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  • 1
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    The sequence and de novo assembly of the giant panda genome (2009)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2009-12-17
    Description: Using next-generation sequencing technology alone, we have successfully generated and assembled a draft sequence of the giant panda genome. The assembled contigs (2.25 gigabases (Gb)) cover approximately 94% of the whole genome, and the remaining gaps (0.05 Gb) seem to contain carnivore-specific repeats and tandem repeats. Comparisons with the dog and human showed that the panda genome has a lower divergence rate. The assessment of panda genes potentially underlying some of its unique traits indicated that its bamboo diet might be more dependent on its gut microbiome than its own genetic composition. We also identified more than 2.7 million heterozygous single nucleotide polymorphisms in the diploid genome. Our data and analyses provide a foundation for promoting mammalian genetic research, and demonstrate the feasibility for using next-generation sequencing technologies for accurate, cost-effective and rapid de novo assembly of large eukaryotic genomes.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3951497/" 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/PMC3951497/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Ruiqiang -- Fan, Wei -- Tian, Geng -- Zhu, Hongmei -- He, Lin -- Cai, Jing -- Huang, Quanfei -- Cai, Qingle -- Li, Bo -- Bai, Yinqi -- Zhang, Zhihe -- Zhang, Yaping -- Wang, Wen -- Li, Jun -- Wei, Fuwen -- Li, Heng -- Jian, Min -- Li, Jianwen -- Zhang, Zhaolei -- Nielsen, Rasmus -- Li, Dawei -- Gu, Wanjun -- Yang, Zhentao -- Xuan, Zhaoling -- Ryder, Oliver A -- Leung, Frederick Chi-Ching -- Zhou, Yan -- Cao, Jianjun -- Sun, Xiao -- Fu, Yonggui -- Fang, Xiaodong -- Guo, Xiaosen -- Wang, Bo -- Hou, Rong -- Shen, Fujun -- Mu, Bo -- Ni, Peixiang -- Lin, Runmao -- Qian, Wubin -- Wang, Guodong -- Yu, Chang -- Nie, Wenhui -- Wang, Jinhuan -- Wu, Zhigang -- Liang, Huiqing -- Min, Jiumeng -- Wu, Qi -- Cheng, Shifeng -- Ruan, Jue -- Wang, Mingwei -- Shi, Zhongbin -- Wen, Ming -- Liu, Binghang -- Ren, Xiaoli -- Zheng, Huisong -- Dong, Dong -- Cook, Kathleen -- Shan, Gao -- Zhang, Hao -- Kosiol, Carolin -- Xie, Xueying -- Lu, Zuhong -- Zheng, Hancheng -- Li, Yingrui -- Steiner, Cynthia C -- Lam, Tommy Tsan-Yuk -- Lin, Siyuan -- Zhang, Qinghui -- Li, Guoqing -- Tian, Jing -- Gong, Timing -- Liu, Hongde -- Zhang, Dejin -- Fang, Lin -- Ye, Chen -- Zhang, Juanbin -- Hu, Wenbo -- Xu, Anlong -- Ren, Yuanyuan -- Zhang, Guojie -- Bruford, Michael W -- Li, Qibin -- Ma, Lijia -- Guo, Yiran -- An, Na -- Hu, Yujie -- Zheng, Yang -- Shi, Yongyong -- Li, Zhiqiang -- Liu, Qing -- Chen, Yanling -- Zhao, Jing -- Qu, Ning -- Zhao, Shancen -- Tian, Feng -- Wang, Xiaoling -- Wang, Haiyin -- Xu, Lizhi -- Liu, Xiao -- Vinar, Tomas -- Wang, Yajun -- Lam, Tak-Wah -- Yiu, Siu-Ming -- Liu, Shiping -- Zhang, Hemin -- Li, Desheng -- Huang, Yan -- Wang, Xia -- Yang, Guohua -- Jiang, Zhi -- Wang, Junyi -- Qin, Nan -- Li, Li -- Li, Jingxiang -- Bolund, Lars -- Kristiansen, Karsten -- Wong, Gane Ka-Shu -- Olson, Maynard -- Zhang, Xiuqing -- Li, Songgang -- Yang, Huanming -- Wang, Jian -- Wang, Jun -- R01 HG003229/HG/NHGRI NIH HHS/ -- R01 HG003229-05/HG/NHGRI NIH HHS/ -- England -- Nature. 2010 Jan 21;463(7279):311-7. doi: 10.1038/nature08696. Epub 2009 Dec 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉BGI-Shenzhen, Shenzhen 518083, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20010809" target="_blank"〉PubMed〈/a〉
    Keywords: Algorithms ; Animals ; China ; Conserved Sequence/genetics ; Contig Mapping ; Diet/veterinary ; Dogs ; Evolution, Molecular ; Female ; Fertility/genetics/physiology ; Genome/*genetics ; *Genomics ; Heterozygote ; Humans ; Multigene Family/genetics ; Polymorphism, Single Nucleotide/genetics ; Receptors, G-Protein-Coupled/genetics ; Sequence Alignment ; Sequence Analysis, DNA ; Synteny/genetics ; Ursidae/classification/*genetics/physiology
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 2
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    The ITQ-37 mesoporous chiral zeolite (2009)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2009-05-02
    Description: The synthesis of crystalline molecular sieves with pore dimensions that fill the gap between microporous and mesoporous materials is a matter of fundamental and industrial interest. The preparation of zeolitic materials with extralarge pores and chiral frameworks would permit many new applications. Two important steps in this direction include the synthesis of ITQ-33, a stable zeolite with 18 x 10 x 10 ring windows, and the synthesis of SU-32, which has an intrinsically chiral zeolite structure and where each crystal exhibits only one handedness. Here we present a germanosilicate zeolite (ITQ-37) with extralarge 30-ring windows. Its structure was determined by combining selected area electron diffraction (SAED) and powder X-ray diffraction (PXRD) in a charge-flipping algorithm. The framework follows the SrSi(2) (srs) minimal net and forms two unique cavities, each of which is connected to three other cavities to form a gyroidal channel system. These cavities comprise the enantiomorphous srs net of the framework. ITQ-37 is the first chiral zeolite with one single gyroidal channel. It has the lowest framework density (10.3 T atoms per 1,000 A(3)) of all existing 4-coordinated crystalline oxide frameworks, and the pore volume of the corresponding silica polymorph would be 0.38 cm(3) g(-1).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sun, Junliang -- Bonneau, Charlotte -- Cantin, Angel -- Corma, Avelino -- Diaz-Cabanas, Maria J -- Moliner, Manuel -- Zhang, Daliang -- Li, Mingrun -- Zou, Xiaodong -- England -- Nature. 2009 Apr 30;458(7242):1154-7. doi: 10.1038/nature07957.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Structural Chemistry and Berzelii Centre, EXSELENT on Porous Materials, Stockholm University, SE-106 91, Stockholm, Sweden.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19407798" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 3
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    Presenilins are essential for regulating neurotransmitter release (2009)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2009-07-31
    Description: Mutations in the presenilin genes are the main cause of familial Alzheimer's disease. Loss of presenilin activity and/or accumulation of amyloid-beta peptides have been proposed to mediate the pathogenesis of Alzheimer's disease by impairing synaptic function. However, the precise site and nature of the synaptic dysfunction remain unknown. Here we use a genetic approach to inactivate presenilins conditionally in either presynaptic (CA3) or postsynaptic (CA1) neurons of the hippocampal Schaeffer-collateral pathway. We show that long-term potentiation induced by theta-burst stimulation is decreased after presynaptic but not postsynaptic deletion of presenilins. Moreover, we found that presynaptic but not postsynaptic inactivation of presenilins alters short-term plasticity and synaptic facilitation. The probability of evoked glutamate release, measured with the open-channel NMDA (N-methyl-D-aspartate) receptor antagonist MK-801, is reduced by presynaptic inactivation of presenilins. Notably, depletion of endoplasmic reticulum Ca(2+) stores by thapsigargin, or blockade of Ca(2+) release from these stores by ryanodine receptor inhibitors, mimics and occludes the effects of presynaptic presenilin inactivation. Collectively, these results indicate a selective role for presenilins in the activity-dependent regulation of neurotransmitter release and long-term potentiation induction by modulation of intracellular Ca(2+) release in presynaptic terminals, and further suggest that presynaptic dysfunction might be an early pathogenic event leading to dementia and neurodegeneration in Alzheimer's disease.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2744588/" 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/PMC2744588/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Chen -- Wu, Bei -- Beglopoulos, Vassilios -- Wines-Samuelson, Mary -- Zhang, Dawei -- Dragatsis, Ioannis -- Sudhof, Thomas C -- Shen, Jie -- R01 NS041783/NS/NINDS NIH HHS/ -- R01 NS041783-04/NS/NINDS NIH HHS/ -- R01 NS041783-08/NS/NINDS NIH HHS/ -- R01NS041783/NS/NINDS NIH HHS/ -- England -- Nature. 2009 Jul 30;460(7255):632-6. doi: 10.1038/nature08177.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Neurologic Diseases, Brigham & Women's Hospital, Program in Neuroscience, Harvard Medical School, Boston, Massachusetts 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19641596" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/metabolism ; Cells, Cultured ; *Gene Expression Regulation ; Glutamic Acid/metabolism ; Hippocampus/cytology/metabolism ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Mice, Transgenic ; Neurons/*metabolism ; Neurotransmitter Agents/*metabolism ; Presenilins/*genetics/*metabolism ; Presynaptic Terminals/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 4
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    Old-growth forests can accumulate carbon in soils (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-12-02
    Description: Old-growth forests have traditionally been considered negligible as carbon sinks because carbon uptake has been thought to be balanced by respiration. We show that the top 20-centimeter soil layer in preserved old-growth forests in southern China accumulated atmospheric carbon at an unexpectedly high average rate of 0.61 megagrams of carbon hectare-1 year-1 from 1979 to 2003. This study suggests that the carbon cycle processes in the belowground system of these forests are changing in response to the changing environment. The result directly challenges the prevailing belief in ecosystem ecology regarding carbon budget in old-growth forests and supports the establishment of a new, nonequilibrium conceptual framework to study soil carbon dynamics.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhou, Guoyi -- Liu, Shuguang -- Li, Zhian -- Zhang, Deqiang -- Tang, Xuli -- Zhou, Chuanyan -- Yan, Junhua -- Mo, Jiangming -- New York, N.Y. -- Science. 2006 Dec 1;314(5804):1417.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China. gyzhou@scib.ac.cn〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17138894" target="_blank"〉PubMed〈/a〉
    Keywords: Carbon/*analysis/metabolism ; China ; *Ecosystem ; Soil/*analysis ; Trees/*growth & development
    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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    A test of climate, sun, and culture relationships from an 1810-year Chinese cave record (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-11-08
    Description: A record from Wanxiang Cave, China, characterizes Asian Monsoon (AM) history over the past 1810 years. The summer monsoon correlates with solar variability, Northern Hemisphere and Chinese temperature, Alpine glacial retreat, and Chinese cultural changes. It was generally strong during Europe's Medieval Warm Period and weak during Europe's Little Ice Age, as well as during the final decades of the Tang, Yuan, and Ming Dynasties, all times that were characterized by popular unrest. It was strong during the first several decades of the Northern Song Dynasty, a period of increased rice cultivation and dramatic population increase. The sign of the correlation between the AM and temperature switches around 1960, suggesting that anthropogenic forcing superseded natural forcing as the major driver of AM changes in the late 20th century.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Pingzhong -- Cheng, Hai -- Edwards, R Lawrence -- Chen, Fahu -- Wang, Yongjin -- Yang, Xunlin -- Liu, Jian -- Tan, Ming -- Wang, Xianfeng -- Liu, Jinghua -- An, Chunlei -- Dai, Zhibo -- Zhou, Jing -- Zhang, Dezhong -- Jia, Jihong -- Jin, Liya -- Johnson, Kathleen R -- New York, N.Y. -- Science. 2008 Nov 7;322(5903):940-2. doi: 10.1126/science.1163965.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environment Sciences, Lanzhou University, Lanzhou 730000, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18988851" 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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  • 6
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    TLR11 activation of dendritic cells by a protozoan profilin-like protein (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-04-30
    Description: Mammalian Toll-like receptors (TLRs) play an important role in the innate recognition of pathogens by dendritic cells (DCs). Although TLRs are clearly involved in the detection of bacteria and viruses, relatively little is known about their function in the innate response to eukaryotic microorganisms. Here we identify a profilin-like molecule from the protozoan parasite Toxoplasma gondii that generates a potent interleukin-12 (IL-12) response in murine DCs that is dependent on myeloid differentiation factor 88. T. gondii profilin activates DCs through TLR11 and is the first chemically defined ligand for this TLR. Moreover, TLR11 is required in vivo for parasite-induced IL-12 production and optimal resistance to infection, thereby establishing a role for the receptor in host recognition of protozoan pathogens.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yarovinsky, Felix -- Zhang, Dekai -- Andersen, John F -- Bannenberg, Gerard L -- Serhan, Charles N -- Hayden, Matthew S -- Hieny, Sara -- Sutterwala, Fayyaz S -- Flavell, Richard A -- Ghosh, Sankar -- Sher, Alan -- 1R01AI045806-01A1/AI/NIAID NIH HHS/ -- AI05093/AI/NIAID NIH HHS/ -- R01-AI59440/AI/NIAID NIH HHS/ -- R01-GM38765/GM/NIGMS NIH HHS/ -- Intramural NIH HHS/ -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2005 Jun 10;308(5728):1626-9. Epub 2005 Apr 28.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Immunobiology Section, Laboratory of Parasitic Diseases; National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA. fyarovinsky@niaid.nih.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15860593" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing ; Amino Acid Motifs ; Amino Acid Sequence ; Animals ; Antigens, Differentiation/genetics/metabolism ; Contractile Proteins/chemistry/*immunology/isolation & purification/metabolism ; Dendritic Cells/*immunology ; Genes, Protozoan ; Immunity, Innate ; Interleukin-12/biosynthesis/blood ; Ligands ; Membrane Glycoproteins/metabolism ; Mice ; Mice, Inbred C57BL ; Microfilament Proteins/chemistry/*immunology/isolation & purification/metabolism ; Molecular Sequence Data ; Myeloid Differentiation Factor 88 ; NF-kappa B/metabolism ; Profilins ; Protozoan Proteins/chemistry/*immunology/isolation & purification/metabolism ; Receptors, Cell Surface/*metabolism ; Receptors, Immunologic/genetics/metabolism ; Recombinant Proteins/immunology ; Signal Transduction ; Toll-Like Receptors ; Toxoplasma/genetics/*immunology ; Toxoplasmosis, Animal/*immunology ; Transfection
    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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    Abraxas and RAP80 form a BRCA1 protein complex required for the DNA damage response (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-05-26
    Description: The BRCT repeats of the breast and ovarian cancer predisposition protein BRCA1 are essential for tumor suppression. Phosphopeptide affinity proteomic analysis identified a protein, Abraxas, that directly binds the BRCA1 BRCT repeats through a phospho-Ser-X-X-Phe motif. Abraxas binds BRCA1 to the mutual exclusion of BACH1 (BRCA1-associated C-terminal helicase) and CtIP (CtBP-interacting protein), forming a third type of BRCA1 complex. Abraxas recruits the ubiquitin-interacting motif (UIM)-containing protein RAP80 to BRCA1. Both Abraxas and RAP80 were required for DNA damage resistance, G(2)-M checkpoint control, and DNA repair. RAP80 was required for optimal accumulation of BRCA1 on damaged DNA (foci) in response to ionizing radiation, and the UIM domains alone were capable of foci formation. The RAP80-Abraxas complex may help recruit BRCA1 to DNA damage sites in part through recognition of ubiquitinated proteins.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3573690/" 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/PMC3573690/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Bin -- Matsuoka, Shuhei -- Ballif, Bryan A -- Zhang, Dong -- Smogorzewska, Agata -- Gygi, Steven P -- Elledge, Stephen J -- 1KO1, CA116275-01/CA/NCI NIH HHS/ -- 1U19A1067751/PHS HHS/ -- T32CA09216/CA/NCI NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2007 May 25;316(5828):1194-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Center for Genetics and Genomics, Brigham and Women's Hospital, Howard Hughes Medical Institute, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17525340" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; BRCA1 Protein/*physiology ; Carrier Proteins/*physiology ; Cell Line, Tumor ; *DNA Damage ; *DNA Repair ; HeLa Cells ; Humans ; Mass Spectrometry ; Molecular Sequence Data ; Nuclear Proteins/*physiology ; Protein Binding ; Protein Structure, Tertiary
    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
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    Divergence of transcription factor binding sites across related yeast species (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-08-11
    Description: Characterization of interspecies differences in gene regulation is crucial for understanding the molecular basis of both phenotypic diversity and evolution. By means of chromatin immunoprecipitation and DNA microarray analysis, the divergence in the binding sites of the pseudohyphal regulators Ste12 and Tec1 was determined in the yeasts Saccharomyces cerevisiae, S. mikatae, and S. bayanus under pseudohyphal conditions. We have shown that most of these sites have diverged across these species, far exceeding the interspecies variation in orthologous genes. A group of Ste12 targets was shown to be bound only in S. mikatae and S. bayanus under pseudohyphal conditions. Many of these genes are targets of Ste12 during mating in S. cerevisiae, indicating that specialization between the two pathways has occurred in this species. Transcription factor binding sites have therefore diverged substantially faster than ortholog content. Thus, gene regulation resulting from transcription factor binding is likely to be a major cause of divergence between related species.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Borneman, Anthony R -- Gianoulis, Tara A -- Zhang, Zhengdong D -- Yu, Haiyuan -- Rozowsky, Joel -- Seringhaus, Michael R -- Wang, Lu Yong -- Gerstein, Mark -- Snyder, Michael -- New York, N.Y. -- Science. 2007 Aug 10;317(5839):815-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT 06511, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17690298" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Binding Sites ; Candida albicans/genetics/growth & development/metabolism ; Chromatin Immunoprecipitation ; DNA-Binding Proteins/genetics/metabolism ; *Evolution, Molecular ; Fungal Proteins/genetics/*metabolism ; Gene Expression Regulation, Fungal ; Gene Regulatory Networks ; Genes, Fungal ; Oligonucleotide Array Sequence Analysis ; *Regulatory Sequences, Nucleic Acid ; Saccharomyces/*genetics/growth & development/metabolism ; Saccharomyces cerevisiae/*genetics/growth & development/metabolism ; Saccharomyces cerevisiae Proteins/genetics/metabolism ; Transcription Factors/genetics/*metabolism
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
    Electronic Resource
    Electronic Resource
    Au-Si Eutectic Wafer Bonding Mechanism Analysis and a Intensity Model (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 121-123 (Mar. 2007), p. 575-578 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Notes: Our experiments highlight that gold-silicon eutectics are fairly influenced by the thicknessof Au layer and the wastage of Si, i.e. the wasting thickness of the silicon die. In the experiments, abonding intensity testing method, called Press-arm model, is used to verify the Au-Si eutecticsbonding strength. Through the intensity value of the bonding interface, we analyze the eutecticscondition of the bonding interface at different temperatures and discuss the optimum procession ofthe wafer capsulation
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/23/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.121-123.575.pdf
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  • 10
    Electronic Resource
    Electronic Resource
    Composition Optimization of Zirconia Toughened Alumina for Dental Ceramics (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 330-332 (Feb. 2007), p. 1369-1372 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The aim of this study was to optimize sintering aids and processing parameters forzirconia toughened alumina (ZTA) nano-ceramics with optimal properties as dental ceramics.Additive agents (TiO2, MgO, SiO2), dry pressing forces and sintering temperatures are veryimportant for preparation of structural ceramics. In the present study, density and Vickers hardnessmeasurement, SEM, and XRD analysis were employed to investigate the effects of these on thefinal products. The relevant results showed that higher pressing force led to an increase in thedensity and Vickers hardness of the sintered ceramics. Among the four groups of sintered nanoceramicswith different ratios of alumina and zirconia, and combinations of additive agents, the bestdensification was achieved in the sample from Group 2# containing 1.05wt% MgO after sintered at1450ºC, as indicated by SEM observation. XRD analysis confirmed the formation of MgAl2O4 as anintermediate compound. The existence of TiO2 in the additive agents was in favor of the acquisitionof high densification. The measured values for the density and Vickers hardness indicated that thesintered ZTA nano-ceramics would be a potential material for dental prosthetic applications
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.330-332.1369.pdf
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