PubMed:21357691 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PubMed/sourceid/21357691","sourcedb":"PubMed","sourceid":"21357691","source_url":"http://www.ncbi.nlm.nih.gov/pubmed/21357691","text":"Vipirinin, a coumarin-based HIV-1 Vpr inhibitor, interacts with a hydrophobic region of VPR.\nThe human immunodeficiency virus 1 (HIV-1) viral protein R (Vpr) is an accessory protein that has been shown to have multiple roles in HIV-1 pathogenesis. By screening chemical libraries in the RIKEN Natural Products Depository, we identified a 3-phenyl coumarin-based compound that inhibited the cell cycle arrest activity of Vpr in yeast and Vpr-dependent viral infection of human macrophages. We determined its minimal pharmacophore through a structure-activity relationship study and produced more potent derivatives. We detected direct binding, and by assaying a panel of Vpr mutants, we found the hydrophobic region about residues Glu-25 and Gln-65 to be potentially involved in the binding of the inhibitor. Our findings exposed a targeting site on Vpr and delineated a convenient approach to explore other targeting sites on the protein using small molecule inhibitors as bioprobes.","tracks":[{"project":"Allie","denotations":[{"id":"SS1_21357691_1_0","span":{"begin":97,"end":127},"obj":"expanded"},{"id":"SS2_21357691_1_0","span":{"begin":129,"end":134},"obj":"abbr"},{"id":"SS1_21357691_1_1","span":{"begin":136,"end":151},"obj":"expanded"},{"id":"SS2_21357691_1_1","span":{"begin":153,"end":156},"obj":"abbr"}],"relations":[{"id":"AE1_21357691_1_0","pred":"abbreviatedTo","subj":"SS1_21357691_1_0","obj":"SS2_21357691_1_0"},{"id":"AE1_21357691_1_1","pred":"abbreviatedTo","subj":"SS1_21357691_1_1","obj":"SS2_21357691_1_1"}],"attributes":[{"subj":"SS1_21357691_1_0","pred":"source","obj":"Allie"},{"subj":"SS2_21357691_1_0","pred":"source","obj":"Allie"},{"subj":"SS1_21357691_1_1","pred":"source","obj":"Allie"},{"subj":"SS2_21357691_1_1","pred":"source","obj":"Allie"}]},{"project":"PubmedHPO","denotations":[{"id":"T1","span":{"begin":103,"end":119},"obj":"HP_0002721"}],"attributes":[{"subj":"T1","pred":"source","obj":"PubmedHPO"}]},{"project":"sentences","denotations":[{"id":"T1","span":{"begin":0,"end":92},"obj":"Sentence"},{"id":"T2","span":{"begin":93,"end":247},"obj":"Sentence"},{"id":"T3","span":{"begin":248,"end":488},"obj":"Sentence"},{"id":"T4","span":{"begin":489,"end":614},"obj":"Sentence"},{"id":"T5","span":{"begin":615,"end":807},"obj":"Sentence"},{"id":"T6","span":{"begin":808,"end":983},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"attributes":[{"subj":"T1","pred":"source","obj":"sentences"},{"subj":"T2","pred":"source","obj":"sentences"},{"subj":"T3","pred":"source","obj":"sentences"},{"subj":"T4","pred":"source","obj":"sentences"},{"subj":"T5","pred":"source","obj":"sentences"},{"subj":"T6","pred":"source","obj":"sentences"}]},{"project":"NCBITAXON","denotations":[{"id":"T1","span":{"begin":97,"end":127},"obj":"OrganismTaxon"},{"id":"T2","span":{"begin":470,"end":475},"obj":"OrganismTaxon"}],"attributes":[{"id":"A1","pred":"db_id","subj":"T1","obj":"11676"},{"id":"A2","pred":"db_id","subj":"T2","obj":"9606"},{"subj":"T1","pred":"source","obj":"NCBITAXON"},{"subj":"T2","pred":"source","obj":"NCBITAXON"}]},{"project":"mondo_disease","denotations":[{"id":"T1","span":{"begin":103,"end":119},"obj":"Disease"},{"id":"T2","span":{"begin":451,"end":466},"obj":"Disease"}],"attributes":[{"id":"A1","pred":"mondo_id","subj":"T1","obj":"http://purl.obolibrary.org/obo/MONDO_0021094"},{"id":"A2","pred":"mondo_id","subj":"T2","obj":"http://purl.obolibrary.org/obo/MONDO_0005108"},{"subj":"T1","pred":"source","obj":"mondo_disease"},{"subj":"T2","pred":"source","obj":"mondo_disease"}]},{"project":"Anatomy-UBERON","denotations":[{"id":"T1","span":{"begin":390,"end":400},"obj":"Body_part"},{"id":"T2","span":{"begin":476,"end":487},"obj":"Body_part"}],"attributes":[{"id":"A1","pred":"uberon_id","subj":"T1","obj":"http://purl.obolibrary.org/obo/UBERON_2000098"},{"id":"A2","pred":"uberon_id","subj":"T2","obj":"http://purl.obolibrary.org/obo/CL_0000235"},{"subj":"T1","pred":"source","obj":"Anatomy-UBERON"},{"subj":"T2","pred":"source","obj":"Anatomy-UBERON"}]},{"project":"HP-phenotype","denotations":[{"id":"T1","span":{"begin":103,"end":119},"obj":"Phenotype"}],"attributes":[{"id":"A1","pred":"hp_id","subj":"T1","obj":"HP:0002721"},{"subj":"T1","pred":"source","obj":"HP-phenotype"}],"namespaces":[{"prefix":"HP","uri":"http://purl.obolibrary.org/obo/HP_"}]},{"project":"CL-cell","denotations":[{"id":"T1","span":{"begin":476,"end":487},"obj":"Cell"}],"attributes":[{"id":"A1","pred":"cl_id","subj":"T1","obj":"http://purl.obolibrary.org/obo/CL:0000235"},{"id":"A2","pred":"cl_id","subj":"T1","obj":"http://purl.obolibrary.org/obo/CL:0000394"},{"subj":"T1","pred":"source","obj":"CL-cell"}]}],"config":{"attribute types":[{"pred":"source","value type":"selection","values":[{"id":"Allie","color":"#c2ec93","default":true},{"id":"PubmedHPO","color":"#ec93dc"},{"id":"sentences","color":"#93ece1"},{"id":"NCBITAXON","color":"#ecc793"},{"id":"mondo_disease","color":"#ad93ec"},{"id":"Anatomy-UBERON","color":"#93ec93"},{"id":"HP-phenotype","color":"#ec93ac"},{"id":"CL-cell","color":"#93c6ec"}]}]}}