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  • American Institute of Physics  (24,457)
  • Oxford University Press  (14,193)
  • American Association for the Advancement of Science  (10,164)
  • American Meteorological Society
  • Annual Reviews
  • 2015-2019
  • 2000-2004  (54,048)
  • 2003  (28,153)
  • 2000  (25,895)
Collection
Keywords
Publisher
Years
  • 2015-2019
  • 2000-2004  (54,048)
Year
  • 1
    Unknown
    Thinking it through : an introduction to contemporary philosophy (2003)
    Oxford ; New York : Oxford University Press
    Details
    Keywords: Philosophy, Introductions.
    Notes: Mind -- Knowledge -- Language -- Science -- Morality -- Politics -- Law -- Metaphysics -- Philosophy
    Pages: xviii, 412 p.
    ISBN: 0-19-518393-2
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=120898
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  • 2
    Unknown
    Handbook of affective sciences : Affective sciences (2003)
    Oxford ; New York : Oxford University Press
    Series in affective science  
    Details
    Keywords: Affect (Psychology) ; Electronic books ; Emotions
    Pages: xvii, 1199 p.
    ISBN: 0-19-530205-2
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=129691
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  • 3
    Unknown
    Encounters with God : an approach to the theology of Jonathan Edwards (2000)
    New York : Oxford University Press
    Religion in America series  
    Details
    Keywords: Edwards, Jonathan,, 1703-1758.
    Pages: xii, 194 p.
    ISBN: 0-585-30895-0
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=23547
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  • 4
    Unknown
    Understanding truth (2000)
    New York : Oxford University Press
    Details
    Keywords: Truth.
    Pages: ix, 268 p.
    ISBN: 0-585-32455-7
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=23592
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  • 5
    Unknown
    American Lazarus : religion and the rise of African-American and native American literatures (2003)
    Oxford ; New York : Oxford University Press
    Details
    Keywords: Occom, Samson,, 1723-1792. ; African Americans in literature. ; African Americans, Intellectual life. ; American literature, African American authors, History and criticism. ; American literature, Indian authors, History and criticism. ; American literature, 1783-1850, History and criticism. ; American literature, Colonial period, ca. 1600-1775, History and criticism. ; American literature, Revolution, 1775-1783, History and criticism. ; Christian literature, American, History and criticism. ; Christianity and literature, United States, History, 18th century. ; Hymns, English, United States, History and criticism. ; Indians in literature. ; Indians of North America, Intellectual life.
    Pages: vi, 255 p.
    ISBN: 0-19-518567-6
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=92702
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  • 6
    Unknown
    Welfare as we knew it : a political history of the American welfare state (2000)
    New York : Oxford University Press
    Details
    Keywords: United States, Social policy. ; Public welfare, United States, History.
    Pages: 210 p.
    ISBN: 0-585-35667-X
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=53587
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  • 7
    Unknown
    The Oxford dictionary of saints (2000)
    New York : Oxford University Press
    Oxford paperback reference  
    Details
    Keywords: Christian saints, Biography, Dictionaries. ; Christian saints, Great Britain, Biography, Dictionaries. ; Christian saints, Ireland, Biography, Dictionaries. ; Saints chrétiens, Biographies, Dictionnaires anglais. ; Saints chrétiens, Grande-Bretagne, Biographies, Dictionnaires anglais. ; Saints chrétiens, Irlande, Biographies, Dictionnaires anglais.
    Pages: xxv, 547 p.
    Edition: 4th ed
    ISBN: 0-585-11034-4
    URL: http://www.netlibrary.com/urlapi.asp?action=summary&v=1&bookid=12301
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  • 8
    Unknown
    Evangelicals and science in historical perspective (2000)
    New York : Oxford University Press
    Religion in America series  
    Details
    Keywords: Evangelicalism, History. ; Religion and science, History.
    Notes: The history of science and religion : some evangelical dimensions / John Hedley Brooke -- The Puritan thesis revisited / John Morgan -- Christianity and early modern science : the Foster thesis reconsidered / Edward B. Davis -- Science, theology, and society : from Cotton Mather to William Jennings Bryan / Mark A. Noll -- Science and evangelical theology in Britain from Wesley to Orr / David W. Bebbington -- Science, natural theology, and evangelicalism in early nineteenth-century Scotland : Thomas Chalmers and the Evidence controversy / Jonathan R. Topham -- Scriptural geology in America / Rodney L. Stiling -- Situating evangelical responses to evolution / David N. Livingstone -- Telling tales : evangelicals and the Darwin legend / James Moore -- Creating creationism : meanings and uses since the age of Agassiz / Ronald L. Numbers -- A sign for an unbelieving age : evangelicals and the search for Noah's ark / Larry Eskridge -- "The science of duty" : moral philosophy and the epistemology of science in nineteenth-century America / Allen C. Guelzo -- Toward a Christian social science in Canada, 1890-1930 / Michael Gauvreau and Nancy Christie -- Evangelicals, Biblical scholarship, and the politics of the modern American academy / D.G. Hart -- The meaning of science for Christians : a new dialogue on Olympus / George Marsden
    Pages: vi, 351 p.
    ISBN: 0-585-18275-2
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=23620
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  • 9
    Unknown
    When information came of age : technologies of knowledge in the age of reason and revolution, 1700-1850 (2000)
    Oxford ; New York : Oxford University Press
    Details
    Keywords: Europe, Intellectual life, 18th century. ; Europe, Intellectual life, 19th century. ; Europe, Vie intellectuelle, 18e siècle. ; Europe, Vie intellectuelle, 19e siècle. ; Enlightenment. ; Information resources, Europe, History, 18th century. ; Information resources, Europe, History, 19th century. ; Learning and scholarship, Europe, History, 18th century. ; Learning and scholarship, Europe, History, 19th century. ; Savoir et érudition, Europe, Histoire, 18e siècle. ; Savoir et érudition, Europe, Histoire, 19e siècle. ; Siècle des lumières. ; Sources d'information, Europe, Histoire, 18e siècle. ; Sources d'information, Europe, Histoire, 19e siècle.
    Pages: viii, 246 p.
    ISBN: 0-19-518040-2
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=92690
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  • 10
    Unknown
    Gendarmes and the state in nineteenth-century Europe (2000)
    Oxford ; New York : Oxford University Press
    Details
    Keywords: Police, Europe, Histoire. ; Police, Europe, History. ; Police, Europe, History, 19th century. ; Police, France, Histoire. ; Police, France, History.
    Pages: x, 288 p.
    ISBN: 0-585-48633-6
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=100298
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  • 11
    Unknown
    Englishness identified : manners and character, 1650-1850 (2000)
    Oxford ; New York : Oxford University Press
    Details
    Keywords: Angleterre, Mœurs et coutumes, 17e siècle. ; Angleterre, Mœurs et coutumes, 18e siècle. ; Angleterre, Mœurs et coutumes, 19e siècle. ; England, Social life and customs, 17th century. ; England, Social life and customs, 17th century. ; England, Social life and customs, 18th century. ; England, Social life and customs, 19th century. ; Anglais dans la littérature. ; Anglais, Histoire. ; English literature, History and criticism. ; Littérature anglaise, Histoire et critique. ; National characteristics, English, in literature. ; National characteristics, English, History.
    Notes: Energy -- Candour -- Decency -- Taciturnity -- Reserve -- Eccentricity -- Manners and character
    Pages: x, 389 p.
    ISBN: 0-585-48625-5
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=100309
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  • 12
    Unknown
    The conscious mind : in search of a fundamental theory (2000)
    New York : Oxford University Press
    Philosophy of mind series  
    Details
    Keywords: Consciousness. ; Dualism. ; Mind and body. ; Philosophy of mind.
    Pages: xvii, 414 p.
    ISBN: 0-585-35313-1
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=55770
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  • 13
    Unknown
    American mobbing, 1828-1861 : toward Civil War (2000)
    New York : Oxford University Press
    Details
    Keywords: United States, History, Civil War, 1861-1865, Causes. ; United States, Race relations. ; United States, Social conditions, To 1865. ; Antislavery movements, United States, History, 19th century. ; Riots, United States, History, 19th century. ; Slavery, Government policy, United States. ; Violence, United States, History, 19th century.
    Pages: xx, 372 p.
    ISBN: 0-19-530397-0
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=120981
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  • 14
    Unknown
    The changing shape of English nonconformity, 1825-1925 (2000)
    New York, N.Y : Oxford University Press
    Details
    Keywords: Dissenters, Religious, England, History, 19th century. ; Dissenters, Religious, England, History, 20th century. ; Dissidents (Religion), Angleterre, Histoire, 19e siècle. ; Dissidents (Religion), Angleterre, Histoire, 20e siècle. ; Theology, Study and teaching, England, History, 19th century. ; Theology, Study and teaching, England, History, 20th century. ; Théologie, Étude et enseignement, Angleterre, Histoire, 19e siècle. ; Théologie, Étude et enseignement, Angleterre, Histoire, 20e siècle.
    Pages: 248 p.
    ISBN: 0-585-16245-X
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=23559
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  • 15
    Unknown
    Charles Dickens in cyberspace : the afterlife of the nineteenth century in postmodern culture (2003)
    New York : Oxford University Press
    Details
    Keywords: Great Britain, Civilization, 19th century. ; United States, Civilization, British influences. ; United States, Civilization, 20th century. ; Dickens, Charles,, 1812-1870, Appreciation, United States. ; Criticism, United States, History, 20th century. ; English literature, Appreciation, United States. ; English literature, 19th century, History and criticism, Theory, etc. ; Literature and science, Great Britain. ; Literature and science, United States. ; Postmodernism (Literature), United States. ; Romanticism, Great Britain.
    Pages: x, 270 p.
    ISBN: 0-19-518078-X
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=92722
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  • 16
    Unknown
    The Gospel according to John : a literary and theological commentary (2000)
    New York : Oxford University Press
    Details
    Keywords: Bible., N.T., John. ; Bible., N.T., John, Commentaries.
    Pages: xiii, 625 p.
    Edition: Pbk. rpt. ed., 1997
    ISBN: 0-585-27829-6
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=23535
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  • 17
    Unknown
    Minds and bodies : philosophers and their ideas (2000)
    New York, N.Y : Oxford University Press
    Philosophy of mind series  
    Details
    Keywords: Ethics, Book reviews. ; Mind and body, Book reviews. ; Philosophy of mind, Book reviews.
    Pages: viii, 264 p.
    ISBN: 0-585-16169-0
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=23637
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  • 18
    Unknown
    Warranted Christian belief (2000)
    New York : Oxford University Press
    Details
    Keywords: Apologetics. ; Christianity, Philosophy. ; Faith and reason, Christianity.
    Pages: xx, 508 p.
    ISBN: 0-585-35267-4
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=55794
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  • 19
    Unknown
    Mobilizing the information society : strategies for growth and opportunity (2000)
    New York, N.Y : Oxford University Press
    Details
    Keywords: Information society. ; Société informatisée.
    Pages: xxiii, 516 p.
    ISBN: 0-585-35755-2
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=56409
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  • 20
    Unknown
    The quest for reality : subjectivism and the metaphysics of colour (2000)
    New York : Oxford University Press
    Details
    Keywords: Color (Philosophy)
    Pages: xv, 228 p.
    ISBN: 0-585-36474-5
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=55844
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  • 21
    Unknown
    A leap in the dark : the struggle to create the American republic (2003)
    Oxford ; New York : Oxford University Press
    Details
    Keywords: United States, History, 1783-1815. ; United States, History, Colonial period, ca. 1600-1775. ; United States, History, Revolution, 1775-1783.
    Notes: Preface -- 1754-1763 : Join, or die -- 1763-1766 : Loss of respect and affection -- 1766-1770 : To crush the spirit of the colonies -- 1770-1774 : Cause of Boston now is the cause of America -- 1775-1776 : To die freemen rather than to live slaves -- 1776-1777 : Leap into the dark -- 1778-1782 : This wilderness of darkness and dangers -- 1783-1787 : Present paroxysm of our affairs -- 1787-1789 : So much unanimity and good will -- 1790-1793 : Prosperous at home, respectable abroad -- 1793-1796 : Colossus to the Antirepublican party -- 1797-1799 : Game where principles are the stake -- 1799-1801 : Gigg is up -- 1801 : Age of revolution and reformation
    Pages: xv, 558 p.
    ISBN: 0-19-518418-1
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=120918
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  • 22
    Unknown
    Thought experiments (2000)
    New York : Oxford University Press
    Details
    Keywords: Philosophy and science. ; Thought experiments.
    Pages: xii, 318 p.
    Edition: [Pbk. reprint 1998]
    ISBN: 0-585-16074-0
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=23526
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  • 23
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    Organizational participation : myth and reality (2000)
    Oxford ; New York : Oxford University Press
    Details
    Keywords: Industrial relations. ; Organizational behavior. ; Organizational sociology.
    Pages: x, 294 p.
    ISBN: 0-585-36603-9
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=56038
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  • 24
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    The American dream : a short history of an idea that shaped a nation (2003)
    Oxford [England] ; New York : Oxford University Press
    Details
    Keywords: United States, Civilization, Philosophy. ; United States, Politics and government, Philosophy. ; National characteristics, American. ; Social values, United States.
    Notes: Introduction: A dream country -- Dream of the good life (I) : the Puritan enterprise -- Dream charter : The declaration of independence -- Dream of the good life (II) : upward mobility -- King of America : the dream of equality -- Detached houses : the dream of home ownership -- Dream of the good life (III) : the coast -- Conclusion: Extending the dream
    Pages: x, 214 p.
    ISBN: 0-19-530398-9
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=129263
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  • 25
    Unknown
    Feminism and history : Feminism & history (2000)
    New York : Oxford University Press
    Oxford readings in feminism  
    Details
    Keywords: Feminist theory. ; Women, History.
    Notes: Does a sex have a history? /Denise Riley --The dialects of Black womanhood /Bonnie Thornton Dill --Theorizing woman:Funu, Guojia, Jiating (Chinese women, Chinese state, Chinese family) /Tani Barlow --'Women's history' in transition: the European case /Natalie Zemon Davis --The traffic in women: notes on the 'political economy' of sex /Gayle Rubin --Gender: a useful category of historical analysis /Joan Wallach Scott --African-American women's history and the metalanguge of race /Evelyn Brooks Higginbotham --Carnal knowledge.
    Pages: ix, 611 p.
    ISBN: 0-585-15703-0
    URL: http://www.netlibrary.com/urlapi.asp?action=summary&v=1&bookid=12418
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  • 26
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    New directions in American religious history (2000)
    New York : Oxford University Press
    Details
    Keywords: United States, Church history, Congresses. ; Christianity, United States, Congresses.
    Pages: ix, 502 p.
    ISBN: 0-585-30487-4
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=23593
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  • 27
    Unknown
    Feminism and science : Feminism & science (2000)
    Oxford : Oxford University Press
    Oxford readings in feminism  
    Details
    Keywords: Feminist theory. ; Science, Philosophy. ; Science, Social aspects. ; Women in science.
    Pages: vii, 289 p.
    ISBN: 0-585-12065-X
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=12414
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  • 28
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    The Oxford companion to philosophy (2000)
    Oxford : Oxford University Press
    Details
    Keywords: Philosophie, Encyclopédies. ; Philosophy, Encyclopedias.
    Pages: xviii, 1009 p.
    ISBN: 0-585-18263-9
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=22941
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  • 29
    Unknown
    There are no slaves in France : the political culture of race and slavery in the Ancien ReÌgime (2000)
    New York : Oxford University Press
    Details
    Keywords: France, Race relations, History, 18th century. ; Blacks, Legal status, laws, etc., France, History, 18th century. ; Political culture, France, History, 18th century. ; Racism, France, History, 18th century.
    Pages: x, 210 p.
    ISBN: 0-585-32788-2
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=53439
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  • 30
    Unknown
    Bowing to necessities : a history of manners in America, 1620-1860 (2000)
    New York : Oxford University Press
    Details
    Keywords: Etiquette, United States, History.
    Notes: Part I -- Hierarchy: manners in a vertical social order, 1620-1740.Manners for gentlemenManners over minorsManners maketh menPart II --Revolution: an opening of possibilities, 1740-1820.Middle class risingYouth risingWomen risingPart III -- Resolution: manners for democrats, 1820-1860.Manners for the middle classManners for adultsLadies first?
    Pages: x, 310 p.
    ISBN: 0-19-530339-3
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=129794
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  • 31
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    The Oxford dictionary of the Jewish religion (2000)
    New York : Oxford University Press
    Details
    Keywords: Judaism, Dictionaries.
    Pages: xviii, 764 p.
    ISBN: 0-585-38345-6
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=53320
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  • 32
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    The Oxford dictionary of philosophy : Dictionary of philosophy (2000)
    New York : Oxford University Press
    Oxford paperback reference  
    Details
    Keywords: Philosophie, Dictionnaires anglais. ; Philosophy, Dictionaries.
    Pages: ix, 418 p.
    ISBN: 0-585-11072-7
    URL: http://www.netlibrary.com/urlapi.asp?action=summary&v=1&bookid=12313
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  • 33
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    Susanna Wesley : the complete writings (2000)
    New York : Oxford University Press
    Details
    Keywords: Wesley, Susanna Annesley,, 1669-1742. ; Wesley, Susanna Annesley,, 1670-1742. ; Anglicans, England, Biography.
    Pages: xiv, 504 p.
    ISBN: 0-585-24572-X
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=23631
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  • 34
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    The crime in mind : criminal responsibility and the Victorian novel (2003)
    New York : Oxford University Press
    Details
    Keywords: Crime in literature. ; Criminal liability in literature. ; Criminals in literature. ; English fiction, 19th century, History and criticism. ; Law and literature, History, 19th century. ; Legal stories, English, History and criticism. ; Responsibility in literature.
    Notes: Organizing crime : conduct and character in Oliver Twist : prologue to George Eliot's crimes -- "To fix our minds on that consequence" : minding consequences in Adam Bede and Felix Holt -- Middlemarch, Daniel Deronda, and the crime in mind -- James Fitzjames Stephen and the responsibilities of narrative -- Modern responsibilities
    Pages: viii, 275 p.
    ISBN: 0-19-518524-2
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=121487
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  • 35
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    Defending Ireland : the Irish state and its enemies since 1922 (2000)
    Oxford : Oxford University Press
    Details
    Keywords: Ireland, Defenses, History, 20th century. ; Ireland, Foreign relations, 1922- ; Ireland, Military policy, History, 20th century. ; Ireland, Politics and government, 1922- ; National security, Ireland, History, 20th century.
    Pages: 382 p.
    ISBN: 0-585-48615-8
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=100313
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  • 36
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    The Great War and the language of modernism (2003)
    New York : Oxford University Press
    Details
    Keywords: Eliot, T. S., (Thomas Stearns),, 1888-1965, Views on war. ; Pound, Ezra,, 1885-1972, Views on war. ; Woolf, Virginia,, 1882-1941, Views on war. ; American poetry, 20th century, History and criticism. ; Americans, Great Britain, History, 20th century. ; Modernism (Literature), Great Britain. ; Modernism (Literature), United States. ; World War, 1914-1918, Great Britain, Literature and the war.
    Pages: xiii, 395 p.
    ISBN: 0-19-518055-0
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=92703
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  • 37
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    Consciousness lost and found : a neuropsychological exploration (2000)
    Oxford : Oxford University Press
    Details
    Keywords: Consciousness. ; Neuropsychology.
    Pages: 272 p.
    ISBN: 0-585-24486-3
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=27427
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  • 38
    Electronic Resource
    Electronic Resource
    STRUCTURE AND FUNCTION OF LIPID-DNA COMPLEXES FOR GENE DELIVERY (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 29 (2000), S. 27-47 
    Details
    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract Owing to the rapid development of in vivo applications for non-viral gene delivery vectors, it is necessary to have a better understanding of how the structure-activity relationships of these lipid-DNA complexes are affected by their environment. Indeed, research in gene therapy first focused on in vitro cell culture studies to determine the mechanisms involved in the delivery of DNA into the cell. New biophysical techniques such as electron microscopy and X-ray diffraction have been developed to discern the structure of the lipid-DNA complex. However, further studies have revealed discrepancies between optimal lipid-DNA formulations for in vitro transfection and for in vivo administration of these vectors. Furthermore, some immune stimulatory effects have been associated with in vivo lipid-DNA administration. This review summarizes the current state of knowledge on in vitro and in vivo lipid-DNA complex transfections. New prospects of vectors for in vivo gene transfer are also discussed.
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    URL: http://dx.doi.org/10.1146/annurev.biophys.29.1.27
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    GCN5-RELATED N-ACETYLTRANSFERASES: A Structural Overview (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 29 (2000), S. 81-103 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract Hundreds of acetyltransferases exist. All use a common acetyl donor-acetyl coenzyme A-and each exhibits remarkable specificity for acetyl acceptors, which include small molecules and proteins. Analysis of the primary sequences of these enzymes indicates that they can be sorted into several superfamilies. This review covers the three-dimensional structures of members of one of these superfamilies, now referred to in the literature as the GCN5-related N-acetyltransferases (GNAT), reflecting the importance of one functional category, the histone acetyltransferases. Despite the diversity of substrate specificities, members of the GNAT superfamily demonstrate remarkable similarity in protein topology and mode of acetyl coenzyme A binding, likely reflecting a conserved catalytic mechanism.
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    SIGNALING AND SUBCELLULAR TARGETING BY MEMBRANE-BINDING DOMAINS1 (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 29 (2000), S. 49-79 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract Protein kinase C homology-1 and -2, FYVE, and pleckstrin homology domains are ubiquitous in eukaryotic signal transduction and membrane-trafficking proteins. These domains regulate subcellular localization and protein function by binding to lipid ligands embedded in cell membranes. Structural and biochemical analysis of these domains has shown that their molecular mechanisms of membrane binding depend on a combination of specific and nonspecific interactions with membrane lipids. In vivo studies of green fluorescent protein fusions have highlighted the key roles of these domains in regulating protein localization to plasma and internal membranes in cells.
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    MEASURING THE FORCES THAT CONTROL PROTEIN INTERACTIONS (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 29 (2000), S. 1-26 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract Although the force fields and interaction energies that control protein behavior can be inferred indirectly from equilibrium and kinetic measurements, recent developments have made it possible to quantify directly (a) the ranges, magnitudes, and time dependence of the interaction energies and forces between biological materials; (b) the mechanical properties of isolated proteins; and (c) the strength of single receptor-ligand bonds. This review describes recent results obtained by using the atomic force microscope, optical tweezers, the surface force apparatus, and micropipette aspiration to quantify short-range protein-ligand interactions and the long-range, nonspecific forces that together control protein behavior. The examples presented illustrate the power of force measurements to quantify directly the force fields and energies that control protein behavior.
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    DNA RECOGNITION BY Cys2His2 ZINC FINGER PROTEINS (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 29 (2000), S. 183-212 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract Cys2His2 zinc fingers are one of the most common DNA-binding motifs found in eukaryotic transcription factors. These proteins typically contain several fingers that make tandem contacts along the DNA. Each finger has a conserved betabetaalpha structure, and amino acids on the surface of the alpha-helix contact bases in the major groove. This simple, modular structure of zinc finger proteins, and the wide variety of DNA sequences they can recognize, make them an attractive framework for attempts to design novel DNA-binding proteins. Several studies have selected fingers with new specificities, and there clearly are recurring patterns in the observed side chain-base interactions. However, the structural details of recognition are intricate enough that there are no general rules (a "recognition code") that would allow the design of an optimal protein for any desired target site. Construction of multifinger proteins is also complicated by interactions between neighboring fingers and the effect of the intervening linker. This review analyzes DNA recognition by Cys2His2 zinc fingers and summarizes progress in generating proteins with novel specificities from fingers selected by phage display.
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    FAST KINETICS AND MECHANISMS IN PROTEIN FOLDING1 (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 29 (2000), S. 327-359 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract This review describes how kinetic experiments using techniques with dramatically improved time resolution have contributed to understanding mechanisms in protein folding. Optical triggering with nanosecond laser pulses has made it possible to study the fastest-folding proteins as well as fundamental processes in folding for the first time. These include formation of alpha-helices, beta-sheets, and contacts between residues distant in sequence, as well as overall collapse of the polypeptide chain. Improvements in the time resolution of mixing experiments and the use of dynamic nuclear magnetic resonance methods have also allowed kinetic studies of proteins that fold too fast (〉 103 s-1) to be observed by conventional methods. Simple statistical mechanical models have been extremely useful in interpreting the experimental results. One of the surprises is that models originally developed for explaining the fast kinetics of secondary structure formation in isolated peptides are also successful in calculating folding rates of single domain proteins from their native three-dimensional structure.
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    A DECADE OF CLC CHLORIDE CHANNELS: Structure, Mechanism, and Many Unsettled Questions (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 29 (2000), S. 411-438 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract ClC-type chloride channels are ubiquitous throughout the biological world. Expressed in nearly every cell type, these proteins have a host of biological functions. With nine distinct homologues known in eukaryotes, the ClCs represent the only molecularly defined family of chloride channels. ClC channels exhibit features of molecular architecture and gating mechanisms unprecedented in other types of ion channels. They form two-pore homodimers, and their voltage-dependence arises not from charged residues in the protein, but rather via coupling of gating to the movement of chloride ions within the pore. Because the functional characteristics of only a few ClC channels have been studied in detail, we are still learning which properties are general to the whole family. New approaches, including structural analyses, will be crucial to an understanding of ClC architecture and function.
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    DESIGNED SEQUENCE-SPECIFIC MINOR GROOVE LIGANDS (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 29 (2000), S. 439-461 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract In the past decade, a general design for sequence-specific minor groove ligands has evolved, based on the natural products distamycin and netropsin. By utilizing a basic set of design rules for connecting pyrrole, imidazole, and hydroxypyrrole modules, new ligands can be prepared to target almost any sequence of interest with both high affinity and specificity. In this review we present the design rules with a brief history of how they evolved. The structural basis for sequence-specific recognition is explained, together with developments that allow linking of recognition modules that enable targeting of long DNA sequences. Examples of the affinity and specificity that can be achieved with a number of variations on the basic design are given. Recently these molecules have been used to compete with proteins both in vitro and in vivo, and a brief description of the experimental results are given.
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    OPTICAL SINGLE TRANSPORTER RECORDING: Transport Kinetics in Microarrays of Membrane Patches (2003)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 32 (2003), S. 47-67 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract Optical single transporter recording (OSTR) is an emerging technique for the fluorescence microscopic measurement of transport kinetics in membrane patches. Membranes are attached to transparent microarrays of cylindrical test compartments (TCs) ~0.1-100 mum in diameter and ~10-100 mum in depth. Transport across membrane patches that may contain single transporters or transporter populations is recorded by confocal microscopy. By these means transport of proteins through single nuclear pore complexes has been recorded at rates of 〈1 translocation/s. In addition to the high sensitivity in terms of measurable transport rates OSTR features unprecedented spatial selectivity and parallel processing. This article reviews the conceptual basis of OSTR and its realization. Applications to nuclear transport are summarized. The further development of OSTR is discussed and its extension to a diversity of transporters, including translocases and ATP-binding cassette (ABC) pumps, projected.
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    STRUCTURE AND FUNCTION OF NATURAL KILLER CELL SURFACE RECEPTORS* (2003)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 32 (2003), S. 93-114 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract Since mid-1990, with cloning and identification of several families of natural killer (NK) receptors, research on NK cells began to receive appreciable attention. Determination of structures of NK cell surface receptors and their ligand complexes led to a fast growth in our understanding of the activation and ligand recognition by these receptors as well as their function in innate immunity. Functionally, NK cell surface receptors are divided into two groups, the inhibitory and the activating receptors. Structurally, they belong to either the immunoglobulin (Ig)-like receptor superfamily or the C-type lectin-like receptor (CTLR) superfamily. Their ligands are either members of class I major histocompatibility complexes (MHC) or homologs of class I MHC molecules. The inhibitory form of NK receptors provides the protective immunity through recognizing class I MHC molecules with self-peptides on healthy host cells. The activating, or the noninhibitory, NK receptors mediate the killing of tumor or virally infected cells through their specific ligand recognition. The structures of activating and inhibitory NK cell surface receptors and their complexes with the ligands determined to date, including killer immunoglobulin-like receptors (KIRs) and their complexes with HLA molecules, CD94, Ly49A, and its complex with H-2Dd, and NKG2D receptors and their complexes with class I MHC homologs, are reviewed here.
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    THE POWER AND PROSPECTS OF FLUORESCENCE MICROSCOPIES AND SPECTROSCOPIES (2003)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 32 (2003), S. 161-182 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract Recent years have witnessed a renaissance of fluorescence microscopy techniques and applications, from live-animal multiphoton confocal microscopy to single-molecule fluorescence spectroscopy and imaging in living cells. These achievements have been made possible not so much because of improvements in microscope design, but rather because of development of new detectors, accessible continuous wave and pulsed laser sources, sophisticated multiparameter analysis on one hand, and the development of new probes and labeling chemistries on the other. This review tracks the lineage of ideas and the evolution of thinking that have led to the actual developments, and presents a comprehensive overview of the field, with emphasis put on our laboratory's interest in single-molecule microscopy and spectroscopy.
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    NEW INSIGHT INTO SITE-SPECIFIC RECOMBINATION FROM FLP RECOMBINASE-DNA STRUCTURES (2003)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 32 (2003), S. 135-159 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract The lamba integrase, or tyrosine-based family of site-specific recombinases, plays an important role in a variety of biological processes by inserting, excising, and inverting DNA segments. Flp, encoded by the yeast 2-mum plasmid, is the best-characterized eukaryotic member of this family and is responsible for maintaining the copy number of this plasmid. Over the past several years, structural and biochemical studies have shed light on the details of a common catalytic scheme utilized by these enzymes with interesting variations under different biological contexts. The emergence of new Flp structures and solution data provides insights not only into its unique mechanism of active site assembly and activity regulation but also into the specific contributions of certain protein residues to catalysis.
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    X-RAY CRYSTALLOGRAPHIC ANALYSIS OF LIPID-PROTEIN INTERACTIONS IN THE BACTERIORHODOPSIN PURPLE MEMBRANE* (2003)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 32 (2003), S. 285-310 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract The past decade has witnessed increasingly detailed insights into the structural mechanism of the bacteriorhodopsin photocycle. Concurrently, there has been much progress within our knowledge pertaining to the lipids of the purple membrane, including the discovery of new lipids and the overall effort to localize and identify each lipid within the purple membrane. Therefore, there is a need to classify this information to generalize the findings. We discuss the properties and roles of haloarchaeal lipids and present the structural data as individual case studies. Lipid-protein interactions are discussed in the context of structure-function relationships. A brief discussion of the possibility that bacteriorhodopsin functions as a light-driven inward hydroxide pump rather than an outward proton pump is also presented.
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    URL: http://dx.doi.org/10.1146/annurev.biophys.32.110601.142516
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    THE CRYSTALLOGRAPHIC MODEL OF RHODOPSIN AND ITS USE IN STUDIES OF OTHER G PROTEIN-COUPLED RECEPTORS (2003)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 32 (2003), S. 375-397 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract G protein-coupled receptors (GPCRs) are integral membrane proteins that respond to environmental signals and initiate signal transduction pathways activating cellular processes. Rhodopsin is a GPCR found in rod cells in retina where it functions as a photopigment. Its molecular structure is known from cryo-electron microscopic and X-ray crystallographic studies, and this has reshaped many structure/function questions important in vision science. In addition, this first GPCR structure has provided a structural template for studies of other GPCRs, including many known drug targets. After presenting an overview of the major structural elements of rhodopsin, recent literature covering the use of the rhodopsin structure in analyzing other GPCRs will be summarized. Use of the rhodopsin structural model to understand the structure and function of other GPCRs provides strong evidence validating the structural model.
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    PROTEOME ANALYSIS BY MASS SPECTROMETRY* (2003)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 32 (2003), S. 399-424 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract The coupling of high-performance mass spectrometry instrumentation with highly efficient chromatographic and electrophoretic separations has enabled rapid qualitative and quantitative analysis of thousands of proteins from minute samples of biological materials. Here, we review recent progress in the development and application of mass spectrometry-based techniques for the qualitative and quantitative analysis of global proteome samples derived from whole cells, tissues, or organisms. Techniques such as multidimensional peptide and protein separations coupled with mass spectrometry, accurate mass measurement of peptides from global proteome digests, and mass spectrometric characterization of intact proteins hold great promise for characterization of highly complex protein mixtures. Advances in chemical tagging and isotope labeling techniques have enabled quantitative analysis of proteomes, and highly specific isolation strategies have been developed aimed at selective analysis of posttranslationally modified proteins.
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    NEW ELECTROCATALYSTS BY COMBINATORIAL METHODS (2003)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Materials Research 33 (2003), S. 557-579 
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    ISSN: 1531-7331
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Combinatorial methods provide a means for accelerating the discovery of fuel cell catalysts. The first example of parallel fuel cell catalysts screening was an indirect method that used fluorescent chemosensors to detect changes in pH in proximity to electrocatalyst spots. Serial direct electrochemical methods have been developed that use voltammetry, chronoamperometry, and scanning electrochemical microscopy. An array fuel cell screens catalysts simultaneously, using high-performance fuel cell components. Heuristic models based on mechanistic and spectroscopic studies provide guidance for library development, and detailed studies of discovered catalysts can help to refine these models. The remaining challenges are the development of high throughput synthetic methods that can enable the use of discovery level and focus level screening. Until these synthetic methods are developed, a greater emphasis should be placed on smaller libraries with design of experiment strategies leveraged with informatics and data mining.
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    NON-FLUORINATED POLYMER MATERIALS FOR PROTON EXCHANGE MEMBRANE FUEL CELLS (2003)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Materials Research 33 (2003), S. 503-555 
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    ISSN: 1531-7331
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The past 10 years have witnessed a tremendous acceleration in research devoted to non-fluorinated polymer membranes, both as competitive alternatives to commercial perfluorosulfonic acid membranes operating in the same temperature range and with the objective of extending the range of operation of polymer fuel cells toward those more generally occupied by phosphoric acid fuel cells. Important requirements are adequate membrane mechanical strength at levels of functionalization (generally sulfonation) and hydration allowing high proton conductivity, and stability in the aggressive environment of a working fuel cell, in particular thermohydrolytic and chemical stability. This review provides an overview of progress made in the development of proton-conducting hydrocarbon and heterocyclic-based polymers for proton exchange and direct methanol fuel cells and describes the various approaches made to polymer modification/synthesis and salient properties of the materials formed, including those relating to proton transport and proton conductivity, e.g., water diffusion and electro-osmotic drag. The microstructure, deduced from small angle X-ray and neutron diffraction measurements of representative non-fluorinated polymers is compared with that of perfluorosulfonic acid membranes. Different degradation mechanisms and aging processes that can result in chemical and morphological alteration are considered, and recent characterization of membrane-electrode assemblies (MEAs) in direct methanol and hydrogen-air (oxygen) fuel cells completes this review of the state of the art. While several types of non-fluorinated polymer membrane have demonstrated lifetimes of 500-4000 h, only a limited number of systems exist that hold promise for long-term operation above 100oC.1
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    A FORTUNATE LIFE IN ASTRONOMY (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Astronomy and Astrophysics 38 (2000), S. 1-33 
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    ISSN: 0066-4146
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Notes: Abstract I have had a very fortunate career in astronomy, benefiting greatly from numerous accidents of fate. I grew up in Cincinnati, Ohio, served in the US Army Air Force in World War II, and had all my further education at the University of Chicago, from PhB in the College to PhD in astronomy and astrophysics. There, as a postdoc at Princeton University, and as a young faculty member at Caltech and Mount Wilson and Palomar Observatories, I had excellent teachers and mentors. I have done research primarily on gaseous nebulae and active galactic nuclei, but also made a few early contributions on stellar interiors and the heating in the outer layers of the Sun. The major part of my scientific career was at the University of Wisconsin and Lick Observatory, but I also had three productive years at the Institute for Advanced Study.
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    X-RAY PROPERTIES OF GROUPS OF GALAXIES (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Astronomy and Astrophysics 38 (2000), S. 289-335 
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    ISSN: 0066-4146
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Notes: Abstract ROSAT observations indicate that approximately half of all nearby groups of galaxies contain spatially extended X-ray emission. The radial extent of the X-ray emission is typically 50-500 h-1100 kpc or approximately 10-50% of the virial radius of the group. Diffuse X-ray emission is generally restricted to groups that contain at least one early-type galaxy. X-ray spectroscopy suggests the emission mechanism is most likely a combination of thermal bremsstrahlung and line emission. This interpretation requires that the entire volume of groups be filled with a hot, low-density gas known as the intragroup medium. ROSAT and ASCA observations indicate that the temperature of the diffuse gas in groups ranges from approximately 0.3 keV to 2 keV. Higher temperature groups tend to follow the correlations found for rich clusters between X-ray luminosity, temperature, and velocity dispersion. However, groups with temperatures below approximately 1 keV appear to fall off the cluster LX-T relationship (and possibly the LX-sigma and sigma-T cluster relationships, although evidence for these latter departures is at the present time not very strong). Deviations from the cluster LX-T relationship are consistent with preheating of the intragroup medium by an early generation of stars and supernovae. There is now considerable evidence that most X-ray groups are real, physical systems and not chance superpositions or large-scale filaments viewed edge-on. Assuming the intragroup gas is in hydrostatic equilibrium, X-ray observations can be used to estimate the masses of individual systems. ROSAT observations indicate that the typical mass of an X-ray group is ~1013 h-1100 M out to the radius to which X-ray emission is currently detected. The observed baryonic masses of groups are a small fraction of the X-ray determined masses, which implies that groups are dominated by dark matter. On scales of the virial radius, the dominant baryonic component in groups is likely the intragroup medium.
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    OBSERVATIONS OF BROWN DWARFS (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Astronomy and Astrophysics 38 (2000), S. 485-519 
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    ISSN: 0066-4146
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Notes: Abstract The brown dwarfs occupy the gap between the least massive star and the most massive planet. They begin as dimly stellar in appearance and experience fusion (of at least deuterium) in their interiors. But they are never able to stabilize their luminosity or temperature and grow ever fainter and cooler with time. For that reason, they can be viewed as a constituent of baryonic "dark matter." Indeed, we currently have a hard time directly seeing an old brown dwarf beyond 100 pc. After 20 years of searching and false starts, the first confirmed brown dwarfs were announced in 1995. This was due to a combination of increased sensitivity, better search strategies, and new means of distinguishing substellar from stellar objects. Since then, a great deal of progress has been made on the observational front. We are now in a position to say a substantial amount about actual brown dwarfs. We have a rough idea of how many of them occur as solitary objects and how many are found in binary systems. We have obtained the first glimpse of atmospheres intermediate in temperature between stars and planets, in which dust formation is a crucial process. This has led to the proposal of the first new spectral classes in several decades and the need for new diagnostics for classification and setting the temperature scale. The first hints on the substellar mass function are in hand, although all current masses depend on models. It appears that numerically, brown dwarfs may well be almost as common as stars (though they appear not to contain a dynamically interesting amount of mass).
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    WINDS FROM HOT STARS (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Astronomy and Astrophysics 38 (2000), S. 613-666 
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    ISSN: 0066-4146
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Notes: Abstract This review deals with the winds from "normal" hot stars such as O-stars, B- and A-supergiants, and Central Stars of Planetary Nebulae with O-type spectra. The advanced diagnostic methods of stellar winds, including an assessment of the accuracy of the determinations of global stellar wind parameters (terminal velocities, mass-loss rates, wind momenta, and energies), are introduced and scaling relations as a function of stellar parameters are provided. Observational results are interpreted in the framework of the stationary, one-dimensional (1-D) theory of line-driven winds. Systematic effects caused by nonhomogeneous structures, time dependence, and deviations from spherical symmetry are discussed. The review finishes with a brief description of the role of stellar winds as extragalactic distance indicators and as tracers of the chemical composition of galaxies at high redshift.
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    Active Control of Sound (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 32 (2000), S. 137-164 
    Details
    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The active control of sound waves has become an extraordinarily large and vigorous area of academic research and technological development. In this paper we describe the physical principles underlying the control of sound and review their application in a wide range of contexts. One scenario involves the control of noise from a primary source by the introduction of secondary sources, and this technique is described for fields in ducts, in free space, in enclosures (with particular reference to aircraft cabins), and for turbomachinery. A second scenario involves the use of the active control of sound to eliminate large-scale oscillations in more complicated flows, in which part of an unstable feedback cycle is mediated via acoustic waves. Successful applications of this idea include the control of combustion instabilities and compressor surge.
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    URL: http://dx.doi.org/10.1146/annurev.fluid.32.1.137
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    Laboratory Studies of Orographic Effects in Rotating and Stratified Flows (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 32 (2000), S. 165-202 
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    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract This article reviews some aspects of the roles that laboratory experiments have played in the study of orographic effects in the Earth's atmosphere and oceans. The review focuses on, but is not restricted to, physical systems for which the effects of both background stratification and rotation are important. In the past, such laboratory studies have been largely decoupled from attempts to make quantitative comparisons with the results of numerical-model studies or observations from field programs. Rather, they have been used mostly in the important task of better understanding the physics of rotating and stratified flows. Furthermore, most laboratory experiments concerned with the effects of orography on either homogeneous or stratified rotating fluids have considered laminar flows, whereas their counterpart flows in the atmosphere and ocean are turbulent. We argue that laboratory investigations are likely to be more useful in addressing critical environmental problems if the studies are more closely allied with numerical-modeling efforts. The latter, in turn, should be tied to field projects, with the overall objective of improving our ability to predict the behavior of natural systems. In this same spirit, we conclude that far more attention should be given to the laboratory simulation of the turbulent characteristics of natural flows. The availability of rapidly developing technology to acquire and analyze laboratory data provides the capability necessary to support the increasingly important roles that laboratory experiments can play in understanding and predicting the behavior of our natural environment.
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    URL: http://dx.doi.org/10.1146/annurev.fluid.32.1.165
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    Capillary Effects on Surface Waves (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 32 (2000), S. 241-274 
    Details
    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract We concentrate on the rich effects that surface tension has on free and forced surface waves for linear, nonlinear, and especially strongly nonlinear waves close to or at breaking or their limiting form. These effects are discussed in the context of standing gravity and gravity-capillary waves, Faraday waves, and parasitic capillary waves. Focus is primarily on post-1989 research. Regarding standing waves, new waveforms and the large effect that small capillarity can have are considered. Faraday waves are discussed principally with regard to viscous effects, hysteresis, and limit cycles; nonlinear waveforms of low mode numbers; contact-line effects and surfactants; breaking and subharmonics; and drop ejection. Pattern formation and chaotic and nonlinear dynamics of Faraday waves are mentioned only briefly. Gravity and gravity-capillary wave generation of parasitic capillaries and dissipation are considered at length. We conclude with our view on the direction of future research in these areas.
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    URL: http://dx.doi.org/10.1146/annurev.fluid.32.1.241
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    Passive Scalars in Turbulent Flows (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 32 (2000), S. 203-240 
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    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Passive scalar behavior is important in turbulent mixing, combustion, and pollution and provides impetus for the study of turbulence itself. The conceptual framework of the subject, strongly influenced by the Kolmogorov cascade phenomenology, is undergoing a drastic reinterpretation as empirical evidence shows that local isotropy, both at the inertial and dissipation scales, is violated. New results of the complex morphology of the scalar field are reviewed, and they are related to the intermittency problem. Recent work on other aspects of passive scalar behavior-its spectrum, probability density function, flux, and variance-is also addressed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.fluid.32.1.203
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    Vapor Explosions (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 32 (2000), S. 573-611 
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    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract A vapor explosion results from the rapid and intense heat transfer that may follow contact between a hot liquid and a cold, more volatile one. Because it can happen during severe-accident sequences of a nuclear power plan, that is, when a large part of the core is molten, vapor explosions have been widely studied. The different sequences of a vapor explosion are presented, including premixing, triggering, propagation, and expansion. Typical experimental results are also analyzed to understand the involved physics. Then the different physics involved in the sequences are addressed, as well as the present experimental program.
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    Flows Induced by Temperature Fields in a Rarefied Gas and their Ghost Effect on the Behavior of a Gas in the Continuum Limit (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 32 (2000), S. 779-811 
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    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract In the framework of the classical gas dynamics, no steady flow is induced in a gas without an external force, such as gravity, by the effect of a temperature field. In a rarefied gas, on the other hand, the temperature field of a gas (often in combination with a solid boundary) plays an important role in inducing a steady flow. In the present article, we introduce various kinds of flows induced by the temperature effect and discuss their physical mechanisms. These flows vanish in the continuum limit (the limit where the mean free path of the gas molecules tends to zero), but it has been found recently that they, strangely, affect the behavior of a gas in this limit. This interesting effect, called a ghost effect, is also discussed.
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    URL: http://dx.doi.org/10.1146/annurev.fluid.32.1.779
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    STANLEY CORRSIN: 1920-1986 (2003)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 35 (2003), S. 1-10 
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    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.fluid.35.101101.161055
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    MECHANISMS ON TRANSVERSE MOTIONS IN TURBULENT WALL FLOWS (2003)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 35 (2003), S. 45-62 
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    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Drag reduction in wall-bounded flows can be achieved by transverse motions imposed by passive means, e.g., riblets, or by external forcing, such as wall oscillation or transverse traveling-wave excitation. In this article, we review possible physical mechanisms responsible for turbulent drag reduction and corresponding near-wall flow modification.
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    URL: http://dx.doi.org/10.1146/annurev.fluid.35.101101.161213
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    AERODYNAMICS OF SMALL VEHICLES (2003)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 35 (2003), S. 89-111 
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    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract In this review we describe the aerodynamic problems that must be addressed in order to design a successful small aerial vehicle. The effects of Reynolds number and aspect ratio (AR) on the design and performance of fixed-wing vehicles are described. The boundary-layer behavior on airfoils is especially important in the design of vehicles in this flight regime. The results of a number of experimental boundary-layer studies, including the influence of laminar separation bubbles, are discussed. Several examples of small unmanned aerial vehicles (UAVs) in this regime are described. Also, a brief survey of analytical models for oscillating and flapping-wing propulsion is presented. These range from the earliest examples where quasi-steady, attached flow is assumed, to those that account for the unsteady shed vortex wake as well as flow separation and aeroelastic behavior of a flapping wing. Experiments that complemented the analysis and led to the design of a successful ornithopter are also described.
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    URL: http://dx.doi.org/10.1146/annurev.fluid.35.101101.161102
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    MIXING EFFICIENCY IN STRATIFIED SHEAR FLOWS (2003)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 35 (2003), S. 135-167 
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    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The issue of the physical mechanism(s) that control the efficiency with which the density field in stably stratified fluid is mixed by turbulent processes has remained enigmatic. Similarly enigmatic has been an explanation of the numerical value of ~0.2, which is observed to characterize this efficiency experimentally. We review recent work on the turbulence transition in stratified parallel flows that demonstrates that this value is not only numerically predictable but also that it is expected to be a nonmonotonic function of the Richardson number that characterizes preturbulent stratification strength. This value of the mixing efficiency appears to be characteristic of the late-time behavior of the turbulent flow that develops after an initially laminar shear flow has undergone the transition to turbulence through an intermediate instability of Kelvin-Helmholtz type.
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    URL: http://dx.doi.org/10.1146/annurev.fluid.35.101101.161144
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    SMALL-SCALE HYDRODYNAMICS IN LAKES (2003)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 35 (2003), S. 373-412 
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    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Recent small-scale turbulence observations allow the mixing regimes in lakes, reservoirs, and other enclosed basins to be categorized into the turbulent surface and bottom boundary layers as well as the comparably quiet interior. The surface layer consists of an energetic wave-affected thin zone at the very top and a law-of-the-wall layer right below, where the classical logarithmic-layer characteristic applies on average. Short-term current and dissipation profiles, however, deviate strongly from any steady state. In contrast, the quasi-steady bottom boundary layer behaves almost perfectly as a logarithmic layer, although periodic seiching modifies the structure in the details. The interior stratified turbulence is extremely weak, even though much of the mechanical energy is contained in baroclinic basin-scale seiching and Kelvin waves or inertial currents (large lakes). The transformation of large-scale motions to turbulence occurs mainly in the bottom boundary and not in the interior, where the local shear remains weak and the Richardson numbers are generally large.
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    URL: http://dx.doi.org/10.1146/annurev.fluid.35.101101.161220
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    FLOW AND DISPERSION IN URBAN AREAS (2003)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 35 (2003), S. 469-496 
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    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Increasing urbanization and concern about sustainability and quality of life issues have produced considerable interest in flow and dispersion in urban areas. We address this subject at four scales: regional, city, neighborhood, and street. The flow is one over and through a complex array of structures. Most of the local fluid mechanical processes are understood; how these combine and what is the most appropriate framework to study and quantify the result is less clear. Extensive and structured experimental databases have been compiled recently in several laboratories. A number of major field experiments in urban areas have been completed very recently and more are planned. These have aided understanding as well as model development and evaluation.
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    URL: http://dx.doi.org/10.1146/annurev.fluid.35.101101.161147
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    BIFURCATING AND BLOOMING JETS (2003)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 35 (2003), S. 295-315 
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    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract It is classically assumed that the far field of a round turbulent jet discharging into quiescent fluid has a unique behavior characterized only by its momentum flux. However, there is now considerable evidence that different discharge conditions at the jet nozzle exit can give rise to very different far-field flows. Perhaps the most striking examples of these are the bifurcating and blooming jets produced by appropriate combinations of controlled axial and circumferential excitations at the nozzle exit. With the right excitations, a jet can be made to divide into two separate jets (bifurcating jet), each of which carries half the axial momentum and spreads in a manner similar to a single jet. Trifurcating jets can also be produced. Other excitations can produce blooming jets, in which the jet explodes into a shower of vortex rings, producing a far-field flow that is quite unlike a normal unexcited jet. Bifurcating and blooming jets exhibit much greater mixing than normal jets, suggesting possible applications in flow control. This article summarizes our work on bifurcating and blooming jets, which began with our discovery of them in the early 1980s and continued through the mid- 1990s. One of us (D.E.P.) continued exploration of flow control using excited jets, first at the McDonnell Douglas Corporation, and more recently at the Georgia Institute of Technology. The key to flow control is the manipulation of the large vortical structures in the near field of the jet. Ultimately this work, and that of others, led to full-scale testing of jet engine exhaust mixing control. There it was shown that the jet temperature downstream of the engine can be very significantly reduced by application of well-designed and easily implemented excitation at the engine discharge, thereby solving problems encountered during ground operations. Related jet control work by other investigators is included in this review.
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    URL: http://dx.doi.org/10.1146/annurev.fluid.35.101101.161128
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    STABILITY AND TRANSITION OF THREE-DIMENSIONAL BOUNDARY LAYERS (2003)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 35 (2003), S. 413-440 
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    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The recent progress in three-dimensional boundary-layer stability and transition is reviewed. The material focuses on the crossflow instability that leads to transition on swept wings and rotating disks. Following a brief overview of instability mechanisms and the crossflow problem, a summary of the important findings of the 1990s is given.
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    URL: http://dx.doi.org/10.1146/annurev.fluid.35.101101.161045
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    DYNAMIC LOCALIZATION OF BACTERIAL AND PLASMID CHROMOSOMES (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 34 (2000), S. 21-59 
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    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Notes: Abstract Plasmid-encoded partition genes determine the dynamic localization of plasmid molecules from the mid-cell position to the 1/4 and 3/4 positions. Similarly, bacterial homologs of the plasmid genes participate in controlling the bidirectional migration of the replication origin (oriC) regions during sporulation and vegetative growth in Bacillus subtilis, but not in Escherichia coli. In E. coli, but not B. subtilis, the chromosomal DNA is fully methylated by DNA adenine methyltransferase. The E. coli SeqA protein, which binds preferentially to hemimethylated nascent DNA strands, exists as discrete foci in vivo. A single SeqA focus, which is a SeqA-hemimethylated DNA cluster, splits into two foci that then abruptly migrate bidirectionally to the 1/4 and 3/4 positions during replication. Replicated oriC copies are linked to each other for a substantial period of generation time, before separating from each other and migrating in opposite directions. The MukFEB complex of E. coli and Smc of B. subtilis appear to participate in the reorganization of bacterial sister chromosomes.
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    URL: http://dx.doi.org/10.1146/annurev.genet.34.1.21
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    POLYGENIC AND MULTIFACTORIAL DISEASE GENE ASSOCIATION IN MAN: Lessons from AIDS1 (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 34 (2000), S. 563-591 
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    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Notes: Abstract In an age when the majority of monogenic human disease genes have been identified, a particular challenge for the coming generation of human geneticists will be resolving complex polygenic and multifactorial diseases. The tools of molecular and population genetic association have much potential as well as peril in uncovering small cryptic genetic effects in disease. We have used a candidate gene approach to identify eight distinct human loci with alleles that in different ways influence the outcome of exposure to HIV-1, the AIDS virus. The successes in these gene hunts have validated the approach and illustrate the strengths and limitations of association analysis in an actual case history. The integration of genetic associations, well-described clinical cohorts, extensive basic research on AIDS pathogenesis, and functional interpretation of gene connections to disease offers a formula for detecting such genes in complex human genetic phenotypes.
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    COMPLEX TRAIT ANALYSIS IN THE MOUSE: The Strengths, The Limitations and The Promise Yet To Come (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 34 (2000), S. 653-686 
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    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Notes: Abstract In 1990, David Baltimore predicted that the 1990s would be the decade of the mouse (1). This certainly proved to be true: The mouse has contributed immensely to biological research through transgenic, embryonic stem cell (ES) knockout, and classical genetic technologies. But its usefulness as a model organism is by no means over; indeed it is still rising to its peak: The mouse as a model mammalian organism still has much to offer. This article reviews use of the mouse to dissect complex genetic traits using quantitative trait analysis, with a particular emphasis on medically important diseases.
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    URL: http://dx.doi.org/10.1146/annurev.genet.34.1.653
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    THE SOS RESPONSE: Recent Insights into umuDC-Dependent Mutagenesis and DNA Damage Tolerance (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 34 (2000), S. 479-497 
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    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Notes: Abstract Be they prokaryotic or eukaryotic, organisms are exposed to a multitude of deoxyribonucleic acid (DNA) damaging agents ranging from ultraviolet (UV) light to fungal metabolites, like Aflatoxin B1. Furthermore, DNA damaging agents, such as reactive oxygen species, can be produced by cells themselves as metabolic byproducts and intermediates. Together, these agents pose a constant threat to an organism's genome. As a result, organisms have evolved a number of vitally important mechanisms to repair DNA damage in a high fidelity manner. They have also evolved systems (cell cycle checkpoints) that delay the resumption of the cell cycle after DNA damage to allow more time for these accurate processes to occur. If a cell cannot repair DNA damage accurately, a mutagenic event may occur. Most bacteria, including Escherichia coli, have evolved a coordinated response to these challenges to the integrity of their genomes. In E. coli, this inducible system is termed the SOS response, and it controls both accurate and potentially mutagenic DNA repair functions [reviewed comprehensively in (25) and also in (78, 94)]. Recent advances have focused attention on the umuD+C+-dependent, translesion DNA synthesis (TLS) process that is responsible for SOS mutagenesis (70, 86). Here we discuss the SOS response of E. coli and concentrate in particular on the roles of the umuD+C+ gene products in promoting cell survival after DNA damage via TLS and a primitive DNA damage checkpoint.
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    Population Genetics and Evolution of Genomic Imprinting (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 34 (2000), S. 457-477 
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    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Notes: Abstract At a small number of mammalian loci, only one of the two copies of a gene is expressed. Just which copy is expressed depends on the sex of the parent from which that copy was inherited. Such genes are said to be imprinted. The functional haploidy implied by imprinting has a number of population genetic consequences. Moreover, since diploidy is widely believed to be advantageous, the evolution of this non-Mendelian form of expression requires an explanation. Here I examine some of the theoretical and mathematical models investigating these two aspects of imprinting. For instance, the dynamics and equilibrium properties of many models of natural selection at imprinted loci are formally equivalent to models without imprinting. And different approaches to modeling the problem of the evolution of imprinting reveal the weakness of several of the apparent predictions of various verbal hypotheses about why imprinting has evolved.
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    URL: http://dx.doi.org/10.1146/annurev.genet.34.1.457
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    GENETIC MODELS OF OBESITY AND ENERGY BALANCE IN THE MOUSE (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 34 (2000), S. 687-745 
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    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Notes: Abstract Obesity is a health problem of epidemic proportions in the industrialized world. The cloning and characterization of the genes for the five naturally occurring monogenic obesity syndromes in the mouse have led to major breakthroughs in understanding the physiology of energy balance and the contribution of genetics to obesity in the human population. However, the regulation of energy balance is an extremely complex process, and it is quickly becoming clear that hundreds of genes are involved. In this article, we review the naturally occurring monogenic and polygenic obese mouse strains, as well as the large number of transgenic and knockout mouse models currently available for the study of obesity and energy balance.
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    FUNCTIONS AND MECHANISMS OF RNA EDITING (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Genetics 34 (2000), S. 499-531 
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    ISSN: 0066-4197
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Notes: Abstract RNA editing can be broadly defined as any site-specific alteration in an RNA sequence that could have been copied from the template, excluding changes due to processes such as RNA splicing and polyadenylation. Changes in gene expression attributed to editing have been described in organisms from unicellular protozoa to man, and can affect the mRNAs, tRNAs, and rRNAs present in all cellular compartments. These sequence revisions, which include both the insertion and deletion of nucleotides, and the conversion of one base to another, involve a wide range of largely unrelated mechanisms. Recent advances in the development of in vitro editing and transgenic systems for these varied modifications have provided a better understanding of similarities and differences between the biochemical strategies, regulatory sequences, and cellular factors responsible for such RNA processing events.
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    URL: http://dx.doi.org/10.1146/annurev.genet.34.1.499
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    ELECTROKINETICALLY CONTROLLED MICROFLUIDIC ANALYSIS SYSTEMS (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 29 (2000), S. 155-181 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract Electrokinetic forces are emerging as a powerful means to drive microfluidic systems with flow channel cross-sectional dimensions in the tens of micrometers and flow rates in the nanoliter per second range. These systems provide many advantages such as improved analysis speed, improved reproducibility, greatly reduced reagent consumption, and the ability to perform multiple operations in an integrated fashion. Planar microfabrication methods are used to make these analysis chips in materials such as glass or polymers. Many applications of this technology have been demonstrated, such as DNA separations, enzyme assays, immunoassays, and PCR amplification integrated with microfluidic assays. Further development of this technology is expected to yield higher levels of functionality of sample throughput on a single microfluidic analysis chip.
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    URL: http://dx.doi.org/10.1146/annurev.biophys.29.1.155
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    STRUCTURAL SYMMETRY AND PROTEIN FUNCTION (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 29 (2000), S. 105-153 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract The majority of soluble and membrane-bound proteins in modern cells are symmetrical oligomeric complexes with two or more subunits. The evolutionary selection of symmetrical oligomeric complexes is driven by functional, genetic, and physicochemical needs. Large proteins are selected for specific morphological functions, such as formation of rings, containers, and filaments, and for cooperative functions, such as allosteric regulation and multivalent binding. Large proteins are also more stable against denaturation and have a reduced surface area exposed to solvent when compared with many individual, smaller proteins. Large proteins are constructed as oligomers for reasons of error control in synthesis, coding efficiency, and regulation of assembly. Symmetrical oligomers are favored because of stability and finite control of assembly. Several functions limit symmetry, such as interaction with DNA or membranes, and directional motion. Symmetry is broken or modified in many forms: quasisymmetry, in which identical subunits adopt similar but different conformations; pleomorphism, in which identical subunits form different complexes; pseudosymmetry, in which different molecules form approximately symmetrical complexes; and symmetry mismatch, in which oligomers of different symmetries interact along their respective symmetry axes. Asymmetry is also observed at several levels. Nearly all complexes show local asymmetry at the level of side chain conformation. Several complexes have reciprocating mechanisms in which the complex is asymmetric, but, over time, all subunits cycle through the same set of conformations. Global asymmetry is only rarely observed. Evolution of oligomeric complexes may favor the formation of dimers over complexes with higher cyclic symmetry, through a mechanism of prepositioned pairs of interacting residues. However, examples have been found for all of the crystallographic point groups, demonstrating that functional need can drive the evolution of any symmetry.
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    URL: http://dx.doi.org/10.1146/annurev.biophys.29.1.105
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    QUANTITATIVE CHEMICAL ANALYSIS OF SINGLE CELLS1 (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 29 (2000), S. 239-263 
    Details
    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract A fundamental perspective can be achieved by targeting single cells for analysis with the goal of deconvoluting complex biological functions. However, single-cell studies have their own difficulties, such as minute volumes and sample amounts. Quantitative chemical analysis of single cells has emerged as a powerful new area in recent years due to several technological advancements. The development of microelectrodes has allowed the measurement of redox-active species as a function of cellular dynamics. This miniaturization trend is also evident in the separation sciences with the application of small column separations to single cells. Desorption ionization methods with mass spectrometric detection have shown single-cell capability owing to numerous technological developments. Finally, fluorescence imaging has also progressed to the point where single-cell dynamics can be probed by native fluorescence utilizing either single or multiple photon excitation. The results of these studies are reviewed with an emphasis on the quantitation of single-cell dynamics.
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    URL: http://dx.doi.org/10.1146/annurev.biophys.29.1.239
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    THE STRUCTURAL BIOLOGY OF MOLECULAR RECOGNITION BY VANCOMYCIN (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 29 (2000), S. 265-289 
    Details
    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract Vancomycin is the archetype among naturally occurring compounds known as glycopeptide antibiotics. Because it is a vital therapeutic agent used worldwide for the treatment of infections with gram-positive bacteria, emerging bacterial resistance to vancomycin is a major public health threat. Recent investigations into the mechanisms of action of glycopeptide antibiotics are driven by a need to understand their detailed mechanism of action so that new agents can be developed to overcome resistance. These investigations have revealed that glycopeptide antibiotics exhibit a rich array of complex cooperative phenomena when they bind target ligands, making them valuable model systems for the study of molecular recognition.
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    URL: http://dx.doi.org/10.1146/annurev.biophys.29.1.265
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    COMPARATIVE PROTEIN STRUCTURE MODELING OF GENES AND GENOMES (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 29 (2000), S. 291-325 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract Comparative modeling predicts the three-dimensional structure of a given protein sequence (target) based primarily on its alignment to one or more proteins of known structure (templates). The prediction process consists of fold assignment, target-template alignment, model building, and model evaluation. The number of protein sequences that can be modeled and the accuracy of the predictions are increasing steadily because of the growth in the number of known protein structures and because of the improvements in the modeling software. Further advances are necessary in recognizing weak sequence-structure similarities, aligning sequences with structures, modeling of rigid body shifts, distortions, loops and side chains, as well as detecting errors in a model. Despite these problems, it is currently possible to model with useful accuracy significant parts of approximately one third of all known protein sequences. The use of individual comparative models in biology is already rewarding and increasingly widespread. A major new challenge for comparative modeling is the integration of it with the torrents of data from genome sequencing projects as well as from functional and structural genomics. In particular, there is a need to develop an automated, rapid, robust, sensitive, and accurate comparative modeling pipeline applicable to whole genomes. Such large-scale modeling is likely to encourage new kinds of applications for the many resulting models, based on their large number and completeness at the level of the family, organism, or functional network.
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    URL: http://dx.doi.org/10.1146/annurev.biophys.29.1.291
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    PROTEIN FOLDING INTERMEDIATES AND PATHWAYS STUDIED BY HYDROGEN EXCHANGE (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 29 (2000), S. 213-238 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract In order to solve the immensely difficult protein-folding problem, it will be necessary to characterize the barriers that slow folding and the intermediate structures that promote it. Although protein-folding intermediates are not accessible to the usual structural studies, hydrogen exchange (HX) methods have been able to detect and characterize intermediates in both kinetic and equilibrium modes-as transient kinetic folding intermediates on a subsecond time scale, as labile equilibrium molten globule intermediates under destabilizing conditions, and as infinitesimally populated intermediates in the high free-energy folding landscape under native conditions. Available results consistently indicate that protein-folding landscapes are dominated by a small number of discrete, metastable, native-like partially unfolded forms (PUFs). The PUFs appear to be produced, one from another, by the unfolding and refolding of the protein's intrinsically cooperative secondary structural elements, which can spontaneously create stepwise unfolding and refolding pathways. Kinetic experiments identify three kinds of barrier processes: (a) an initial intrinsic search-nucleation-collapse process that prepares the chain for intermediate formation by pinning it into a condensed coarsely native-like topology; (b) smaller search-dependent barriers that put the secondary structural units into place; and (c) optional error-dependent misfold-reorganization barriers that can cause slow folding, intermediate accumulation, and folding heterogeneity. These conclusions provide a coherent explanation for the grossly disparate folding behavior of different globular proteins in terms of distinct folding pathways.
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    URL: http://dx.doi.org/10.1146/annurev.biophys.29.1.213
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    PULSED AND PARALLEL-POLARIZATION EPR CHARACTERIZATION OF THE PHOTOSYSTEM II OXYGEN-EVOLVING COMPLEX (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 29 (2000), S. 463-495 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract Photosystem II uses visible light to drive the oxidation of water, resulting in bioactivated electrons and protons, with the production of molecular oxygen as a byproduct. This water-splitting reaction is carried out by a manganese cluster/tyrosine radical ensemble, the oxygen-evolving complex. Although conventional continuous-wave, perpendicular-polarization electron paramagnetic resonance (EPR) spectroscopy has significantly advanced our knowledge of the structure and function of the oxygen-evolving complex, significant additional information can be obtained with the application of additional EPR methodologies. Specifically, parallel-polarization EPR spectroscopy can be used to obtain highly resolved EPR spectra of integer spin Mn species, and pulsed EPR spectroscopy with electron spin echo-based sequences, such as electron spin echo envelope modulation and electron spin echo-electron nuclear double resonance, can be used to measure weak interactions obscured in continuous-wave spectroscopy by inhomogeneous broadening.
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    URL: http://dx.doi.org/10.1146/annurev.biophys.29.1.463
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    STRESS-INDUCED STRUCTURAL TRANSITIONS IN DNA AND PROTEINS (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 29 (2000), S. 523-543 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract The ability to manipulate, stretch and twist biomolecules opens the way to an understanding of their structural transitions. We review some of the recently discovered stress-induced structural transitions in DNA as well as the application of single molecule manipulation techniques to DNA unzipping and to the study of protein folding/unfolding transitions.
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    URL: http://dx.doi.org/10.1146/annurev.biophys.29.1.523
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    ELECTROSTATIC MECHANISMS OF DNA DEFORMATION (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 29 (2000), S. 497-521 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract The genomes of higher cells consist of double-helical DNA, a densely charged polyelectrolyte of immense length. The intrinsic physical properties of DNA, as well as the properties of its complexes with proteins and ions, are therefore of fundamental interest in understanding the functions of DNA as an informational macromolecule. Because individual DNA molecules often exceed 1 cm in length, it is clear that DNA bending, folding, and interaction with nuclear proteins are necessary for packaging genomes in small volumes and for integrating the nucleotide sequence information that guides genetic readout. This review first focuses on recent experiments exploring how the shape of the densely charged DNA polymer and asymmetries in its surrounding counterion distribution mutually influence one another. Attention is then turned to experiments seeking to discover the degree to which asymmetric phosphate neutralization can lead to DNA bending in protein-DNA complexes. It is argued that electrostatic effects play crucial roles in the intrinsic, sequence-dependent shape of DNA and in DNA shapes induced by protein binding.
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    URL: http://dx.doi.org/10.1146/annurev.biophys.29.1.497
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    ATOMIC FORCE MICROSCOPY IN THE STUDY OF MACROMOLECULAR CRYSTAL GROWTH (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 29 (2000), S. 361-410 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract Atomic force microscopy (AFM) has been used to study protein, nucleic acid, and virus crystals in situ, in their mother liquors, as they grow. From sequential AFM images taken at brief intervals over many hours, or even days, the mechanisms and kinetics of the growth process can be defined. The appearance of both two- and three-dimensional nuclei on crystal surfaces have been visualized, defect structures of crystals were clearly evident, and defect densities of crystals were also determined. The incorporation of a wide range of impurities, ranging in size from molecules to microns or larger microcrystals, and even foreign particles were visually recorded. From these observations and measurements, a more complex understanding of the detailed character of macromolecular crystals is emerging, one that reveals levels of complexity previously unsuspected. The unique features of these crystals, apparently in AFM images, undoubtedly influence the diffraction properties of the crystals and the quality of the molecular images obtained by X-ray crystallography.
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    URL: http://dx.doi.org/10.1146/annurev.biophys.29.1.361
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    MOLECULAR MECHANISMS CONTROLLING ACTIN FILAMENT DYNAMICS IN NONMUSCLE CELLS (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 29 (2000), S. 545-576 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract We review how motile cells regulate actin filament assembly at their leading edge. Activation of cell surface receptors generates signals (including activated Rho family GTPases) that converge on integrating proteins of the WASp family (WASp, N-WASP, and Scar/WAVE). WASP family proteins stimulate Arp2/3 complex to nucleate actin filaments, which grow at a fixed 70o angle from the side of pre-existing actin filaments. These filaments push the membrane forward as they grow at their barbed ends. Arp2/3 complex is incorporated into the network, and new filaments are capped rapidly, so that activated Arp2/3 complex must be supplied continuously to keep the network growing. Hydrolysis of ATP bound to polymerized actin followed by phosphate dissociation marks older filaments for depolymerization by ADF/cofilins. Profilin catalyzes exchange of ADP for ATP, recycling actin back to a pool of unpolymerized monomers bound to profilin and thymosin-beta4 that is poised for rapid elongation of new barbed ends.
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    URL: http://dx.doi.org/10.1146/annurev.biophys.29.1.545
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    UNNATURAL LIGANDS FOR ENGINEERED PROTEINS: New Tools for Chemical Genetics (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 29 (2000), S. 577-606 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract Small molecules that modulate the activity of biological signaling molecules can be powerful probes of signal transduction pathways. Highly specific molecules with high affinity are difficult to identify because of the conserved nature of many protein active sites. A newly developed approach to discovery of such small molecules that relies on protein engineering and chemical synthesis has yielded powerful tools for the study of a wide variety of proteins involved in signal transduction (G-proteins, protein kinases, 7-transmembrane receptors, nuclear hormone receptors, and others). Such chemical genetic tools combine the advantages of traditional genetics and the unparalleled temporal control over protein function afforded by small molecule inhibitors/activators that act at diffusion controlled rates with targets.
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    URL: http://dx.doi.org/10.1146/annurev.biophys.29.1.577
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    THE STRUCTURE OF MAMMALIAN CYCLOOXYGENASES (2003)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 32 (2003), S. 183-206 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract Cyclooxygenases-1 and -2 (COX-1 and COX-2, also known as prostaglandin H2 synthases-1 and -2) catalyze the committed step in prostaglandin synthesis. COX-1 and -2 are of particular interest because they are the major targets of nonsteroidal antiinflammatory drugs (NSAIDs) including aspirin, ibuprofen, and the new COX-2-selective inhibitors. Inhibition of the COXs with NSAIDs acutely reduces inflammation, pain, and fever, and long-term use of these drugs reduces the incidence of fatal thrombotic events, as well as the development of colon cancer and Alzheimer's disease. In this review, we examine how the structures of COXs relate mechanistically to cyclooxygenase and peroxidase catalysis and how alternative fatty acid substrates bind within the COX active site. We further examine how NSAIDs interact with COXs and how differences in the structure of COX-2 result in enhanced selectivity toward COX-2 inhibitors.
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    URL: http://dx.doi.org/10.1146/annurev.biophys.32.110601.141906
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    COMPUTER SIMULATIONS OF ENZYME CATALYSIS: Methods, Progress, and Insights (2003)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 32 (2003), S. 425-443 
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    ISSN: 1056-8700
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Notes: Abstract Understanding the action of enzymes on an atomistic level is one of the important aims of modern biophysics. This review describes the state of the art in addressing this challenge by simulating enzymatic reactions. It considers different modeling methods including the empirical valence bond (EVB) and more standard molecular orbital quantum mechanics/molecular mechanics (QM/MM) methods. The importance of proper configurational averaging of QM/MM energies is emphasized, pointing out that at present such averages are performed most effectively by the EVB method. It is clarified that all properly conducted simulation studies have identified electrostatic preorganization effects as the source of enzyme catalysis. It is argued that the ability to simulate enzymatic reactions also provides the chance to examine the importance of nonelectrostatic contributions and the validity of the corresponding proposals. In fact, simulation studies have indicated that prominent proposals such as desolvation, steric strain, near attack conformation, entropy traps, and coherent dynamics do not account for a major part of the catalytic power of enzymes. Finally, it is pointed out that although some of the issues are likely to remain controversial for some time, computer modeling approaches can provide a powerful tool for understanding enzyme catalysis.
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    URL: http://dx.doi.org/10.1146/annurev.biophys.32.110601.141807
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    ETHYLENE: A Gaseous Signal Molecule in Plants (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Cell and Developmental Biology 16 (2000), S. 1-18 
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    ISSN: 1081-0706
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Medicine
    Notes: Abstract Ethylene regulates a multitude of plant processes, ranging from seed germination to organ senescence. Of particular economic importance is the role of ethylene as an inducer of fruit ripening. Ethylene is synthesized from S-adenosyl-L-methionine via 1-aminocyclopropane-1-carboxylic acid (ACC). The enzymes catalyzing the two reactions in this pathway are ACC synthase and ACC oxidase. Environmental and endogenous signals regulate ethylene biosynthesis primarily through differential expression of ACC synthase genes. Components of the ethylene signal transduction pathway have been identified by characterization of ethylene-response mutants in Arabidopsis thaliana. One class of mutations, exemplified by etr1, led to the identification of the ethylene receptors, which turned out to be related to bacterial two-component signaling systems. Mutations that eliminate ethylene binding to the receptor yield a dominant, ethylene-insensitive phenotype. CTR1 encodes a Raf-like Ser/Thr protein kinase that acts downstream from the ethylene receptor and may be part of a MAP kinase cascade. Mutants in CTR1 exhibit a constitutive ethylene-response phenotype. Both the ethylene receptors and CTR1 are negative regulators of ethylene responses. EIN2 and EIN3 are epistatic to CTR1, and mutations in either gene lead to ethylene insensitivity. Whereas the function of EIN2 in ethylene transduction is not known, EIN3 is a putative transcription factor involved in regulating expression of ethylene-responsive genes. Biotechnological modifications of ethylene synthesis and of sensitivity to ethylene are promising methods to prevent spoilage of agricultural products such as fruits, whose ripening is induced by ethylene.
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    URL: http://dx.doi.org/10.1146/annurev.cellbio.16.1.1
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    MECHANISMS OF SYNAPTIC VESICLE EXOCYTOSIS (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Cell and Developmental Biology 16 (2000), S. 19-49 
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    ISSN: 1081-0706
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Medicine
    Notes: Abstract Chemical synaptic transmission serves as the main form of cell to cell communication in the nervous system. Neurotransmitter release occurs through the process of regulated exocytosis, in which a synaptic vesicle releases its contents in response to an increase in calcium. The use of genetic, biochemical, structural, and functional studies has led to the identification of factors important in the synaptic vesicle life cycle. Here we focus on the prominent role of SNARE (soluble NSF attachment protein receptor) proteins during membrane fusion and the regulation of SNARE function by Rab3a, nSec1, and NSF. Many of the proteins important for transmitter release have homologs involved in intracellular vesicle transport, and all forms of vesicle trafficking share common basic principles. Finally, modifications to the synaptic exocytosis pathway are very likely to underlie certain forms of synaptic plasticity and therefore contribute to learning and memory.
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    ERM-MERLIN AND EBP50 PROTEIN FAMILIES IN PLASMA MEMBRANE ORGANIZATION AND FUNCTION (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Cell and Developmental Biology 16 (2000), S. 113-143 
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    ISSN: 1081-0706
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Medicine
    Notes: Abstract The ezrin-radixin-moesin (ERM) family of proteins have emerged as key regulatory molecules in linking F-actin to specific membrane proteins, especially in cell surface structures. Merlin, the product of the NF2 tumor suppressor gene, has sequence similarity to ERM proteins and binds to some of the same membrane proteins, but lacks a C-terminal F-actin binding site. In this review we discuss how ERM proteins and merlin are negatively regulated by an intramolecular association between their N- and C-terminal domains. Activation of at least ERM proteins can be accomplished by C-terminal phosphorylation in the presence of PIP2. We also discuss membrane proteins to which ERM and merlin bind, including those making an indirect linkage through the PDZ-containing adaptor molecules EBP50 and E3KARP. Finally, the function of these proteins in cortical structure, endocytic traffic, signal transduction, and growth control is discussed.
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    MOLECULAR REGULATION OF ADIPOGENESIS (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Cell and Developmental Biology 16 (2000), S. 145-171 
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    ISSN: 1081-0706
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Medicine
    Notes: Abstract Adipogenesis, or the development of fat cells from preadipocytes, has been one of the most intensely studied models of cellular differentiation. In part this has been because of the availability of in vitro models that faithfully recapitulate most of the critical aspects of fat cell formation in vivo. More recently, studies of adipogenesis have proceeded with the hope that manipulation of this process in humans might one day lead to a reduction in the burden of obesity and diabetes. This review explores some of the highlights of a large and burgeoning literature devoted to understanding adipogenesis at the molecular level. The hormonal and transcriptional control of adipogenesis is reviewed, as well as studies on a less well known type of fat cell, the brown adipocyte. Emphasis is placed, where possible, on in vivo studies with the hope that the results discussed may one day shed light on basic questions of cellular growth and differentiation in addition to possible benefits in human health.
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    GUT FEELINGS: Enteropathogenic E. coli (EPEC) Interactions with the Host (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Cell and Developmental Biology 16 (2000), S. 173-189 
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    ISSN: 1081-0706
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Medicine
    Notes: Abstract Enteropathogenic Escherichia coli (EPEC) is a gram-negative bacterial pathogen that adheres to human intestinal epithelial cells, resulting in watery, persistent diarrhea. It subverts the host cell cytoskeleton, causing a rearrangement of cytoskeletal components into a characteristic pedestal structure underneath adherent bacteria. In contrast to other intracellular pathogens that affect the actin cytoskeleton from inside the host cytoplasm, EPEC remains extracellular and transmits signals through the host cell plasma membrane via direct injection of virulence factors by a "molecular syringe," the bacterial type III secretion system. One injected factor is Tir, which functions as the plasma membrane receptor for EPEC adherence. Tir directly links extracellular EPEC through the epithelial membrane and firmly anchors it to the host cell actin cytoskeleton, thereby initiating pedestal formation. In addition to stimulating actin nucleation and polymerization in the host cell, EPEC activates several other signaling pathways that lead to tight junction disruption, inhibition of phagocytosis, altered ion secretion, and immune responses. This review summarizes recent developments in our understanding of EPEC pathogenesis and discusses similarities and differences between EPEC pedestals, focal contacts, and Listeria monocytogenes actin tails.
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    URL: http://dx.doi.org/10.1146/annurev.cellbio.16.1.173
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    BONE DEVELOPMENT (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Cell and Developmental Biology 16 (2000), S. 191-220 
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    ISSN: 1081-0706
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Medicine
    Notes: Abstract Early development of the vertebrate skeleton depends on genes that pattern the distribution and proliferation of cells from cranial neural crest, sclerotomes, and lateral plate mesoderm into mesenchymal condensations at sites of future skeletal elements. Within these condensations, cells differentiate to chondrocytes or osteoblasts and form cartilages and bones under the control of various transcription factors. In most of the skeleton, organogenesis results in cartilage models of future bones; in these models cartilage is replaced by bone by the process of endochondral ossification. Lastly, through a controlled process of bone growth and remodeling the final skeleton is shaped and molded. Significant and exciting insights into all aspects of vertebrate skeletal development have been obtained through molecular and genetic studies of animal models and humans with inherited disorders of skeletal morphogenesis, organogenesis, and growth.
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    URL: http://dx.doi.org/10.1146/annurev.cellbio.16.1.191
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    CELLULAR SIGNALING AND VOLUME CONTROL IN STOMATAL MOVEMENTS IN PLANTS (2000)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Cell and Developmental Biology 16 (2000), S. 221-241 
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    ISSN: 1081-0706
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Medicine
    Notes: Abstract Stomatal guard cells are unique as a plant cell model and, because of the depth of present knowledge on ion transport and its regulation, offer a first look at signal integration in higher plants. A large body of data indicates that Ca2+ and H+ act independently, integrating with protein kinases and phosphatases, to control the gating of the K+ and Cl- channels that mediate solute flux for stomatal movements. Oscillations in the cytosolic-free concentration of Ca2+ contribute to a signaling cassette, integrated within these events through an unusual coupling with membrane voltage for solute homeostasis. Similar cassettes are anticipated to include control pathways linked to cytosolic pH. Additional developments during the last two years point to events in membrane traffic that play equally important roles in stomatal control. Research in these areas is now adding entirely new dimensions to our understanding of guard cell signaling.
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    URL: http://dx.doi.org/10.1146/annurev.cellbio.16.1.221
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