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2fui

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Revision as of 21:40, 10 September 2015

NMR solution structure of PHD finger fragment of human BPTF in free state

Structural highlights

2fui is a 1 chain structure with sequence from Human. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	2f6j, 2fsa
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum

Function

[BPTF_HUMAN] Histone-binding component of NURF (nucleosome-remodeling factor), a complex which catalyzes ATP-dependent nucleosome sliding and facilitates transcription of chromatin. Specifically recognizes H3 tails trimethylated on 'Lys-4' (H3K4me3), which mark transcription start sites of virtually all active genes. May also regulate transcription through direct binding to DNA or transcription factors.

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

Mono-, di- and trimethylated states of particular histone lysine residues are selectively found in different regions of chromatin, thereby implying specialized biological functions for these marks ranging from heterochromatin formation to X-chromosome inactivation and transcriptional regulation. A major challenge in chromatin biology has centred on efforts to define the connection between specific methylation states and distinct biological read-outs impacting on function. For example, histone H3 trimethylated at lysine 4 (H3K4me3) is associated with transcription start sites of active genes, but the molecular 'effectors' involved in specific recognition of H3K4me3 tails remain poorly understood. Here we demonstrate the molecular basis for specific recognition of H3(1-15)K4me3 (residues 1-15 of histone H3 trimethylated at K4) by a plant homeodomain (PHD) finger of human BPTF (bromodomain and PHD domain transcription factor), the largest subunit of the ATP-dependent chromatin-remodelling complex, NURF (nucleosome remodelling factor). We report on crystallographic and NMR structures of the bromodomain-proximal PHD finger of BPTF in free and H3(1-15)K4me3-bound states. H3(1-15)K4me3 interacts through anti-parallel beta-sheet formation on the surface of the PHD finger, with the long side chains of arginine 2 (R2) and K4me3 fitting snugly in adjacent pre-formed surface pockets, and bracketing an invariant tryptophan. The observed stapling role by non-adjacent R2 and K4me3 provides a molecular explanation for H3K4me3 site specificity. Binding studies establish that the BPTF PHD finger exhibits a modest preference for K4me3- over K4me2-containing H3 peptides, and discriminates against monomethylated and unmodified counterparts. Furthermore, we identified key specificity-determining residues from binding studies of H3(1-15)K4me3 with PHD finger point mutants. Our findings call attention to the PHD finger as a previously uncharacterized chromatin-binding module found in a large number of chromatin-associated proteins.

Molecular basis for site-specific read-out of histone H3K4me3 by the BPTF PHD finger of NURF.,Li H, Ilin S, Wang W, Duncan EM, Wysocka J, Allis CD, Patel DJ Nature. 2006 Jul 6;442(7098):91-5. Epub 2006 May 21. PMID:16728978^[1]

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

References

↑ Li H, Ilin S, Wang W, Duncan EM, Wysocka J, Allis CD, Patel DJ. Molecular basis for site-specific read-out of histone H3K4me3 by the BPTF PHD finger of NURF. Nature. 2006 Jul 6;442(7098):91-5. Epub 2006 May 21. PMID:16728978 doi:http://dx.doi.org/10.1038/nature04802

1 Structural highlights
2 Function
3 Evolutionary Conservation
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/2fui"

@@ Line 2: / Line 2: @@
 <StructureSection load='2fui' size='340' side='right' caption='[[2fui]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2fui]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FUI OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2FUI FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2fui]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FUI OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2FUI FirstGlance]. <br>
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2f6j|2f6j]], [[2fsa|2fsa]]</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=2fui FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fui OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2fui RCSB], [http://www.ebi.ac.uk/pdbsum/2fui PDBsum]</span></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=2fui FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fui OCA], [http://pdbe.org/2fui PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2fui RCSB], [http://www.ebi.ac.uk/pdbsum/2fui PDBsum]</span></td></tr>
 </table>
 == Function ==
@@ Line 26: / Line 26: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 2fui" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>
 __TOC__
 </StructureSection>
-[[Category: Homo sapiens]]
+[[Category: Human]]
 [[Category: Ilin, S]]
 [[Category: Patel, D J]]

2fui

From Proteopedia

Revision as of 21:40, 10 September 2015

NMR solution structure of PHD finger fragment of human BPTF in free state

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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