2dy7

From Proteopedia

(Difference between revisions)

Revision as of 17:55, 24 December 2014

Solution structure of the first chromodomain of yeast Chd1

Structural highlights

2dy7 is a 1 chain structure with sequence from Saccharomyces cerevisiae. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	2dy8
Gene:	CHD1/YER164W (Saccharomyces cerevisiae)
Resources:	FirstGlance, OCA, RCSB, PDBsum

Function

[CHD1_YEAST] ATP-dependent chromatin-remodeling factor which functions as substrate recognition component of the transcription regulatory histone acetylation (HAT) complexes SAGA and SLIK. It recognizes H3K4me. SAGA is involved in RNA polymerase II-dependent transcriptional regulation of approximately 10% of yeast genes. At the promoters, SAGA is required for recruitment of the basal transcription machinery. It influences RNA polymerase II transcriptional activity through different activities such as TBP interaction (SPT3, SPT8 and SPT20) and promoter selectivity, interaction with transcription activators (GCN5, ADA2, ADA3 and TRA1), and chromatin modification through histone acetylation (GCN5) and deubiquitination (UBP8). SAGA acetylates nucleosomal histone H3 to some extent (to form H3K9ac, H3K14ac, H3K18ac and H3K23ac). SAGA interacts with DNA via upstream activating sequences (UASs). SLIK is proposed to have partly overlapping functions with SAGA. It preferentially acetylates methylated histone H3, at least after activation at the GAL1-10 locus. Acts in opposition to the FACT complex in regulating polymerase II transcription. Also required for efficient transcription by RNA polymerase I, and more specifically the pol I transcription termination step. Regulates negatively DNA replication. Not only involved in transcription-related chromatin-remodeling, but also required to maintain a specific chromatin configuration across the genome.^[1] ^[2] ^[3] ^[4] ^[5] ^[6] ^[7] ^[8] ^[9] ^[10] ^[11]

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

Chromodomain from heterochromatin protein 1 and polycomb protein is known to be a lysine-methylated histone H3 tail-binding module. Chromo-helicase/ATPase DNA-binding protein 1 (CHD1) is an ATP-dependent chromatin remodeling factor, containing two tandem chromodomains. In human CHD1, both chromodomains are essential for specific binding to a K4 methylated histone H3 (H3 MeK4) peptide and are found to bind cooperatively in the crystal structure. For the budding yeast homologue, Chd1, the second but not the first chromodomain was once reported to bind to an H3 MeK4 peptide. Here, we reveal that neither the second chromodomain nor a region containing tandem chromodomains from yeast Chd1 bind to any lysine-methylated or arginine-methylated histone peptides that we examined. In addition, we examined the structures of the chromodomains from Chd1 by NMR. Although the tertiary structure of the region containing tandem chromodomains could not be obtained, the secondary structure deduced from NMR is well conserved in the tertiary structures of the corresponding first and second chromodomains determined individually by NMR. Both chromodomains of Chd1 demonstrate a structure similar to that of the corresponding part of CHD1, consisting of a three-stranded beta-sheet followed by a C-terminal alpha-helix. However, an additional helix between the first and second beta-strands, which is found in both of the first chromodomains of Chd1 and CHD1, is positioned in an entirely different manner in Chd1 and CHD1. In human CHD1 this helix forms the peptide-binding site. The amino acid sequences of the chromodomains could be well aligned on the basis of these structures. The alignment showed that yeast Chd1 lacks several key functional residues, which are responsible for specific binding to a methylated lysine residue in other chromodomains. Chd1 is likely to have no binding affinity for any H3 MeK peptide, as found in other chromodomain proteins.

Structural polymorphism of chromodomains in Chd1.,Okuda M, Horikoshi M, Nishimura Y J Mol Biol. 2007 Jan 26;365(4):1047-62. Epub 2006 Oct 14. PMID:17098252^[12]

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

References

↑ Grant PA, Eberharter A, John S, Cook RG, Turner BM, Workman JL. Expanded lysine acetylation specificity of Gcn5 in native complexes. J Biol Chem. 1999 Feb 26;274(9):5895-900. PMID:10026213
↑ Tran HG, Steger DJ, Iyer VR, Johnson AD. The chromo domain protein chd1p from budding yeast is an ATP-dependent chromatin-modifying factor. EMBO J. 2000 May 15;19(10):2323-31. PMID:10811623 doi:http://dx.doi.org/10.1093/emboj/19.10.2323
↑ Simic R, Lindstrom DL, Tran HG, Roinick KL, Costa PJ, Johnson AD, Hartzog GA, Arndt KM. Chromatin remodeling protein Chd1 interacts with transcription elongation factors and localizes to transcribed genes. EMBO J. 2003 Apr 15;22(8):1846-56. PMID:12682017 doi:http://dx.doi.org/10.1093/emboj/cdg179
↑ Robinson KM, Schultz MC. Replication-independent assembly of nucleosome arrays in a novel yeast chromatin reconstitution system involves antisilencing factor Asf1p and chromodomain protein Chd1p. Mol Cell Biol. 2003 Nov;23(22):7937-46. PMID:14585955
↑ Pray-Grant MG, Daniel JA, Schieltz D, Yates JR 3rd, Grant PA. Chd1 chromodomain links histone H3 methylation with SAGA- and SLIK-dependent acetylation. Nature. 2005 Jan 27;433(7024):434-8. Epub 2005 Jan 12. PMID:15647753 doi:http://dx.doi.org/nature03242
↑ Stockdale C, Flaus A, Ferreira H, Owen-Hughes T. Analysis of nucleosome repositioning by yeast ISWI and Chd1 chromatin remodeling complexes. J Biol Chem. 2006 Jun 16;281(24):16279-88. Epub 2006 Apr 10. PMID:16606615 doi:http://dx.doi.org/10.1074/jbc.M600682200
↑ Xella B, Goding C, Agricola E, Di Mauro E, Caserta M. The ISWI and CHD1 chromatin remodelling activities influence ADH2 expression and chromatin organization. Mol Microbiol. 2006 Mar;59(5):1531-41. PMID:16468993 doi:http://dx.doi.org/10.1111/j.1365-2958.2005.05031.x
↑ Ferreira H, Flaus A, Owen-Hughes T. Histone modifications influence the action of Snf2 family remodelling enzymes by different mechanisms. J Mol Biol. 2007 Nov 30;374(3):563-79. Epub 2007 Sep 26. PMID:17949749 doi:http://dx.doi.org/10.1016/j.jmb.2007.09.059
↑ Biswas D, Dutta-Biswas R, Stillman DJ. Chd1 and yFACT act in opposition in regulating transcription. Mol Cell Biol. 2007 Sep;27(18):6279-87. Epub 2007 Jul 9. PMID:17620414 doi:http://dx.doi.org/10.1128/MCB.00978-07
↑ Jones HS, Kawauchi J, Braglia P, Alen CM, Kent NA, Proudfoot NJ. RNA polymerase I in yeast transcribes dynamic nucleosomal rDNA. Nat Struct Mol Biol. 2007 Feb;14(2):123-30. Epub 2007 Jan 28. PMID:17259992 doi:http://dx.doi.org/10.1038/nsmb1199
↑ Biswas D, Takahata S, Xin H, Dutta-Biswas R, Yu Y, Formosa T, Stillman DJ. A role for Chd1 and Set2 in negatively regulating DNA replication in Saccharomyces cerevisiae. Genetics. 2008 Feb;178(2):649-59. doi: 10.1534/genetics.107.084202. Epub 2008 Feb, 1. PMID:18245327 doi:http://dx.doi.org/10.1534/genetics.107.084202
↑ Okuda M, Horikoshi M, Nishimura Y. Structural polymorphism of chromodomains in Chd1. J Mol Biol. 2007 Jan 26;365(4):1047-62. Epub 2006 Oct 14. PMID:17098252 doi:10.1016/j.jmb.2006.10.039

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2dy7"

Categories: Saccharomyces cerevisiae | Nishimura, Y | Okuda, M | Chromatin remodeling | Hydrolase

@@ Line 3: / Line 3: @@
 == Structural highlights ==
 <table><tr><td colspan='2'>[[2dy7]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2DY7 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2DY7 FirstGlance]. <br>
-</td></tr><tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2dy8|2dy8]]</td></tr>
+</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2dy8|2dy8]]</td></tr>
-<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CHD1/YER164W ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4932 Saccharomyces cerevisiae])</td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CHD1/YER164W ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4932 Saccharomyces cerevisiae])</td></tr>
-<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2dy7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2dy7 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2dy7 RCSB], [http://www.ebi.ac.uk/pdbsum/2dy7 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=2dy7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2dy7 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2dy7 RCSB], [http://www.ebi.ac.uk/pdbsum/2dy7 PDBsum]</span></td></tr>
-<table>
+</table>
+== Function ==
+[[http://www.uniprot.org/uniprot/CHD1_YEAST CHD1_YEAST]] ATP-dependent chromatin-remodeling factor which functions as substrate recognition component of the transcription regulatory histone acetylation (HAT) complexes SAGA and SLIK. It recognizes H3K4me. SAGA is involved in RNA polymerase II-dependent transcriptional regulation of approximately 10% of yeast genes. At the promoters, SAGA is required for recruitment of the basal transcription machinery. It influences RNA polymerase II transcriptional activity through different activities such as TBP interaction (SPT3, SPT8 and SPT20) and promoter selectivity, interaction with transcription activators (GCN5, ADA2, ADA3 and TRA1), and chromatin modification through histone acetylation (GCN5) and deubiquitination (UBP8). SAGA acetylates nucleosomal histone H3 to some extent (to form H3K9ac, H3K14ac, H3K18ac and H3K23ac). SAGA interacts with DNA via upstream activating sequences (UASs). SLIK is proposed to have partly overlapping functions with SAGA. It preferentially acetylates methylated histone H3, at least after activation at the GAL1-10 locus. Acts in opposition to the FACT complex in regulating polymerase II transcription. Also required for efficient transcription by RNA polymerase I, and more specifically the pol I transcription termination step. Regulates negatively DNA replication. Not only involved in transcription-related chromatin-remodeling, but also required to maintain a specific chromatin configuration across the genome.<ref>PMID:10026213</ref> <ref>PMID:10811623</ref> <ref>PMID:12682017</ref> <ref>PMID:14585955</ref> <ref>PMID:15647753</ref> <ref>PMID:16606615</ref> <ref>PMID:16468993</ref> <ref>PMID:17949749</ref> <ref>PMID:17620414</ref> <ref>PMID:17259992</ref> <ref>PMID:18245327</ref>
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 33: / Line 35: @@
 </StructureSection>
 [[Category: Saccharomyces cerevisiae]]
-[[Category: Nishimura, Y.]]
+[[Category: Nishimura, Y]]
-[[Category: Okuda, M.]]
+[[Category: Okuda, M]]
 [[Category: Chromatin remodeling]]
 [[Category: Hydrolase]]

2dy7

From Proteopedia

Revision as of 17:55, 24 December 2014

Solution structure of the first chromodomain of yeast Chd1

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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