ALBERT

Description: Granulomatosis with polyangiitis (Wegener's) is a rare autoimmune neutrophil-mediated vasculitis that can cause renal disease and mucosal manifestations. Antineutrophil cytoplasmic antibodies (ANCA) are present in many patients, vary in level over time, and induce neutrophil activation through engagement with Fc receptors (FcRs). Given roles for FcRs in ANCA-mediated neutrophil activation and IgA antibodies in mucosal immunity, we hypothesized that FcR genetics and previously unappreciated IgA ANCA affect clinical presentation. We assembled a total of 673 patients and 413 controls from two multicenter cohorts, performed ELISA and immunofluorescence assays to determine IgA and IgG ANCA positivity, and used Illumina, TaqMan, or Pyrosequencing to genotype eight haplotype-tagging SNPs in the IgA FcR (FCAR) and to determine NA1/NA2 genotype of FCGR3B, the most prevalent neutrophil IgG FcR. We evaluated neutrophil activation by measuring degranulation marker CD11b with flow cytometry or neutrophil extracellcular trap formation with confocal microscopy. Functional polymorphisms in FCGR3B and FCAR differed between patient groups stratified by renal involvement. IgA ANCA were found in ∼30% of patients and were less common in patients with severe renal disease. Neutrophil stimulation by IgA or IgG ANCA led to degranulation and neutrophil extracellcular trap formation in a FcR allele-specific manner (IgA:FCAR P = 0.008; IgG:FCGR3B P = 0.003). When stimulated with IgA and IgG ANCA together, IgG ANCA induced neutrophil activation was reduced (P = 0.0001). FcR genotypes, IgA ANCA, and IgG ANCA are potential prognostic and therapeutic targets for understanding the pathogenesis and presentation of granulomatosis with polyangiitis (Wegener's).

Description: Since its classification nearly 80 years ago, the human pathogen Candida albicans has been designated as an asexual yeast. In this report, we describe the construction of C. albicans strains that were subtly altered at the mating-type-like (MTL) locus, a cluster of genes that resembles the mating-type loci of other fungi. These derivatives were capable of mating after inoculation into a mammalian host. C. albicans is a diploid organism, but most of the mating products isolated from a mouse host were tetrasomic for the two chromosomes that could be rigorously monitored and, overall, exhibited substantially higher than 2n DNA content. These observations demonstrated that C. albicans can recombine sexually.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hull, C M -- Raisner, R M -- Johnson, A D -- GM37049/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2000 Jul 14;289(5477):307-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology and Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA 94143, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10894780" target="_blank"〉PubMed〈/a〉

Description: Candida albicans, the most prevalent fungal pathogen in humans, is thought to lack a sexual cycle. A set of C. albicans genes has been identified that corresponds to the master sexual cycle regulators a1, alpha1, and alpha2 of the Saccharomyces cerevisiae mating-type (MAT) locus. The C. albicans genes are arranged in a way that suggests that these genes are part of a mating type-like locus that is similar to the mating-type loci of other fungi. In addition to the transcriptional regulators a1, alpha1, and alpha2, the C. albicans mating type-like locus contains several genes not seen in other fungal MAT loci, including those encoding proteins similar to poly(A) polymerases, oxysterol binding proteins, and phosphatidylinositol kinases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hull, C M -- Johnson, A D -- GM37049/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Aug 20;285(5431):1271-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA 94143, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10455055" target="_blank"〉PubMed〈/a〉

Description: Changes in gene regulatory networks are a major source of evolutionary novelty. Here we describe a specific type of network rewiring event, one that intercalates a new level of transcriptional control into an ancient circuit. We deduce that, over evolutionary time, the direct ancestral connections between a regulator and its target genes were broken and replaced by indirect connections, preserving the overall logic of the ancestral circuit but producing a new behaviour. The example was uncovered through a series of experiments in three ascomycete yeasts: the bakers' yeast Saccharomyces cerevisiae, the dairy yeast Kluyveromyces lactis and the human pathogen Candida albicans. All three species have three cell types: two mating-competent cell forms (a and alpha) and the product of their mating (a/alpha), which is mating-incompetent. In the ancestral mating circuit, two homeodomain proteins, Mata1 and Matalpha2, form a heterodimer that directly represses four genes that are expressed only in a and alpha cells and are required for mating. In a relatively recent ancestor of K. lactis, a reorganization occurred. The Mata1-Matalpha2 heterodimer represses the same four genes (known as the core haploid-specific genes) but now does so indirectly through an intermediate regulatory protein, Rme1. The overall logic of the ancestral circuit is preserved (haploid-specific genes ON in a and alpha cells and OFF in a/alpha cells), but a new phenotype was produced by the rewiring: unlike S. cerevisiae and C. albicans, K. lactis integrates nutritional signals, by means of Rme1, into the decision of whether or not to mate.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3254258/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3254258/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Booth, Lauren N -- Tuch, Brian B -- Johnson, Alexander D -- R01 GM037049/GM/NIGMS NIH HHS/ -- R01 GM037049-26/GM/NIGMS NIH HHS/ -- R01 GM037049-27/GM/NIGMS NIH HHS/ -- England -- Nature. 2010 Dec 16;468(7326):959-63. doi: 10.1038/nature09560.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology and Department of Biochemistry and Biophysics, University of California, San Francisco, California 94158, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21164485" target="_blank"〉PubMed〈/a〉

Description: Observation of magnetic vortex pairs at room temperature in a planar α-Fe 2 O 3 /Co heterostructure Observation of magnetic vortex pairs at room temperature in a planar α-Fe〈sub〉2〈/sub〉O〈sub〉3〈/sub〉/Co heterostructure, Published online: 18 June 2018; doi:10.1038/s41563-018-0101-x Magnetic vortices formed in antiferromagnetic haematite and imprinted on a Co ferromagnetic over-layer have been observed using X-ray magnetic linear and circular dichroism photoemission electron microscopy. These vortex pairs can be manipulated by the application of magnetic fields.

Description: Myocardial infarction (MI), a leading cause of death around the world, displays a complex pattern of inheritance. When MI occurs early in life, genetic inheritance is a major component to risk. Previously, rare mutations in low-density lipoprotein (LDL) genes have been shown to contribute to MI risk in individual families, whereas common variants at more than 45 loci have been associated with MI risk in the population. Here we evaluate how rare mutations contribute to early-onset MI risk in the population. We sequenced the protein-coding regions of 9,793 genomes from patients with MI at an early age (〈/=50 years in males and 〈/=60 years in females) along with MI-free controls. We identified two genes in which rare coding-sequence mutations were more frequent in MI cases versus controls at exome-wide significance. At low-density lipoprotein receptor (LDLR), carriers of rare non-synonymous mutations were at 4.2-fold increased risk for MI; carriers of null alleles at LDLR were at even higher risk (13-fold difference). Approximately 2% of early MI cases harbour a rare, damaging mutation in LDLR; this estimate is similar to one made more than 40 years ago using an analysis of total cholesterol. Among controls, about 1 in 217 carried an LDLR coding-sequence mutation and had plasma LDL cholesterol 〉 190 mg dl(-1). At apolipoprotein A-V (APOA5), carriers of rare non-synonymous mutations were at 2.2-fold increased risk for MI. When compared with non-carriers, LDLR mutation carriers had higher plasma LDL cholesterol, whereas APOA5 mutation carriers had higher plasma triglycerides. Recent evidence has connected MI risk with coding-sequence mutations at two genes functionally related to APOA5, namely lipoprotein lipase and apolipoprotein C-III (refs 18, 19). Combined, these observations suggest that, as well as LDL cholesterol, disordered metabolism of triglyceride-rich lipoproteins contributes to MI risk.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4319990/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4319990/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Do, Ron -- Stitziel, Nathan O -- Won, Hong-Hee -- Jorgensen, Anders Berg -- Duga, Stefano -- Angelica Merlini, Pier -- Kiezun, Adam -- Farrall, Martin -- Goel, Anuj -- Zuk, Or -- Guella, Illaria -- Asselta, Rosanna -- Lange, Leslie A -- Peloso, Gina M -- Auer, Paul L -- NHLBI Exome Sequencing Project -- Girelli, Domenico -- Martinelli, Nicola -- Farlow, Deborah N -- DePristo, Mark A -- Roberts, Robert -- Stewart, Alexander F R -- Saleheen, Danish -- Danesh, John -- Epstein, Stephen E -- Sivapalaratnam, Suthesh -- Hovingh, G Kees -- Kastelein, John J -- Samani, Nilesh J -- Schunkert, Heribert -- Erdmann, Jeanette -- Shah, Svati H -- Kraus, William E -- Davies, Robert -- Nikpay, Majid -- Johansen, Christopher T -- Wang, Jian -- Hegele, Robert A -- Hechter, Eliana -- Marz, Winfried -- Kleber, Marcus E -- Huang, Jie -- Johnson, Andrew D -- Li, Mingyao -- Burke, Greg L -- Gross, Myron -- Liu, Yongmei -- Assimes, Themistocles L -- Heiss, Gerardo -- Lange, Ethan M -- Folsom, Aaron R -- Taylor, Herman A -- Olivieri, Oliviero -- Hamsten, Anders -- Clarke, Robert -- Reilly, Dermot F -- Yin, Wu -- Rivas, Manuel A -- Donnelly, Peter -- Rossouw, Jacques E -- Psaty, Bruce M -- Herrington, David M -- Wilson, James G -- Rich, Stephen S -- Bamshad, Michael J -- Tracy, Russell P -- Cupples, L Adrienne -- Rader, Daniel J -- Reilly, Muredach P -- Spertus, John A -- Cresci, Sharon -- Hartiala, Jaana -- Tang, W H Wilson -- Hazen, Stanley L -- Allayee, Hooman -- Reiner, Alex P -- Carlson, Christopher S -- Kooperberg, Charles -- Jackson, Rebecca D -- Boerwinkle, Eric -- Lander, Eric S -- Schwartz, Stephen M -- Siscovick, David S -- McPherson, Ruth -- Tybjaerg-Hansen, Anne -- Abecasis, Goncalo R -- Watkins, Hugh -- Nickerson, Deborah A -- Ardissino, Diego -- Sunyaev, Shamil R -- O'Donnell, Christopher J -- Altshuler, David -- Gabriel, Stacey -- Kathiresan, Sekar -- 090532/Wellcome Trust/United Kingdom -- 095552/Wellcome Trust/United Kingdom -- 5U54HG003067-11/HG/NHGRI NIH HHS/ -- G-0907/Parkinson's UK/United Kingdom -- K08 HL114642/HL/NHLBI NIH HHS/ -- K08HL114642/HL/NHLBI NIH HHS/ -- P01 HL076491/HL/NHLBI NIH HHS/ -- P01 HL098055/HL/NHLBI NIH HHS/ -- R01 HL107816/HL/NHLBI NIH HHS/ -- R01HL107816/HL/NHLBI NIH HHS/ -- RC2 HL-102923/HL/NHLBI NIH HHS/ -- RC2 HL-102924/HL/NHLBI NIH HHS/ -- RC2 HL-102925/HL/NHLBI NIH HHS/ -- RC2 HL-102926/HL/NHLBI NIH HHS/ -- RC2 HL-103010/HL/NHLBI NIH HHS/ -- T32 HL007208/HL/NHLBI NIH HHS/ -- T32HL00720/HL/NHLBI NIH HHS/ -- T32HL007604/HL/NHLBI NIH HHS/ -- UL1 TR000439/TR/NCATS NIH HHS/ -- Canadian Institutes of Health Research/Canada -- England -- Nature. 2015 Feb 5;518(7537):102-6. doi: 10.1038/nature13917. Epub 2014 Dec 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Center for Human Genetic Research, Massachusetts General Hospital, Boston, Massachusetts 02114, USA. [2] Cardiovascular Research Center, Massachusetts General Hospital, Boston, Massachusetts 02114, USA. [3] Department of Medicine, Harvard Medical School, Boston, Massachusetts 02114, USA. [4] Program in Medical and Population Genetics, Broad Institute, 7 Cambridge Center, Cambridge, Massachusetts 02142, USA. ; 1] Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St Louis, Missouri 63110, USA. [2] Division of Statistical Genomics, Washington University School of Medicine, St Louis, Missouri 63110, USA. ; Department of Clinical Biochemistry KB3011, Section for Molecular Genetics, Rigshospitalet, Copenhagen University Hospitals and Faculty of Health Sciences, University of Copenhagen, Copenhagen 1165, Denmark. ; Dipartimento di Biotecnologie Mediche e Medicina Traslazionale, Universita degli Studi di Milano, Milano 20122, Italy. ; Division of Cardiology, Ospedale Niguarda, Milano 20162, Italy. ; Program in Medical and Population Genetics, Broad Institute, 7 Cambridge Center, Cambridge, Massachusetts 02142, USA. ; Department of Cardiovascular Medicine, The Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX1 2J, UK. ; Department of Genetics, University of North Carolina, Chapel Hill, North Carolina 27599, USA. ; Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington 98109, USA. ; University of Verona School of Medicine, Department of Medicine, Verona 37129, Italy. ; John &Jennifer Ruddy Canadian Cardiovascular Genetics Centre, University of Ottawa Heart Institute, Ottawa, Ontario K1Y 4W7, Canada. ; Department of Public Health and Primary Care, University of Cambridge, Cambridge CB2 1TN, UK. ; MedStar Health Research Institute, Cardiovascular Research Institute, Hyattsville, Maryland 20782, USA. ; Department of Vascular Medicine, Academic Medical Center, Amsterdam 1105 AZ, The Netherlands. ; Department of Cardiovascular Sciences, University of Leicester, and Leicester NIHR Biomedical Research Unit in Cardiovascular Disease, Glenfield Hospital, Leicester LE3 9QP, UK. ; DZHK (German Research Centre for Cardiovascular Research), Munich Heart Alliance, Deutsches Herzzentrum Munchen, Technische Universitat Munchen, Berlin 13347, Germany. ; Medizinische Klinik II, University of Lubeck, Lubeck 23562, Germany. ; 1] Center for Human Genetics, Duke University, Durham, North Carolina 27708, USA. [2] Department of Cardiology and Center for Genomic Medicine, Duke University School of Medicine, Durham, North Carolina 27708, USA. ; Department of Cardiology and Center for Genomic Medicine, Duke University School of Medicine, Durham, North Carolina 27708, USA. ; Division of Cardiology, University of Ottawa Heart Institute, Ottawa, Ontario K1Y 4W7, Canada. ; Department of Biochemistry, Schulich School of Medicine and Dentistry, Robarts Research Institute, University of Western Ontario, London, Ontario N6A 3K7, Canada. ; 1] Department of Biochemistry, Schulich School of Medicine and Dentistry, Robarts Research Institute, University of Western Ontario, London, Ontario N6A 3K7, Canada. [2] Department of Medicine, Schulich School of Medicine and Dentistry, Robarts Research Institute, University of Western Ontario, London, Ontario N6A 3K7, Canada. ; 1] Medical Faculty Mannheim, Mannheim Institute of Public Health, Social and Preventive Medicine, Heidelberg University, Ludolf Krehl Strasse 7-11, Mannheim D-68167, Germany. [2] Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz 8036, Austria. [3] Synlab Academy, Mannheim 68259, Germany. ; Medical Faculty Mannheim, Mannheim Institute of Public Health, Social and Preventive Medicine, Heidelberg University, Ludolf Krehl Strasse 7-11, Mannheim D-68167, Germany. ; The National Heart, Lung, Blood Institute's Framingham Heart Study, Framingham, Massachusetts 01702, USA. ; National Heart, Lung, and Blood Institute Center for Population Studies, The Framingham Heart Study, Framingham, Massachusetts 01702, USA. ; Department of Biostatistics and Epidemiology, School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; Department of Epidemiology, University of Alabama-Birmingham, Birmingham, Alabama 35233, USA. ; Department of Laboratory Medicine and Pathology, School of Medicine, University of Minnesota, Minneapolis, Minnesota 55455, USA. ; School of Medicine, Wake Forest University, Winston-Salem, North Carolina 27106, USA. ; Department of Medicine, Stanford University School of Medicine, Stanford, California 94305, USA. ; Department of Epidemiology, University of North Carolina, Chapel Hill, North Carolina 27599, USA. ; 1] Department of Genetics, University of North Carolina, Chapel Hill, North Carolina 27599, USA. [2] Carolina Center for Genome Sciences, University of North Carolina, Chapel Hill, North Carolina 27599, USA. ; Division of Epidemiology and Community Health, University of Minnesota School of Public Health, Minneapolis, Minnesota 55455, USA. ; University of Mississippi Medical Center, Jackson, Mississippi 39216, USA. ; Atherosclerosis Research Unit, Department of Medicine, and Center for Molecular Medicine, Karolinska Institutet, Stockholm 171 77, Sweden. ; Clinical Trial Service Unit and Epidemiological Studies Unit, University of Oxford, Oxford OX1 2JD, UK. ; Merck Sharp &Dohme Corporation, Rahway, New Jersey 08889, USA. ; The Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX1 2JD, UK. ; 1] The Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX1 2JD, UK. [2] Department of Statistics, University of Oxford, Oxford OX1 2JD, UK. ; National Heart, Lung, and Blood Institute, Bethesda, Maryland 20824, USA. ; 1] Cardiovascular Health Research Unit, Departments of Medicine, Epidemiology, and Health Services, University of Washington, Seattle, Washington 98195, USA. [2] Group Health Research Institute, Group Health Cooperative, Seattle, Washington 98101, USA. ; Section on Cardiology, and Public Health Sciences, Wake Forest School of Medicine, Winston-Salem, North Carolina 27106, USA. ; Jackson Heart Study, University of Mississippi Medical Center, Jackson State University, Jackson, Mississippi 39217, USA. ; Center for Public Health Genomics, University of Virginia, Charlottesville, Virginia 22904, USA. ; 1] Division of Genetic Medicine, Department of Pediatrics, University of Washington, Seattle, Washington 98195, USA. [2] Seattle Children's Hospital, Seattle, Washington 98105, USA. [3] Department of Genome Sciences, University of Washington, Seattle, Washington 98195, USA. ; Department of Biochemistry, University of Vermont, Burlington, Vermont 05405, USA. ; Department of Biostatistics, Boston University School of Public Health, Boston, Massachusetts 02118, USA. ; Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; Cardiovascular Institute, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; St Luke's Mid America Heart Institute, University of Missouri-Kansas City, Kansas City, Missouri 64111, USA. ; 1] Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St Louis, Missouri 63110, USA. [2] Department of Genetics, Washington University in St Louis, Missouri 63130, USA. ; Department of Preventive Medicine and Institute for Genetic Medicine, University of Southern California Keck School of Medicine, Los Angeles, California 90033, USA. ; Cardiovascular Medicine, Cleveland Clinic, Cleveland, Ohio 44195, USA. ; 1] Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington 98109, USA. [2] Department of Epidemiology, University of Washington, Seattle, Washington 98195, USA. ; Ohio State University, Columbus, Ohio 43210, USA. ; Human Genetics Center, The University of Texas Health Science Center at Houston, Houston, Texas 77030, USA. ; 1] Department of Epidemiology, University of Washington, Seattle, Washington 98195, USA. [2] Department of Medicine, School of Medicine, University of Washington, Seattle, Washington 98195, USA. ; 1] Department of Clinical Biochemistry KB3011, Section for Molecular Genetics, Rigshospitalet, Copenhagen University Hospitals and Faculty of Health Sciences, University of Copenhagen, Copenhagen 1165, Denmark. [2] Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200 Kobenhavn N, Denmark. ; Center for Statistical Genetics, Department of Biostatistics, University of Michigan, Ann Arbor, Missouri 48109, USA. ; 1] Department of Cardiovascular Medicine, The Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX1 2J, UK. [2] The Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX1 2JD, UK. ; Department of Genome Sciences, University of Washington, Seattle, Washington 98195, USA. ; Department of Cardiology, Parma Hospital, Parma 43100, Italy. ; 1] Program in Medical and Population Genetics, Broad Institute, 7 Cambridge Center, Cambridge, Massachusetts 02142, USA. [2] Division of Genetics, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA. ; 1] Center for Human Genetic Research, Massachusetts General Hospital, Boston, Massachusetts 02114, USA. [2] Program in Medical and Population Genetics, Broad Institute, 7 Cambridge Center, Cambridge, Massachusetts 02142, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25487149" target="_blank"〉PubMed〈/a〉

Description: Studies in heterogeneous catalysis have long speculated on or have provided indirect evidence for the role of hydrogen embedded in the catalyst bulk as a primary reactant. This report describes experiments carried out under single-collision conditions that document the distinctive reactivity of hydrogen embedded in the bulk of the metal catalyst. Specifically, the bulk H atom is shown to be the reactive species in the hydrogenation of CH(3) adsorbed on Ni(111) to form CH(4), while the H atoms bound to the surface were unreactive. These results unambiguously demonstrate the importance of bulk species to heterogeneous catalytic chemistry.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Johnson, A D -- Daley, S P -- Utz, A L -- Ceyer, S T -- New York, N.Y. -- Science. 1992 Jul 10;257(5067):223-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17794753" target="_blank"〉PubMed〈/a〉

Description: The gradual modification of transcription circuits over evolutionary time scales is an important source of the diversity of life. Over the past decade, studies in animals have shown how seemingly small molecular changes in gene regulation can have large effects on morphology and physiology and how selective pressures can act on these changes. More recently, genome-wide studies, particularly those in single-cell yeasts, have uncovered evidence of extensive transcriptional rewiring, indicating that even closely related organisms regulate their genes using markedly different circuitries.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tuch, Brian B -- Li, Hao -- Johnson, Alexander D -- New York, N.Y. -- Science. 2008 Mar 28;319(5871):1797-9. doi: 10.1126/science.1152398.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Biophysics, University of California, San Francisco, CA, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18369141" target="_blank"〉PubMed〈/a〉

Description: To explore the mechanisms and evolution of cell-cycle control, we analyzed the position and conservation of large numbers of phosphorylation sites for the cyclin-dependent kinase Cdk1 in the budding yeast Saccharomyces cerevisiae. We combined specific chemical inhibition of Cdk1 with quantitative mass spectrometry to identify the positions of 547 phosphorylation sites on 308 Cdk1 substrates in vivo. Comparisons of these substrates with orthologs throughout the ascomycete lineage revealed that the position of most phosphorylation sites is not conserved in evolution; instead, clusters of sites shift position in rapidly evolving disordered regions. We propose that the regulation of protein function by phosphorylation often depends on simple nonspecific mechanisms that disrupt or enhance protein-protein interactions. The gain or loss of phosphorylation sites in rapidly evolving regions could facilitate the evolution of kinase-signaling circuits.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2813701/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2813701/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holt, Liam J -- Tuch, Brian B -- Villen, Judit -- Johnson, Alexander D -- Gygi, Steven P -- Morgan, David O -- GM037049/GM/NIGMS NIH HHS/ -- GM50684/GM/NIGMS NIH HHS/ -- HG3456/HG/NHGRI NIH HHS/ -- R01 GM069901/GM/NIGMS NIH HHS/ -- R01 GM069901-06/GM/NIGMS NIH HHS/ -- R01 HG003456/HG/NHGRI NIH HHS/ -- R01 HG003456-06/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2009 Sep 25;325(5948):1682-6. doi: 10.1126/science.1172867.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departments of Physiology and Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA 94158, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19779198" target="_blank"〉PubMed〈/a〉

Description: The evolutionary forces responsible for intron loss are unresolved. Whereas research has focused on protein-coding genes, here we analyze noncoding small nucleolar RNA (snoRNA) genes in which introns, rather than exons, are typically the functional elements. Within the yeast lineage exemplified by the human pathogen Candida albicans, we find--through deep RNA sequencing and genome-wide annotation of splice junctions--extreme compaction and loss of associated exons, but retention of snoRNAs within introns. In the Saccharomyces yeast lineage, however, we find it is the introns that have been lost through widespread degeneration of splicing signals. This intron loss, perhaps facilitated by innovations in snoRNA processing, is distinct from that observed in protein-coding genes with respect to both mechanism and evolutionary timing.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3496775/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3496775/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mitrovich, Quinn M -- Tuch, Brian B -- De La Vega, Francisco M -- Guthrie, Christine -- Johnson, Alexander D -- GM021119/GM/NIGMS NIH HHS/ -- GM37049/GM/NIGMS NIH HHS/ -- R01 GM037049/GM/NIGMS NIH HHS/ -- R01 GM037049-26/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2010 Nov 5;330(6005):838-41. doi: 10.1126/science.1194554.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA 94143-2200, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21051641" target="_blank"〉PubMed〈/a〉