4x3g: Difference between revisions
No edit summary |
No edit summary |
||
Line 1: | Line 1: | ||
''' | ==Crystal structure of SIAH1 SINA domain in complex with a USP19 peptide== | ||
<StructureSection load='4x3g' size='340' side='right' caption='[[4x3g]], [[Resolution|resolution]] 2.34Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[4x3g]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4X3G OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4X3G FirstGlance]. <br> | |||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | |||
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4c9z|4c9z]]</td></tr> | |||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Ubiquitinyl_hydrolase_1 Ubiquitinyl hydrolase 1], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.19.12 3.4.19.12] </span></td></tr> | |||
[[Category: | <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=4x3g FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4x3g OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4x3g RCSB], [http://www.ebi.ac.uk/pdbsum/4x3g PDBsum]</span></td></tr> | ||
</table> | |||
== Function == | |||
[[http://www.uniprot.org/uniprot/SIAH1_HUMAN SIAH1_HUMAN]] E3 ubiquitin-protein ligase that mediates ubiquitination and subsequent proteasomal degradation of target proteins. E3 ubiquitin ligases accept ubiquitin from an E2 ubiquitin-conjugating enzyme in the form of a thioester and then directly transfers the ubiquitin to targeted substrates. Mediates E3 ubiquitin ligase activity either through direct binding to substrates or by functioning as the essential RING domain subunit of larger E3 complexes. Triggers the ubiquitin-mediated degradation of many substrates, including proteins involved in transcription regulation (ELL2, MYB, POU2AF1, PML and RBBP8), a cell surface receptor (DCC), the cell-surface receptor-type tyrosine kinase FLT3, the cytoplasmic signal transduction molecules (KLF10/TIEG1 and NUMB), an antiapoptotic protein (BAG1), a microtubule motor protein (KIF22), a protein involved in synaptic vesicle function in neurons (SYP), a structural protein (CTNNB1) and SNCAIP. Confers constitutive instability to HIPK2 through proteasomal degradation. It is thereby involved in many cellular processes such as apoptosis, tumor suppression, cell cycle, axon guidance, transcription regulation, spermatogenesis and TNF-alpha signaling. Has some overlapping function with SIAH2. Induces apoptosis in cooperation with PEG3. Upon nitric oxid (NO) generation that follows apoptotic stimulation, interacts with S-nitrosylated GAPDH, mediating the translocation of GAPDH to the nucleus. GAPDH acts as a stabilizer of SIAH1, facilitating the degradation of nuclear proteins.<ref>PMID:9334332</ref> <ref>PMID:9858595</ref> <ref>PMID:11146551</ref> <ref>PMID:10747903</ref> <ref>PMID:11389839</ref> <ref>PMID:11389840</ref> <ref>PMID:11483517</ref> <ref>PMID:11483518</ref> <ref>PMID:11752454</ref> <ref>PMID:12072443</ref> <ref>PMID:14506261</ref> <ref>PMID:14654780</ref> <ref>PMID:14645235</ref> <ref>PMID:15064394</ref> <ref>PMID:18536714</ref> <ref>PMID:19224863</ref> <ref>PMID:20508617</ref> <ref>PMID:22483617</ref> <ref>PMID:16085652</ref> [[http://www.uniprot.org/uniprot/UBP19_HUMAN UBP19_HUMAN]] Deubiquitinating enzyme that regulates the degradation of various proteins. Deubiquitinates and prevents proteasomal degradation of RNF123 which in turn stimulates CDKN1B ubiquitin-dependent degradation thereby playing a role in cell proliferation. Involved in decreased protein synthesis in atrophying skeletal muscle. Modulates transcription of major myofibrillar proteins. Also involved in turnover of endoplasmic-reticulum-associated degradation (ERAD) substrates. Regulates the stability of BIRC2/c-IAP1 and BIRC3/c-IAP2 by preventing their ubiquitination. Required for cells to mount an appropriate response to hypoxia and rescues HIF1A from degradation in a non-catalytic manner. Plays an important role in 17 beta-estradiol (E2)-inhibited myogenesis. Decreases the levels of ubiquitinated proteins during skeletal muscle formation and acts to repress myogenesis. Exhibits a preference towards 'Lys-63'-linked Ubiquitin chains.<ref>PMID:19465887</ref> <ref>PMID:21849505</ref> <ref>PMID:22128162</ref> <ref>PMID:22689415</ref> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Ubiquitinyl hydrolase 1]] | |||
[[Category: Arrowsmith, C H]] | |||
[[Category: Bountra, C]] | |||
[[Category: Dong, A]] | [[Category: Dong, A]] | ||
[[Category: Edwards, A M]] | |||
[[Category: Huang, X]] | |||
[[Category: Li, Y]] | [[Category: Li, Y]] | ||
[[Category: | [[Category: Structural genomic]] | ||
[[Category: Tong, Y]] | [[Category: Tong, Y]] | ||
[[Category: | [[Category: Walker, J R]] | ||
[[Category: Zhang, Q]] | [[Category: Zhang, Q]] | ||
[[Category: Hydrolase]] | |||
[[Category: Ligase]] | |||
[[Category: Protein-peptide complex]] | |||
[[Category: Sgc]] | |||
[[Category: Ubiquitin specific protease]] | |||
[[Category: Ubiquitin-protein ligase]] |
Revision as of 17:56, 31 December 2014
Crystal structure of SIAH1 SINA domain in complex with a USP19 peptideCrystal structure of SIAH1 SINA domain in complex with a USP19 peptide
Structural highlights
Function[SIAH1_HUMAN] E3 ubiquitin-protein ligase that mediates ubiquitination and subsequent proteasomal degradation of target proteins. E3 ubiquitin ligases accept ubiquitin from an E2 ubiquitin-conjugating enzyme in the form of a thioester and then directly transfers the ubiquitin to targeted substrates. Mediates E3 ubiquitin ligase activity either through direct binding to substrates or by functioning as the essential RING domain subunit of larger E3 complexes. Triggers the ubiquitin-mediated degradation of many substrates, including proteins involved in transcription regulation (ELL2, MYB, POU2AF1, PML and RBBP8), a cell surface receptor (DCC), the cell-surface receptor-type tyrosine kinase FLT3, the cytoplasmic signal transduction molecules (KLF10/TIEG1 and NUMB), an antiapoptotic protein (BAG1), a microtubule motor protein (KIF22), a protein involved in synaptic vesicle function in neurons (SYP), a structural protein (CTNNB1) and SNCAIP. Confers constitutive instability to HIPK2 through proteasomal degradation. It is thereby involved in many cellular processes such as apoptosis, tumor suppression, cell cycle, axon guidance, transcription regulation, spermatogenesis and TNF-alpha signaling. Has some overlapping function with SIAH2. Induces apoptosis in cooperation with PEG3. Upon nitric oxid (NO) generation that follows apoptotic stimulation, interacts with S-nitrosylated GAPDH, mediating the translocation of GAPDH to the nucleus. GAPDH acts as a stabilizer of SIAH1, facilitating the degradation of nuclear proteins.[1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [UBP19_HUMAN] Deubiquitinating enzyme that regulates the degradation of various proteins. Deubiquitinates and prevents proteasomal degradation of RNF123 which in turn stimulates CDKN1B ubiquitin-dependent degradation thereby playing a role in cell proliferation. Involved in decreased protein synthesis in atrophying skeletal muscle. Modulates transcription of major myofibrillar proteins. Also involved in turnover of endoplasmic-reticulum-associated degradation (ERAD) substrates. Regulates the stability of BIRC2/c-IAP1 and BIRC3/c-IAP2 by preventing their ubiquitination. Required for cells to mount an appropriate response to hypoxia and rescues HIF1A from degradation in a non-catalytic manner. Plays an important role in 17 beta-estradiol (E2)-inhibited myogenesis. Decreases the levels of ubiquitinated proteins during skeletal muscle formation and acts to repress myogenesis. Exhibits a preference towards 'Lys-63'-linked Ubiquitin chains.[20] [21] [22] [23] References
|
|