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| - | {{STRUCTURE_4fx3| PDB=4fx3 | SCENE= }}
| + | ==Crystal Structure of the CDK2/Cyclin A complex with oxindole inhibitor== |
| - | ===Crystal Structure of the CDK2/Cyclin A complex with oxindole inhibitor===
| + | <StructureSection load='4fx3' size='340' side='right' caption='[[4fx3]], [[Resolution|resolution]] 2.75Å' scene=''> |
| | + | == Structural highlights == |
| | + | <table><tr><td colspan='2'>[[4fx3]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4FX3 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4FX3 FirstGlance]. <br> |
| | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=60K:(3Z)-2-OXO-3-[2-(4-SULFAMOYLPHENYL)HYDRAZINYLIDENE]-2,3-DIHYDRO-1H-INDOLE-5-CARBOXYLIC+ACID'>60K</scene>, <scene name='pdbligand=DTT:2,3-DIHYDROXY-1,4-DITHIOBUTANE'>DTT</scene></td></tr> |
| | + | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4ek3|4ek3]], [[4ek4|4ek4]], [[4ek5|4ek5]], [[4ek6|4ek6]], [[4ek8|4ek8]], [[4fkg|4fkg]], [[4fki|4fki]], [[4fkj|4fkj]], [[4fkl|4fkl]], [[4fko|4fko]], [[4fkp|4fkp]], [[4fkq|4fkq]], [[4fkr|4fkr]], [[4fks|4fks]], [[4fkt|4fkt]], [[4fku|4fku]], [[4fkv|4fkv]], [[4fkw|4fkw]]</td></tr> |
| | + | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CDK2, CDKN2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]), CCN1, CCNA, CCNA2, Cyclin A ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr> |
| | + | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Cyclin-dependent_kinase Cyclin-dependent kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.11.22 2.7.11.22] </span></td></tr> |
| | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4fx3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4fx3 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4fx3 RCSB], [http://www.ebi.ac.uk/pdbsum/4fx3 PDBsum]</span></td></tr> |
| | + | </table> |
| | | | |
| - | ==Function== | + | ==See Also== |
| - | [[http://www.uniprot.org/uniprot/CDK2_HUMAN CDK2_HUMAN]] Serine/threonine-protein kinase involved in the control of the cell cycle; essential for meiosis, but dispensable for mitosis. Phosphorylates CTNNB1, USP37, p53/TP53, NPM1, CDK7, RB1, BRCA2, MYC, NPAT, EZH2. Interacts with cyclins A, B1, B3, D, or E. Triggers duplication of centrosomes and DNA. Acts at the G1-S transition to promote the E2F transcriptional program and the initiation of DNA synthesis, and modulates G2 progression; controls the timing of entry into mitosis/meiosis by controlling the subsequent activation of cyclin B/CDK1 by phosphorylation, and coordinates the activation of cyclin B/CDK1 at the centrosome and in the nucleus. Crucial role in orchestrating a fine balance between cellular proliferation, cell death, and DNA repair in human embryonic stem cells (hESCs). Activity of CDK2 is maximal during S phase and G2; activated by interaction with cyclin E during the early stages of DNA synthesis to permit G1-S transition, and subsequently activated by cyclin A2 (cyclin A1 in germ cells) during the late stages of DNA replication to drive the transition from S phase to mitosis, the G2 phase. EZH2 phosphorylation promotes H3K27me3 maintenance and epigenetic gene silencing. Phosphorylates CABLES1 (By similarity). Cyclin E/CDK2 prevents oxidative stress-mediated Ras-induced senescence by phosphorylating MYC. Involved in G1-S phase DNA damage checkpoint that prevents cells with damaged DNA from initiating mitosis; regulates homologous recombination-dependent repair by phosphorylating BRCA2, this phosphorylation is low in S phase when recombination is active, but increases as cells progress towards mitosis. In response to DNA damage, double-strand break repair by homologous recombination a reduction of CDK2-mediated BRCA2 phosphorylation. Phosphorylation of RB1 disturbs its interaction with E2F1. NPM1 phosphorylation by cyclin E/CDK2 promotes its dissociates from unduplicated centrosomes, thus initiating centrosome duplication. Cyclin E/CDK2-mediated phosphorylation of NPAT at G1-S transition and until prophase stimulates the NPAT-mediated activation of histone gene transcription during S phase. Required for vitamin D-mediated growth inhibition by being itself inactivated. Involved in the nitric oxide- (NO) mediated signaling in a nitrosylation/activation-dependent manner. USP37 is activated by phosphorylation and thus triggers G1-S transition. CTNNB1 phosphorylation regulates insulin internalization.<ref>PMID:10499802</ref> <ref>PMID:11051553</ref> <ref>PMID:10995386</ref> <ref>PMID:10995387</ref> <ref>PMID:10884347</ref> <ref>PMID:11113184</ref> <ref>PMID:15800615</ref> <ref>PMID:18372919</ref> <ref>PMID:20147522</ref> <ref>PMID:20079829</ref> <ref>PMID:20935635</ref> <ref>PMID:20195506</ref> <ref>PMID:19966300</ref> <ref>PMID:21262353</ref> <ref>PMID:21596315</ref> <ref>PMID:21319273</ref> <ref>PMID:17495531</ref> [[http://www.uniprot.org/uniprot/CCNA2_HUMAN CCNA2_HUMAN]] Essential for the control of the cell cycle at the G1/S (start) and the G2/M (mitosis) transitions. | + | *[[Cell division protein kinase 2|Cell division protein kinase 2]] |
| - | | + | *[[Cyclin|Cyclin]] |
| - | ==About this Structure==
| + | __TOC__ |
| - | [[4fx3]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4FX3 OCA]. | + | </StructureSection> |
| - | | + | |
| - | ==Reference==
| + | |
| - | <references group="xtra"/><references/>
| + | |
| | [[Category: Cyclin-dependent kinase]] | | [[Category: Cyclin-dependent kinase]] |
| | [[Category: Homo sapiens]] | | [[Category: Homo sapiens]] |
| - | [[Category: Kang, Y N.]] | + | [[Category: Kang, Y N]] |
| - | [[Category: Stuckey, J A.]] | + | [[Category: Stuckey, J A]] |
| | [[Category: Transferase-transferase inhibitor complex]] | | [[Category: Transferase-transferase inhibitor complex]] |
