1n72: Difference between revisions

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[[Image:1n72.gif|left|200px]]
[[Image:1n72.png|left|200px]]


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==Overview==
{{ABSTRACT_10365964}}
Histone acetylation is important in chromatin remodelling and gene activation. Nearly all known histone-acetyltransferase (HAT)-associated transcriptional co-activators contain bromodomains, which are approximately 110-amino-acid modules found in many chromatin-associated proteins. Despite the wide occurrence of these bromodomains, their three-dimensional structure and binding partners remain unknown. Here we report the solution structure of the bromodomain of the HAT co-activator P/CAF (p300/CBP-associated factor). The structure reveals an unusual left-handed up-and-down four-helix bundle. In addition, we show by a combination of structural and site-directed mutagenesis studies that bromodomains can interact specifically with acetylated lysine, making them the first known protein modules to do so. The nature of the recognition of acetyl-lysine by the P/CAF bromodomain is similar to that of acetyl-CoA by histone acetyltransferase. Thus, the bromodomain is functionally linked to the HAT activity of co-activators in the regulation of gene transcription.


==About this Structure==
==About this Structure==
1N72 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1b91 1b91]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1N72 OCA].  
1N72 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1b91 1b91]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1N72 OCA].  
==Reference==
Structure and ligand of a histone acetyltransferase bromodomain., Dhalluin C, Carlson JE, Zeng L, He C, Aggarwal AK, Zhou MM, Nature. 1999 Jun 3;399(6735):491-6. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10365964 10365964]
[[Category: Histone acetyltransferase]]
[[Category: Histone acetyltransferase]]
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: 4-helical bundle]]
[[Category: 4-helical bundle]]
[[Category: Histone acetyltransferase bromodomain]]
[[Category: Histone acetyltransferase bromodomain]]
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Revision as of 19:15, 25 June 2008

File:1n72.png

Template:STRUCTURE 1n72

Structure and Ligand of a Histone Acetyltransferase Bromodomain


Template:ABSTRACT 10365964

About this StructureAbout this Structure

1N72 is a Single protein structure of sequence from Homo sapiens. This structure supersedes the now removed PDB entry 1b91. Full crystallographic information is available from OCA.

Page seeded by OCA on Wed Jun 25 19:15:19 2008

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