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  • 1
    Publication Date: 2015-02-25
    Description: V(D)J recombination in the vertebrate immune system generates a highly diverse population of immunoglobulins and T-cell receptors by combinatorial joining of segments of coding DNA. The RAG1-RAG2 protein complex initiates this site-specific recombination by cutting DNA at specific sites flanking the coding segments. Here we report the crystal structure of the mouse RAG1-RAG2 complex at 3.2 A resolution. The 230-kilodalton RAG1-RAG2 heterotetramer is 'Y-shaped', with the amino-terminal domains of the two RAG1 chains forming an intertwined stalk. Each RAG1-RAG2 heterodimer composes one arm of the 'Y', with the active site in the middle and RAG2 at its tip. The RAG1-RAG2 structure rationalizes more than 60 mutations identified in immunodeficient patients, as well as a large body of genetic and biochemical data. The architectural similarity between RAG1 and the hairpin-forming transposases Hermes and Tn5 suggests the evolutionary conservation of these DNA rearrangements.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4342785/" 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/PMC4342785/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, Min-Sung -- Lapkouski, Mikalai -- Yang, Wei -- Gellert, Martin -- Z01 DK036147-01/Intramural NIH HHS/ -- Z01 DK036147-02/Intramural NIH HHS/ -- Z01 DK036167-01/Intramural NIH HHS/ -- Z01 DK036167-02/Intramural NIH HHS/ -- ZIA DK036147-03/Intramural NIH HHS/ -- ZIA DK036147-04/Intramural NIH HHS/ -- ZIA DK036147-05/Intramural NIH HHS/ -- ZIA DK036147-06/Intramural NIH HHS/ -- ZIA DK036147-07/Intramural NIH HHS/ -- ZIA DK036147-08/Intramural NIH HHS/ -- ZIA DK036167-03/Intramural NIH HHS/ -- ZIA DK036167-04/Intramural NIH HHS/ -- ZIA DK036167-05/Intramural NIH HHS/ -- ZIA DK036167-06/Intramural NIH HHS/ -- ZIA DK036167-07/Intramural NIH HHS/ -- England -- Nature. 2015 Feb 26;518(7540):507-11. doi: 10.1038/nature14174. Epub 2015 Feb 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Biology, NIDDK, NIH, Bethesda, Maryland 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25707801" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Binding Sites ; Crystallography, X-Ray ; DNA/chemistry/metabolism ; DNA-Binding Proteins/*chemistry/genetics/metabolism ; Homeodomain Proteins/*chemistry/genetics/metabolism ; Humans ; Mice ; Models, Molecular ; Mutation/genetics ; Protein Multimerization ; Protein Structure, Quaternary ; Severe Combined Immunodeficiency/genetics ; Transposases/chemistry ; VDJ Recombinases/*chemistry/metabolism ; X-Linked Combined Immunodeficiency Diseases/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2011-11-08
    Description: The embryonic pyruvate kinase M2 (PKM2) isoform is highly expressed in human cancer. In contrast to the established role of PKM2 in aerobic glycolysis or the Warburg effect, its non-metabolic functions remain elusive. Here we demonstrate, in human cancer cells, that epidermal growth factor receptor (EGFR) activation induces translocation of PKM2, but not PKM1, into the nucleus, where K433 of PKM2 binds to c-Src-phosphorylated Y333 of beta-catenin. This interaction is required for both proteins to be recruited to the CCND1 promoter, leading to HDAC3 removal from the promoter, histone H3 acetylation and cyclin D1 expression. PKM2-dependent beta-catenin transactivation is instrumental in EGFR-promoted tumour cell proliferation and brain tumour development. In addition, positive correlations have been identified between c-Src activity, beta-catenin Y333 phosphorylation and PKM2 nuclear accumulation in human glioblastoma specimens. Furthermore, levels of beta-catenin phosphorylation and nuclear PKM2 have been correlated with grades of glioma malignancy and prognosis. These findings reveal that EGF induces beta-catenin transactivation via a mechanism distinct from that induced by Wnt/Wingless and highlight the essential non-metabolic functions of PKM2 in EGFR-promoted beta-catenin transactivation, cell proliferation and tumorigenesis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3235705/" 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/PMC3235705/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yang, Weiwei -- Xia, Yan -- Ji, Haitao -- Zheng, Yanhua -- Liang, Ji -- Huang, Wenhua -- Gao, Xiang -- Aldape, Kenneth -- Lu, Zhimin -- 5 P50 CA127001-03/CA/NCI NIH HHS/ -- 5R01CA109035/CA/NCI NIH HHS/ -- CA16672/CA/NCI NIH HHS/ -- R01 CA109035/CA/NCI NIH HHS/ -- R01 CA109035-05/CA/NCI NIH HHS/ -- England -- Nature. 2011 Dec 1;480(7375):118-22. doi: 10.1038/nature10598.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Brain Tumor Center and Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22056988" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line, Tumor ; Cyclin D1/metabolism ; *Gene Expression Regulation, Neoplastic ; HEK293 Cells ; Humans ; Mice ; NIH 3T3 Cells ; Neoplasms/physiopathology ; Nuclear Proteins/*metabolism ; Phosphorylation ; Protein Binding ; Protein Transport ; Protein-Tyrosine Kinases/metabolism ; Pyruvate Kinase/*metabolism ; Receptor, Epidermal Growth Factor/*metabolism ; beta Catenin/*metabolism ; src-Family Kinases
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 2012-03-31
    Description: Clinical responses to anticancer therapies are often restricted to a subset of patients. In some cases, mutated cancer genes are potent biomarkers for responses to targeted agents. Here, to uncover new biomarkers of sensitivity and resistance to cancer therapeutics, we screened a panel of several hundred cancer cell lines--which represent much of the tissue-type and genetic diversity of human cancers--with 130 drugs under clinical and preclinical investigation. In aggregate, we found that mutated cancer genes were associated with cellular response to most currently available cancer drugs. Classic oncogene addiction paradigms were modified by additional tissue-specific or expression biomarkers, and some frequently mutated genes were associated with sensitivity to a broad range of therapeutic agents. Unexpected relationships were revealed, including the marked sensitivity of Ewing's sarcoma cells harbouring the EWS (also known as EWSR1)-FLI1 gene translocation to poly(ADP-ribose) polymerase (PARP) inhibitors. By linking drug activity to the functional complexity of cancer genomes, systematic pharmacogenomic profiling in cancer cell lines provides a powerful biomarker discovery platform to guide rational cancer therapeutic strategies.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3349233/" 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/PMC3349233/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Garnett, Mathew J -- Edelman, Elena J -- Heidorn, Sonja J -- Greenman, Chris D -- Dastur, Anahita -- Lau, King Wai -- Greninger, Patricia -- Thompson, I Richard -- Luo, Xi -- Soares, Jorge -- Liu, Qingsong -- Iorio, Francesco -- Surdez, Didier -- Chen, Li -- Milano, Randy J -- Bignell, Graham R -- Tam, Ah T -- Davies, Helen -- Stevenson, Jesse A -- Barthorpe, Syd -- Lutz, Stephen R -- Kogera, Fiona -- Lawrence, Karl -- McLaren-Douglas, Anne -- Mitropoulos, Xeni -- Mironenko, Tatiana -- Thi, Helen -- Richardson, Laura -- Zhou, Wenjun -- Jewitt, Frances -- Zhang, Tinghu -- O'Brien, Patrick -- Boisvert, Jessica L -- Price, Stacey -- Hur, Wooyoung -- Yang, Wanjuan -- Deng, Xianming -- Butler, Adam -- Choi, Hwan Geun -- Chang, Jae Won -- Baselga, Jose -- Stamenkovic, Ivan -- Engelman, Jeffrey A -- Sharma, Sreenath V -- Delattre, Olivier -- Saez-Rodriguez, Julio -- Gray, Nathanael S -- Settleman, Jeffrey -- Futreal, P Andrew -- Haber, Daniel A -- Stratton, Michael R -- Ramaswamy, Sridhar -- McDermott, Ultan -- Benes, Cyril H -- 086357/Wellcome Trust/United Kingdom -- 1U54HG006097-01/HG/NHGRI NIH HHS/ -- P41GM079575-02/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2012 Mar 28;483(7391):570-5. doi: 10.1038/nature11005.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cancer Genome Project, Wellcome Trust Sanger Institute, Hinxton CB10 1SA, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22460902" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Line, Tumor ; Cell Survival/drug effects ; Drug Resistance, Neoplasm/drug effects/*genetics ; *Drug Screening Assays, Antitumor ; Gene Expression Regulation, Neoplastic/genetics ; Genes, Neoplasm/*genetics ; Genetic Markers/*genetics ; Genome, Human/*genetics ; Genomics ; Humans ; Indoles/pharmacology ; Neoplasms/*drug therapy/*genetics/pathology ; Oncogene Proteins, Fusion/genetics ; Pharmacogenetics ; Phthalazines/pharmacology ; Piperazines/pharmacology ; Poly(ADP-ribose) Polymerase Inhibitors ; Proto-Oncogene Protein c-fli-1/genetics ; RNA-Binding Protein EWS/genetics ; Sarcoma, Ewing/drug therapy/genetics/pathology
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 4
    Publication Date: 2010-06-26
    Description: The variant form of the human syndrome xeroderma pigmentosum (XPV) is caused by a deficiency in DNA polymerase eta (Poleta), a DNA polymerase that enables replication through ultraviolet-induced pyrimidine dimers. Here we report high-resolution crystal structures of human Poleta at four consecutive steps during DNA synthesis through cis-syn cyclobutane thymine dimers. Poleta acts like a 'molecular splint' to stabilize damaged DNA in a normal B-form conformation. An enlarged active site accommodates the thymine dimer with excellent stereochemistry for two-metal ion catalysis. Two residues conserved among Poleta orthologues form specific hydrogen bonds with the lesion and the incoming nucleotide to assist translesion synthesis. On the basis of the structures, eight Poleta missense mutations causing XPV can be rationalized as undermining the molecular splint or perturbing the active-site alignment. The structures also provide an insight into the role of Poleta in replicating through D loop and DNA fragile sites.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2899710/" 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/PMC2899710/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Biertumpfel, Christian -- Zhao, Ye -- Kondo, Yuji -- Ramon-Maiques, Santiago -- Gregory, Mark -- Lee, Jae Young -- Masutani, Chikahide -- Lehmann, Alan R -- Hanaoka, Fumio -- Yang, Wei -- G0501450/Medical Research Council/United Kingdom -- Z01 DK036146-01/Intramural NIH HHS/ -- ZIA DK036146-03/Intramural NIH HHS/ -- ZIA DK036146-04/Intramural NIH HHS/ -- ZIA DK036146-05/Intramural NIH HHS/ -- England -- Nature. 2010 Jun 24;465(7301):1044-8. doi: 10.1038/nature09196.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Biology, NIDDK, NIH, 9000 Rockville Pike, Building 5, Room B103, Bethesda, Maryland 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20577208" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/analogs & derivatives/metabolism ; Base Sequence ; Biocatalysis ; Catalytic Domain ; Crystallography, X-Ray ; DNA/chemistry/metabolism ; DNA Damage ; DNA-Directed DNA Polymerase/*chemistry/genetics/*metabolism ; Humans ; Kinetics ; Models, Molecular ; Mutation, Missense/genetics ; Pyrimidine Dimers/genetics/metabolism ; Structure-Activity Relationship ; Xeroderma Pigmentosum/enzymology/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 2015-12-15
    Description: Release of promoter-proximal paused RNA polymerase II (Pol II) during early elongation is a critical step in transcriptional regulation in metazoan cells. Paused Pol II release is thought to require the kinase activity of cyclin-dependent kinase 9 (CDK9) for the phosphorylation of DRB sensitivity-inducing factor, negative elongation factor, and C-terminal domain (CTD) serine-2 of Pol II. We found that Pol II-associated factor 1 (PAF1) is a critical regulator of paused Pol II release, that positive transcription elongation factor b (P-TEFb) directly regulates the initial recruitment of PAF1 complex (PAF1C) to genes, and that the subsequent recruitment of CDK12 is dependent on PAF1C. These findings reveal cooperativity among P-TEFb, PAF1C, and CDK12 in pausing release and Pol II CTD phosphorylation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yu, Ming -- Yang, Wenjing -- Ni, Ting -- Tang, Zhanyun -- Nakadai, Tomoyoshi -- Zhu, Jun -- Roeder, Robert G -- Intramural NIH HHS/ -- New York, N.Y. -- Science. 2015 Dec 11;350(6266):1383-6. doi: 10.1126/science.aad2338.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Biochemistry and Molecular Biology, The Rockefeller University, New York, NY 10065, USA. ; Systems Biology Center, National Heart, Lung, and Blood Institute, Bethesda, MD 20892, USA. ; State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center of Genetics and Development, School of Life Sciences, Fudan University, Shanghai 200438, P.R. China. ; Laboratory of Biochemistry and Molecular Biology, The Rockefeller University, New York, NY 10065, USA. roeder@rockefeller.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26659056" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Line, Tumor ; Cyclin-Dependent Kinase 9/metabolism ; Cyclin-Dependent Kinases/metabolism ; *Gene Expression Regulation ; Humans ; Nuclear Proteins/genetics/*metabolism ; Phosphorylation ; Positive Transcriptional Elongation Factor B/metabolism ; Promoter Regions, Genetic ; Protein Structure, Tertiary ; RNA Polymerase II/chemistry/genetics/*metabolism ; *Transcription Elongation, Genetic ; Transcription Factors/metabolism
    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
    Publication Date: 2015-08-27
    Description: Phytosulfokine (PSK) is a disulfated pentapeptide that has a ubiquitous role in plant growth and development. PSK is perceived by its receptor PSKR, a leucine-rich repeat receptor kinase (LRR-RK). The mechanisms underlying the recognition of PSK, the activation of PSKR and the identity of the components downstream of the initial binding remain elusive. Here we report the crystal structures of the extracellular LRR domain of PSKR in free, PSK- and co-receptor-bound forms. The structures reveal that PSK interacts mainly with a beta-strand from the island domain of PSKR, forming an anti-beta-sheet. The two sulfate moieties of PSK interact directly with PSKR, sensitizing PSKR recognition of PSK. Supported by biochemical, structural and genetic evidence, PSK binding enhances PSKR heterodimerization with the somatic embryogenesis receptor-like kinases (SERKs). However, PSK is not directly involved in PSKR-SERK interaction but stabilizes PSKR island domain for recruitment of a SERK. Our data reveal the structural basis for PSKR recognition of PSK and allosteric activation of PSKR by PSK, opening up new avenues for the design of PSKR-specific small molecules.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Jizong -- Li, Hongju -- Han, Zhifu -- Zhang, Heqiao -- Wang, Tong -- Lin, Guangzhong -- Chang, Junbiao -- Yang, Weicai -- Chai, Jijie -- England -- Nature. 2015 Sep 10;525(7568):265-8. doi: 10.1038/nature14858. Epub 2015 Aug 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ministry of Education Key Laboratory of Protein Science, Center for Structural Biology, School of Life Sciences, Tsinghua-Peking Joint Center for Life Sciences, Tsinghua University, Beijing 100084, China. ; State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China. ; School of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26308901" target="_blank"〉PubMed〈/a〉
    Keywords: Allosteric Regulation/drug effects ; Arabidopsis/*chemistry ; Arabidopsis Proteins/*agonists/*chemistry/genetics/metabolism ; Crystallography, X-Ray ; Models, Molecular ; Mutation/genetics ; Peptide Hormones/chemistry/metabolism/pharmacology ; Plant Growth Regulators/*chemistry/metabolism/*pharmacology ; Plant Proteins/chemistry/metabolism/pharmacology ; Protein Binding ; Protein Kinases/chemistry/metabolism ; Protein Multimerization/drug effects ; Protein Stability ; Protein Structure, Secondary/drug effects ; Protein Structure, Tertiary/drug effects ; Protein-Serine-Threonine Kinases/chemistry/metabolism ; Receptors, Cell Surface/*agonists/*chemistry/genetics/metabolism ; Substrate Specificity
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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