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  • 1
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    Molecular recognition at crystal interfaces (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-08-09
    Description: Nucleation, growth, and dissolution of crystals have been studied by stereochemical approach involving molecular recognition at interfaces. A methodology is described for using ;;tailor-made'' additives designed to interact stereospecifically with crystal surfaces during growth and dissolution. This procedure was instrumental in controlling crystal morphology and in revising the concept of the structure and symmetry of solid solutions. Consequently, it was applied to the transformation of centrosymmetric single crystals into solid solutions with polar arrangement displaying second-harmonic generation and to the performance of asymmetric synthesis of guest molecules inside centrosymmetric host crystals. The method has led to a discovery of a new ;;relay'' mechanism explaining the effect of solvent on crystal growth. Finally, it allowed for the design of auxiliary molecules that act as promoters or inhibitors of crystal nucleation that can be used to resolve enantiomers and crystallize desired polymorphs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weissbuch, I -- Addadi, L -- Leiserowitz, L -- New York, N.Y. -- Science. 1991 Aug 9;253(5020):637-45.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17772367" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Intercalation of sea urchin proteins in calcite: study of a crystalline composite material (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-11-02
    Description: Sea urchin skeletal elements are composed of single crystals of calcite. Unlike their synthetic counterparts, these crystals do not have well-developed cleavage and are consequently much more resistant to fracture. This phenomenon is due in part to the presence of acidic glycoproteins occluded within the crystals. By means of x-ray diffraction with synchrotron radiation, it is shown that the presence of the protein in synthetic calcite only slightly decreases the coherence length but significantly increases the angular spread of perfect domains of the crystals. In biogenic calcite, the coherence length is 1/3 to 1/4 as much as that in synthetic calcite and the angular spread is 20 to 50 times as wide. It is proposed that the presence of macromolecules concentrated at mosaic boundaries that are oblique to deavage planes is responsible for the change in fracture properties. These results may be important in the material sciences, because of the unusual nature of this material, namely, a composite based on the controlled intercalation of macromolecules inside single-crystal lattices.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berman, A -- Addadi, L -- Kvick, A -- Leiserowitz, L -- Nelson, M -- Weiner, S -- New York, N.Y. -- Science. 1990 Nov 2;250(4981):664-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17810868" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    Sea urchin spine calcite forms via a transient amorphous calcium carbonate phase (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-11-13
    Description: The skeletons of adult echinoderms comprise large single crystals of calcite with smooth convoluted fenestrated morphologies, raising many questions about how they form. By using water etching, infrared spectroscopy, electron diffraction, and environmental scanning electron microscopy, we show that sea urchin spine regeneration proceeds via the initial deposition of amorphous calcium carbonate. Because most echinoderms produce the same type of skeletal material, they probably all use this same mechanism. Deposition of transient amorphous phases as a strategy for producing single crystals with complex morphology may have interesting implications for the development of sophisticated materials.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Politi, Yael -- Arad, Talmon -- Klein, Eugenia -- Weiner, Steve -- Addadi, Lia -- New York, N.Y. -- Science. 2004 Nov 12;306(5699):1161-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Structural Biology, 76100 Rehovot, Israel.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15539597" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium Carbonate/chemistry/*metabolism ; Crystallization ; Microscopy, Electron ; Microscopy, Electron, Scanning ; *Regeneration ; Sea Urchins/anatomy & histology/*physiology ; Spectrophotometry, Infrared ; Spectroscopy, Fourier Transform Infrared
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Structural biology. Choosing the crystallization path less traveled (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-08-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weiner, S -- Sagi, I -- Addadi, L -- New York, N.Y. -- Science. 2005 Aug 12;309(5737):1027-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Structural Biology, Weizmann Institute of Science, Rehovot 76100, Israel. steve.weiner@weizmann.ac.il〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16099970" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium Carbonate/*chemistry/metabolism ; *Crystallization ; Hydrogen-Ion Concentration ; Mollusca/*chemistry/metabolism ; Odontogenesis ; Osteogenesis ; Sea Urchins/*chemistry/metabolism ; Temperature ; Vertebrates/physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    Biomineralization. At the cutting edge (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-10-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weiner, Steve -- Addadi, Lia -- New York, N.Y. -- Science. 2002 Oct 11;298(5592):375-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Structural Biology, Weizmann Institute of Science, Rehovot 76100, Israel. steve.weiner@weizmann.ac.il〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12376692" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Binding Sites ; Biomechanical Phenomena ; Chlorides/*analysis/chemistry/metabolism ; Copper/*analysis/chemistry/metabolism ; Hardness ; Humans ; Minerals/*analysis/metabolism ; Polychaeta/anatomy & histology/*chemistry/physiology ; Proteins/chemistry/metabolism ; Tooth/chemistry/physiology ; Vertebrates/anatomy & histology/physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    Biological control of crystal texture: a widespread strategy for adapting crystal properties to function (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-02-05
    Description: Textures of calcite crystals from a variety of mineralized tissues belonging to organisms from four phyla were examined with high-resolution synchrotron x-ray radiation. Significant differences in coherence length and angular spread were observed between taxonomic groups. Crystals from polycrystalline skeletal ensembles were more perfect than those that function as single-crystal elements. Different anisotropic effects on crystal texture were observed for sea urchin and mollusk calcite crystals, whereas none was found for the foraminifer, Patellina, and the control calcite crystals. These results show that the manipulation of crystal texture in different organisms is under biological control and that crystal textures in some tissues are adapted to function. A better understanding of this apparently widespread biological phenomenon may provide new insights for improving synthetic crystal-containing materials.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berman, A -- Hanson, J -- Leiserowitz, L -- Koetzle, T F -- Weiner, S -- Addadi, L -- New York, N.Y. -- Science. 1993 Feb 5;259(5096):776-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17809339" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    Differential adhesion of cells to enantiomorphous crystal surfaces (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-03-11
    Description: Interactions during cell adhesion to external surfaces may reach the level of discrimination of molecular chirality. Cultured epithelial cells interact differently with the [011] faces of the (R,R) and (S,S) calcium tartrate tetrahydrate crystals. In a modified version of the classical Pasteur experiment, the enantiomorphous crystals were sorted out from a 1:1 mixture by the selective adhesion of cells to the (R,R) crystals. This stereospecificity results from molecular recognition between chiral components on the cell surface and the structured crystal surface. Crystals may allow experimental differentiation between distinct stages in cell substrate contacts, providing mechanistic information not readily attainable on conventional heterogeneous surfaces.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hanein, D -- Geiger, B -- Addadi, L -- New York, N.Y. -- Science. 1994 Mar 11;263(5152):1413-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Structural Biology, Weizmann Institute of Science, Rehovot, Israel.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8128221" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Adhesion ; Cell Line ; Computer Graphics ; Crystallization ; Humans ; Oligopeptides/pharmacology ; Stereoisomerism ; Surface Properties ; *Tartrates ; Tumor Cells, Cultured ; Xenopus laevis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
    Electronic Resource
    Electronic Resource
    Resolution of conglomerates with the assistance of tailor-made impurities. Generality and mechanistic aspects of the "rule of reversal". A new method for assignment of absolute configuration (1982)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 104 (1982), S. 4610-4617 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00381a018
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  • 9
    Electronic Resource
    Electronic Resource
    Use of "enantiopolar" directions in centrosymmetric crystals for direct assignment of absolute configuration of chiral molecules: application to the system serine/threonine (1982)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 104 (1982), S. 2075-2077 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00371a071
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  • 10
    Electronic Resource
    Electronic Resource
    Interactions of various skeletal intracrystalline components with calcite crystals (1993)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 115 (1993), S. 11691-11697 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00078a005
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