4hpl: Difference between revisions

Latest revision as of 11:42, 1 March 2024

PCGF1 Ub fold (RAWUL)/BCOR PUFD Complex

Structural highlights

4hpl is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2Å
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

BCOR_HUMAN Defects in BCOR are the cause of microphthalmia syndromic type 2 (MCOPS2) [MIM:300166. Microphthalmia is a clinically heterogeneous disorder of eye formation, ranging from small size of a single eye to complete bilateral absence of ocular tissues (anophthalmia). In many cases, microphthalmia/anophthalmia occurs in association with syndromes that include non-ocular abnormalities. MCOPS2 is a very rare multiple congenital anomaly syndrome characterized by eye anomalies (congenital cataract, microphthalmia, or secondary glaucoma), facial abnormalities (long narrow face, high nasal bridge, pointed nose with cartilages separated at the tip, cleft palate, or submucous cleft palate), cardiac anomalies (atrial septal defect, ventricular septal defect, or floppy mitral valve) and dental abnormalities (canine radiculomegaly, delayed dentition, oligodontia, persistent primary teeth, or variable root length).^[1]

Function

BCOR_HUMAN Transcriptional corepressor. May specifically inhibit gene expression when recruited to promoter regions by sequence specific DNA-binding proteins such as BCL6 and MLLT3. This repression may be mediated at least in part by histone deacetylase activities which can associate with this corepressor. Involved in the repression of TFAP2A; impairs binding of BCL6 and KDM2B to TFAP2A promoter regions. Via repression of TFAP2A acts as a negative regulator of osteo-dentiogenic capacity in adult stem cells; the function implies inhibition of methylation on histone H3 'Lys-4' (H3K4me3) and 'Lys-36' (H3K36me2).^[2] ^[3] ^[4] ^[5]

References

↑ Ng D, Thakker N, Corcoran CM, Donnai D, Perveen R, Schneider A, Hadley DW, Tifft C, Zhang L, Wilkie AO, van der Smagt JJ, Gorlin RJ, Burgess SM, Bardwell VJ, Black GC, Biesecker LG. Oculofaciocardiodental and Lenz microphthalmia syndromes result from distinct classes of mutations in BCOR. Nat Genet. 2004 Apr;36(4):411-6. Epub 2004 Mar 7. PMID:15004558 doi:10.1038/ng1321
↑ Huynh KD, Fischle W, Verdin E, Bardwell VJ. BCoR, a novel corepressor involved in BCL-6 repression. Genes Dev. 2000 Jul 15;14(14):1810-23. PMID:10898795
↑ Ng D, Thakker N, Corcoran CM, Donnai D, Perveen R, Schneider A, Hadley DW, Tifft C, Zhang L, Wilkie AO, van der Smagt JJ, Gorlin RJ, Burgess SM, Bardwell VJ, Black GC, Biesecker LG. Oculofaciocardiodental and Lenz microphthalmia syndromes result from distinct classes of mutations in BCOR. Nat Genet. 2004 Apr;36(4):411-6. Epub 2004 Mar 7. PMID:15004558 doi:10.1038/ng1321
↑ Fan Z, Yamaza T, Lee JS, Yu J, Wang S, Fan G, Shi S, Wang CY. BCOR regulates mesenchymal stem cell function by epigenetic mechanisms. Nat Cell Biol. 2009 Aug;11(8):1002-9. doi: 10.1038/ncb1913. Epub 2009 Jul 5. PMID:19578371 doi:10.1038/ncb1913
↑ Ghetu AF, Corcoran CM, Cerchietti L, Bardwell VJ, Melnick A, Prive GG. Structure of a BCOR corepressor peptide in complex with the BCL6 BTB domain dimer. Mol Cell. 2008 Feb 15;29(3):384-91. PMID:18280243 doi:10.1016/j.molcel.2007.12.026

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OCA

[1] Ng D, Thakker N, Corcoran CM, Donnai D, Perveen R, Schneider A, Hadley DW, Tifft C, Zhang L, Wilkie AO, van der Smagt JJ, Gorlin RJ, Burgess SM, Bardwell VJ, Black GC, Biesecker LG. Oculofaciocardiodental and Lenz microphthalmia syndromes result from distinct classes of mutations in BCOR. Nat Genet. 2004 Apr;36(4):411-6. Epub 2004 Mar 7. PMID:15004558 doi:10.1038/ng1321

[2] Huynh KD, Fischle W, Verdin E, Bardwell VJ. BCoR, a novel corepressor involved in BCL-6 repression. Genes Dev. 2000 Jul 15;14(14):1810-23. PMID:10898795

[3] Ng D, Thakker N, Corcoran CM, Donnai D, Perveen R, Schneider A, Hadley DW, Tifft C, Zhang L, Wilkie AO, van der Smagt JJ, Gorlin RJ, Burgess SM, Bardwell VJ, Black GC, Biesecker LG. Oculofaciocardiodental and Lenz microphthalmia syndromes result from distinct classes of mutations in BCOR. Nat Genet. 2004 Apr;36(4):411-6. Epub 2004 Mar 7. PMID:15004558 doi:10.1038/ng1321

[4] Fan Z, Yamaza T, Lee JS, Yu J, Wang S, Fan G, Shi S, Wang CY. BCOR regulates mesenchymal stem cell function by epigenetic mechanisms. Nat Cell Biol. 2009 Aug;11(8):1002-9. doi: 10.1038/ncb1913. Epub 2009 Jul 5. PMID:19578371 doi:10.1038/ncb1913

[5] Ghetu AF, Corcoran CM, Cerchietti L, Bardwell VJ, Melnick A, Prive GG. Structure of a BCOR corepressor peptide in complex with the BCL6 BTB domain dimer. Mol Cell. 2008 Feb 15;29(3):384-91. PMID:18280243 doi:10.1016/j.molcel.2007.12.026

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@@ Line 4: / Line 4: @@
 == Structural highlights ==
 <table><tr><td colspan='2'>[[4hpl]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4HPL OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4HPL FirstGlance]. <br>
-</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4hpl FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4hpl OCA], [https://pdbe.org/4hpl PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4hpl RCSB], [https://www.ebi.ac.uk/pdbsum/4hpl PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4hpl ProSAT]</span></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2&#8491;</td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4hpl FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4hpl OCA], [https://pdbe.org/4hpl PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4hpl RCSB], [https://www.ebi.ac.uk/pdbsum/4hpl PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4hpl ProSAT]</span></td></tr>
 </table>
 == Disease ==
@@ Line 10: / Line 11: @@
 == Function ==
 [https://www.uniprot.org/uniprot/BCOR_HUMAN BCOR_HUMAN] Transcriptional corepressor. May specifically inhibit gene expression when recruited to promoter regions by sequence specific DNA-binding proteins such as BCL6 and MLLT3. This repression may be mediated at least in part by histone deacetylase activities which can associate with this corepressor. Involved in the repression of TFAP2A; impairs binding of BCL6 and KDM2B to TFAP2A promoter regions. Via repression of TFAP2A acts as a negative regulator of osteo-dentiogenic capacity in adult stem cells; the function implies inhibition of methylation on histone H3 'Lys-4' (H3K4me3) and 'Lys-36' (H3K36me2).<ref>PMID:10898795</ref> <ref>PMID:15004558</ref> <ref>PMID:19578371</ref> <ref>PMID:18280243</ref>
-<div style="background-color:#fffaf0;">
-== Publication Abstract from PubMed ==
-Polycomb-group RING finger homologs (PCGF1, PCGF2, PCGF3, PCGF4, PCGF5, and PCGF6) are critical components in the assembly of distinct Polycomb repression complex 1 (PRC1)-related complexes. Here, we identify a protein interaction domain in BCL6 corepressor, BCOR, which binds the RING finger- and WD40-associated ubiquitin-like (RAWUL) domain of PCGF1 (NSPC1) and PCGF3 but not of PCGF2 (MEL18) or PCGF4 (BMI1). Because of the selective binding, we have named this domain PCGF Ub-like fold discriminator (PUFD). The structure of BCOR PUFD bound to PCGF1 reveals that (1) PUFD binds to the same surfaces as observed for a different Polycomb group RAWUL domain and (2) the ability of PUFD to discriminate among RAWULs stems from the identity of specific residues within these interaction surfaces. These data show the molecular basis for determining the binding preference for a PCGF homolog, which ultimately helps determine the identity of the larger PRC1-like assembly.
-Structure of the Polycomb Group Protein PCGF1 in Complex with BCOR Reveals Basis for Binding Selectivity of PCGF Homologs.,Junco SE, Wang R, Gaipa JC, Taylor AB, Schirf V, Gearhart MD, Bardwell VJ, Demeler B, Hart PJ, Kim CA Structure. 2013 Apr 2;21(4):665-71. doi: 10.1016/j.str.2013.02.013. Epub 2013 Mar, 21. PMID:23523425<ref>PMID:23523425</ref>
+==See Also==
+*[[Polycomb complex proteins 3D structures|Polycomb complex proteins 3D structures]]
-From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-</div>
-<div class="pdbe-citations 4hpl" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>

4hpl: Difference between revisions

Latest revision as of 11:42, 1 March 2024

PCGF1 Ub fold (RAWUL)/BCOR PUFD Complex

Structural highlights

Disease

Function

See Also

References

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