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| | <StructureSection load='1cm0' size='340' side='right'caption='[[1cm0]], [[Resolution|resolution]] 2.30Å' scene=''> | | <StructureSection load='1cm0' size='340' side='right'caption='[[1cm0]], [[Resolution|resolution]] 2.30Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[1cm0]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CM0 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1CM0 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[1cm0]] 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=1CM0 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1CM0 FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=COA:COENZYME+A'>COA</scene></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]] 2.3Å</td></tr> |
| | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=COA:COENZYME+A'>COA</scene></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=1cm0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1cm0 OCA], [https://pdbe.org/1cm0 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1cm0 RCSB], [https://www.ebi.ac.uk/pdbsum/1cm0 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1cm0 ProSAT]</span></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=1cm0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1cm0 OCA], [https://pdbe.org/1cm0 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1cm0 RCSB], [https://www.ebi.ac.uk/pdbsum/1cm0 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1cm0 ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[https://www.uniprot.org/uniprot/KAT2B_HUMAN KAT2B_HUMAN]] Functions as a histone acetyltransferase (HAT) to promote transcriptional activation. Has significant histone acetyltransferase activity with core histones (H3 and H4), and also with nucleosome core particles. Also acetylates non-histone proteins, such as ACLY. Inhibits cell-cycle progression and counteracts the mitogenic activity of the adenoviral oncoprotein E1A. In case of HIV-1 infection, it is recruited by the viral protein Tat. Regulates Tat's transactivating activity and may help inducing chromatin remodeling of proviral genes.<ref>PMID:8684459</ref> <ref>PMID:9707565</ref> <ref>PMID:10675335</ref> <ref>PMID:23932781</ref>
| + | [https://www.uniprot.org/uniprot/KAT2B_HUMAN KAT2B_HUMAN] Functions as a histone acetyltransferase (HAT) to promote transcriptional activation. Has significant histone acetyltransferase activity with core histones (H3 and H4), and also with nucleosome core particles. Also acetylates non-histone proteins, such as ACLY. Inhibits cell-cycle progression and counteracts the mitogenic activity of the adenoviral oncoprotein E1A. In case of HIV-1 infection, it is recruited by the viral protein Tat. Regulates Tat's transactivating activity and may help inducing chromatin remodeling of proviral genes.<ref>PMID:8684459</ref> <ref>PMID:9707565</ref> <ref>PMID:10675335</ref> <ref>PMID:23932781</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Human]] | + | [[Category: Homo sapiens]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Berger, S L]] | + | [[Category: Berger SL]] |
| - | [[Category: Clements, A]] | + | [[Category: Clements A]] |
| - | [[Category: Marmorstein, R]] | + | [[Category: Marmorstein R]] |
| - | [[Category: Rojas, J R]] | + | [[Category: Rojas JR]] |
| - | [[Category: Trievel, R C]] | + | [[Category: Trievel RC]] |
| - | [[Category: Wang, L]] | + | [[Category: Wang L]] |
| - | [[Category: Acetyltransferase]]
| + | |
| - | [[Category: Coactivator]]
| + | |
| - | [[Category: Coenzyme some]]
| + | |
| - | [[Category: P300/cbp associated factor]]
| + | |
| - | [[Category: Signaling protein]]
| + | |
| Structural highlights
Function
KAT2B_HUMAN Functions as a histone acetyltransferase (HAT) to promote transcriptional activation. Has significant histone acetyltransferase activity with core histones (H3 and H4), and also with nucleosome core particles. Also acetylates non-histone proteins, such as ACLY. Inhibits cell-cycle progression and counteracts the mitogenic activity of the adenoviral oncoprotein E1A. In case of HIV-1 infection, it is recruited by the viral protein Tat. Regulates Tat's transactivating activity and may help inducing chromatin remodeling of proviral genes.[1] [2] [3] [4]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
The human p300/CBP-associating factor, PCAF, mediates transcriptional activation through its ability to acetylate nucleosomal histone substrates as well as transcriptional activators such as p53. We have determined the 2.3 A crystal structure of the histone acetyltransferase (HAT) domain of PCAF bound to coenzyme A. The structure reveals a central protein core associated with coenzyme A binding and a pronounced cleft that sits over the protein core and is flanked on opposite sides by the N- and C-terminal protein segments. A correlation of the structure with the extensive mutagenesis data for PCAF and the homologous yeast GCN5 protein implicates the cleft and the N- and C-terminal protein segments as playing an important role in histone substrate binding, and a glutamate residue in the protein core as playing an essential catalytic role. A structural comparison with the coenzyme-bound forms of the related N-acetyltransferases, HAT1 (yeast histone acetyltransferase 1) and SmAAT (Serratia marcescens aminoglycoside 3-N-acetyltransferase), suggests the mode of substrate binding and catalysis by these enzymes and establishes a paradigm for understanding the structure-function relationships of other enzymes that acetylate histones and transcriptional regulators to promote activated transcription.
Crystal structure of the histone acetyltransferase domain of the human PCAF transcriptional regulator bound to coenzyme A.,Clements A, Rojas JR, Trievel RC, Wang L, Berger SL, Marmorstein R EMBO J. 1999 Jul 1;18(13):3521-32. PMID:10393169[5]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Yang XJ, Ogryzko VV, Nishikawa J, Howard BH, Nakatani Y. A p300/CBP-associated factor that competes with the adenoviral oncoprotein E1A. Nature. 1996 Jul 25;382(6589):319-24. PMID:8684459 doi:10.1038/382319a0
- ↑ 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
- ↑ Martinez-Balbas MA, Bauer UM, Nielsen SJ, Brehm A, Kouzarides T. Regulation of E2F1 activity by acetylation. EMBO J. 2000 Feb 15;19(4):662-71. PMID:10675335 doi:10.1093/emboj/19.4.662
- ↑ Lin R, Tao R, Gao X, Li T, Zhou X, Guan KL, Xiong Y, Lei QY. Acetylation stabilizes ATP-citrate lyase to promote lipid biosynthesis and tumor growth. Mol Cell. 2013 Aug 22;51(4):506-18. doi: 10.1016/j.molcel.2013.07.002. Epub 2013 , Aug 8. PMID:23932781 doi:http://dx.doi.org/10.1016/j.molcel.2013.07.002
- ↑ Clements A, Rojas JR, Trievel RC, Wang L, Berger SL, Marmorstein R. Crystal structure of the histone acetyltransferase domain of the human PCAF transcriptional regulator bound to coenzyme A. EMBO J. 1999 Jul 1;18(13):3521-32. PMID:10393169 doi:10.1093/emboj/18.13.3521
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