Crystal structure of the RNF4 ring domain dimerCrystal structure of the RNF4 ring domain dimer
Structural highlights
3ng2 is a 2 chain structure with sequence from Rattus norvegicus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
RNF4_RAT E3 ubiquitin-protein ligase which binds polysumoylated chains covalently attached to proteins and mediates 'Lys-6'-, 'Lys-11'-, 'Lys-48'- and 'Lys-63'-linked polyubiquitination of those substrates and their subsequent targeting to the proteasome for degradation. Regulates the degradation of several proteins including PML and the transcriptional activator PEA3. Involved in chromosome alignment and spindle assembly, it regulates the kinetochore CENPH-CENPI-CENPK complex by targeting polysumoylated CENPI to proteasomal degradation. Regulates the cellular responses to hypoxia and heat shock through degradation of respectively EPAS1 and PARP1. Alternatively, it may also bind DNA/nucleosomes and have a more direct role in the regulation of transcription for instance enhancing basal transcription and steroid receptor-mediated transcriptional activation.[1][2][3][4][5][6]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
↑Moilanen AM, Poukka H, Karvonen U, Hakli M, Janne OA, Palvimo JJ. Identification of a novel RING finger protein as a coregulator in steroid receptor-mediated gene transcription. Mol Cell Biol. 1998 Sep;18(9):5128-39. PMID:9710597
↑Hakli M, Karvonen U, Janne OA, Palvimo JJ. The RING finger protein SNURF is a bifunctional protein possessing DNA binding activity. J Biol Chem. 2001 Jun 29;276(26):23653-60. Epub 2001 Apr 23. PMID:11319220 doi:10.1074/jbc.M009891200
↑Hakli M, Lorick KL, Weissman AM, Janne OA, Palvimo JJ. Transcriptional coregulator SNURF (RNF4) possesses ubiquitin E3 ligase activity. FEBS Lett. 2004 Feb 27;560(1-3):56-62. PMID:14987998 doi:10.1016/S0014-5793(04)00070-5
↑Hakli M, Karvonen U, Janne OA, Palvimo JJ. SUMO-1 promotes association of SNURF (RNF4) with PML nuclear bodies. Exp Cell Res. 2005 Mar 10;304(1):224-33. Epub 2004 Nov 23. PMID:15707587 doi:10.1016/j.yexcr.2004.10.029
↑Tatham MH, Geoffroy MC, Shen L, Plechanovova A, Hattersley N, Jaffray EG, Palvimo JJ, Hay RT. RNF4 is a poly-SUMO-specific E3 ubiquitin ligase required for arsenic-induced PML degradation. Nat Cell Biol. 2008 May;10(5):538-46. doi: 10.1038/ncb1716. Epub 2008 Apr 13. PMID:18408734 doi:10.1038/ncb1716
↑Geoffroy MC, Jaffray EG, Walker KJ, Hay RT. Arsenic-induced SUMO-dependent recruitment of RNF4 into PML nuclear bodies. Mol Biol Cell. 2010 Dec;21(23):4227-39. doi: 10.1091/mbc.E10-05-0449. Epub 2010, Oct 13. PMID:20943951 doi:10.1091/mbc.E10-05-0449