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5gh9

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Revision as of 06:42, 13 May 2020

Crystal structure of CBP Bromodomain with H3K56ac peptide

Structural highlights

5gh9 is a 2 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
NonStd Res:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

[CBP_HUMAN] Note=Chromosomal aberrations involving CREBBP may be a cause of acute myeloid leukemias. Translocation t(8;16)(p11;p13) with KAT6A; translocation t(11;16)(q23;p13.3) with MLL/HRX; translocation t(10;16)(q22;p13) with KAT6B. KAT6A-CREBBP may induce leukemia by inhibiting RUNX1-mediated transcription. Defects in CREBBP are a cause of Rubinstein-Taybi syndrome type 1 (RSTS1) [MIM:180849]. RSTS1 is an autosomal dominant disorder characterized by craniofacial abnormalities, broad thumbs, broad big toes, mental retardation and a propensity for development of malignancies.^[1] ^[2] ^[3] ^[4]

Function

[CBP_HUMAN] Acetylates histones, giving a specific tag for transcriptional activation. Also acetylates non-histone proteins, like NCOA3 and FOXO1. Binds specifically to phosphorylated CREB and enhances its transcriptional activity toward cAMP-responsive genes. Acts as a coactivator of ALX1 in the presence of EP300.^[5] ^[6] ^[7] ^[8]

Publication Abstract from PubMed

The acetylation of lysine 56 of histone H3 (H3K56ac) enhances the binding affinity of histone chaperones to H3-H4 dimers. CREB binding protein (CBP) possesses a bromodomain that recognizes H3K56 acetylation. CBP also possesses a histone acetyltransferase (HAT) domain, which has been shown to promote H3K56 acetylation of free histones to facilitate delivery of replication-dependent chaperones to acetylated histones for chromatin assembly. However, the mechanism by which the CBP bromodomain recognizes H3K56ac, and thecontext in which such recognition occurs remains elusive. Here, we solved the crystal structure of the CBP bromodomain in complex with an H3K56ac peptide. Our data demonstrate that the CBP bromodomain recognizes H3K56ac with high affinity. Structural and affinity analyses reveal that the CBPbromodomain prefers an aromatic residue at the -2 position and an arginine at the -4 position from the acetyl-lysine, and that the CBP bromodomain selectively recognizes an extended conformation of the H3 alphaN helix that contains H3K56ac. We also demonstrate that the CBP bromodomain binds to H3K56ac in a recombinant H3-H4 dimer but not in a mono-nucleosome. Our results suggest that the CBP bromodomain selectively recognizes an extended conformation of the K56-acetylated H3 alphaN region within an H3-H4 dimer, which is expected to facilitate the HAT activity of CBP for subsequent H3K56 acetylation of free histones. This article is protected by copyright. All rights reserved.

Structural insight into CBP bromodomain-mediated recognition of acetylated histone H3K56ac.,Xu L, Cheng A, Huang M, Zhang J, Jiang Y, Wang C, Li F, Bao H, Gao J, Wang N, Liu J, Wu J, Wong CCL, Ruan K FEBS J. 2017 Aug 16. doi: 10.1111/febs.14198. PMID:28815970^[9]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Murata T, Kurokawa R, Krones A, Tatsumi K, Ishii M, Taki T, Masuno M, Ohashi H, Yanagisawa M, Rosenfeld MG, Glass CK, Hayashi Y. Defect of histone acetyltransferase activity of the nuclear transcriptional coactivator CBP in Rubinstein-Taybi syndrome. Hum Mol Genet. 2001 May 1;10(10):1071-6. PMID:11331617
↑ Bartsch O, Locher K, Meinecke P, Kress W, Seemanova E, Wagner A, Ostermann K, Rodel G. Molecular studies in 10 cases of Rubinstein-Taybi syndrome, including a mild variant showing a missense mutation in codon 1175 of CREBBP. J Med Genet. 2002 Jul;39(7):496-501. PMID:12114483
↑ Kalkhoven E, Roelfsema JH, Teunissen H, den Boer A, Ariyurek Y, Zantema A, Breuning MH, Hennekam RC, Peters DJ. Loss of CBP acetyltransferase activity by PHD finger mutations in Rubinstein-Taybi syndrome. Hum Mol Genet. 2003 Feb 15;12(4):441-50. PMID:12566391
↑ Roelfsema JH, White SJ, Ariyurek Y, Bartholdi D, Niedrist D, Papadia F, Bacino CA, den Dunnen JT, van Ommen GJ, Breuning MH, Hennekam RC, Peters DJ. Genetic heterogeneity in Rubinstein-Taybi syndrome: mutations in both the CBP and EP300 genes cause disease. Am J Hum Genet. 2005 Apr;76(4):572-80. Epub 2005 Feb 10. PMID:15706485 doi:S0002-9297(07)62869-9
↑ Zhang W, Bieker JJ. Acetylation and modulation of erythroid Kruppel-like factor (EKLF) activity by interaction with histone acetyltransferases. Proc Natl Acad Sci U S A. 1998 Aug 18;95(17):9855-60. PMID:9707565
↑ Hung HL, Kim AY, Hong W, Rakowski C, Blobel GA. Stimulation of NF-E2 DNA binding by CREB-binding protein (CBP)-mediated acetylation. J Biol Chem. 2001 Apr 6;276(14):10715-21. Epub 2001 Jan 11. PMID:11154691 doi:10.1074/jbc.M007846200
↑ Masumi A, Yamakawa Y, Fukazawa H, Ozato K, Komuro K. Interferon regulatory factor-2 regulates cell growth through its acetylation. J Biol Chem. 2003 Jul 11;278(28):25401-7. Epub 2003 May 7. PMID:12738767 doi:10.1074/jbc.M213037200
↑ Iioka T, Furukawa K, Yamaguchi A, Shindo H, Yamashita S, Tsukazaki T. P300/CBP acts as a coactivator to cartilage homeoprotein-1 (Cart1), paired-like homeoprotein, through acetylation of the conserved lysine residue adjacent to the homeodomain. J Bone Miner Res. 2003 Aug;18(8):1419-29. PMID:12929931 doi:http://dx.doi.org/10.1359/jbmr.2003.18.8.1419
↑ Xu L, Cheng A, Huang M, Zhang J, Jiang Y, Wang C, Li F, Bao H, Gao J, Wang N, Liu J, Wu J, Wong CCL, Ruan K. Structural insight into CBP bromodomain-mediated recognition of acetylated histone H3K56ac. FEBS J. 2017 Aug 16. doi: 10.1111/febs.14198. PMID:28815970 doi:http://dx.doi.org/10.1111/febs.14198

1 Structural highlights
2 Disease
3 Function
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/5gh9"

Categories: Large Structures | Xu, L | H3k56ac bromodomain | Transcription

@@ Line 1: / Line 1: @@
 ==Crystal structure of CBP Bromodomain with H3K56ac peptide==
-<StructureSection load='5gh9' size='340' side='right' caption='[[5gh9]], [[Resolution|resolution]] 1.45&Aring;' scene=''>
+<StructureSection load='5gh9' size='340' side='right'caption='[[5gh9]], [[Resolution|resolution]] 1.45&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[5gh9]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5GH9 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5GH9 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[5gh9]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5GH9 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=5GH9 FirstGlance]. <br>
 </td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=ALY:N(6)-ACETYLLYSINE'>ALY</scene></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=5gh9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5gh9 OCA], [http://pdbe.org/5gh9 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5gh9 RCSB], [http://www.ebi.ac.uk/pdbsum/5gh9 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5gh9 ProSAT]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=5gh9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5gh9 OCA], [http://pdbe.org/5gh9 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5gh9 RCSB], [http://www.ebi.ac.uk/pdbsum/5gh9 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5gh9 ProSAT]</span></td></tr>
 </table>
 == Disease ==
@@ Line 24: / Line 24: @@
 __TOC__
 </StructureSection>
+[[Category: Large Structures]]
 [[Category: Xu, L]]
 [[Category: H3k56ac bromodomain]]
 [[Category: Transcription]]

5gh9

From Proteopedia

Revision as of 06:42, 13 May 2020

Crystal structure of CBP Bromodomain with H3K56ac peptide

Structural highlights

Disease

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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