1m1d: Difference between revisions
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==TETRAHYMENA GCN5 WITH BOUND BISUBSTRATE ANALOG INHIBITOR== | ==TETRAHYMENA GCN5 WITH BOUND BISUBSTRATE ANALOG INHIBITOR== | ||
<StructureSection load='1m1d' size='340' side='right' caption='[[1m1d]], [[Resolution|resolution]] 2.20Å' scene=''> | <StructureSection load='1m1d' size='340' side='right'caption='[[1m1d]], [[Resolution|resolution]] 2.20Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1m1d]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Tetth Tetth]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1M1D OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1M1D FirstGlance]. <br> | <table><tr><td colspan='2'>[[1m1d]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Tetth Tetth]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1M1D OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1M1D FirstGlance]. <br> | ||
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Check<jmol> | Check<jmol> | ||
<jmolCheckbox> | <jmolCheckbox> | ||
<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/m1/1m1d_consurf.spt"</scriptWhenChecked> | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/m1/1m1d_consurf.spt"</scriptWhenChecked> | ||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
<text>to colour the structure by Evolutionary Conservation</text> | <text>to colour the structure by Evolutionary Conservation</text> | ||
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__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Large Structures]] | |||
[[Category: Tetth]] | [[Category: Tetth]] | ||
[[Category: Cebrat, M]] | [[Category: Cebrat, M]] | ||
Revision as of 12:08, 24 July 2019
TETRAHYMENA GCN5 WITH BOUND BISUBSTRATE ANALOG INHIBITORTETRAHYMENA GCN5 WITH BOUND BISUBSTRATE ANALOG INHIBITOR
Structural highlights
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 PubMedHistone acetyltransferases (HATs) use acetyl CoA to acetylate target lysine residues within histones and other transcription factors, such as the p53 tumor suppressor, to promote gene activation. HAT enzymes fall into subfamilies with divergence in sequence and substrate preference. Several HAT proteins have been implicated in human cancer. We have previously reported on the preparation of peptide-CoA conjugate inhibitors with distinct specificities for the p300/CBP [cAMP response element binding protein (CREB)-binding protein] or GCN5 HAT subfamilies. Here we report on the crystal structure of the GCN5 HAT bound to a peptide-CoA conjugate containing CoA covalently attached through an isopropionyl linker to Lys-14 of a 20-aa N-terminal fragment of histone H3. Surprisingly, the structure reveals that the H3 portion of the inhibitor is bound outside of the binding site for the histone substrate and that only five of the 20 aa residues of the inhibitor are ordered. Rearrangements within the C-terminal region of the GCN5 protein appear to mediate this peptide displacement. Mutational and enzymatic data support the hypothesis that the observed structure corresponds to a late catalytic intermediate. The structure also provides a structural scaffold for the design of HAT-specific inhibitors that may have therapeutic applications for the treatment of HAT-mediated cancers. Structure of the GCN5 histone acetyltransferase bound to a bisubstrate inhibitor.,Poux AN, Cebrat M, Kim CM, Cole PA, Marmorstein R Proc Natl Acad Sci U S A. 2002 Oct 29;99(22):14065-70. Epub 2002 Oct 21. PMID:12391296[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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