2rnz

From Proteopedia

(Difference between revisions)

Revision as of 11:22, 5 September 2018

Solution structure of the presumed chromodomain of the yeast histone acetyltransferase, Esa1

Structural highlights

2rnz is a 1 chain structure with sequence from Atcc 18824. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	2ro0
Activity:	Histone acetyltransferase, with EC number 2.3.1.48
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[ESA1_YEAST] Catalytic component of the NuA4 histone acetyltransferase (HAT) complex which is involved in epigenetic transcriptional activation of selected genes principally by acetylation of nucleosomal histones H4, H3, H2B, H2A and H2A variant H2A.Z. Acetylates histone H4 to form H4K5ac, H4K8ac, H4K12ac and H4K16ac, histone H3 to form H3K14ac, histone H2B to form H2BK16ac, histone H2A to form H2AK4ac and H2AK7ac, and histone variant H2A.Z to form H2A.ZK14ac. Acetylation of histone H4 is essential for DNA double-strand break repair through homologous recombination. Involved in cell cycle progression. Recruitment to promoters depends on H3K4me.^[1] ^[2] ^[3] ^[4] ^[5] ^[6] ^[7] ^[8] ^[9]

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

Chromodomains are methylated histone binding modules that have been widely studied. Interestingly, some chromodomains are reported to bind to RNA and/or DNA, although the molecular basis of their RNA/DNA interactions has not been solved. Here we propose a novel binding mode for chromodomain-RNA interactions. Essential Sas-related acetyltransferase 1 (Esa1) contains a presumed chromodomain in addition to a histone acetyltransferase domain. We initially determined the solution structure of the Esa1 presumed chromodomain and showed it to consist of a well-folded structure containing a five-stranded beta-barrel similar to the tudor domain rather than the canonical chromodomain. Furthermore, the domain showed no RNA/DNA binding ability. Because the N-terminus of the protein forms a helical turn, we prepared an N-terminally extended construct, which we surprisingly found to bind to poly(U) and to be critical for in vivo function. This extended protein contains an additional beta-sheet that acts as a knot for the tudor domain and binds to oligo(U) and oligo(C) with greater affinity compared with other oligo-RNAs and DNAs examined thus far. The knot does not cause a global change in the core structure but induces a well-defined loop in the tudor domain itself, which is responsible for RNA binding. We made 47 point mutants in an esa1 mutant gene in yeast in which amino acids of the Esa1 knotted tudor domain were substituted to alanine residues and their functional abilities were examined. Interestingly, the knotted tudor domain mutations that were lethal to the yeast lost poly(U) binding ability. Amino acids that are related to RNA interaction sites, as revealed by both NMR and affinity binding experiments, are found to be important in vivo. These findings are the first demonstration of how the novel structure of the knotted tudor domain impacts on RNA binding and how this influences in vivo function.

Novel structural and functional mode of a knot essential for RNA binding activity of the Esa1 presumed chromodomain.,Shimojo H, Sano N, Moriwaki Y, Okuda M, Horikoshi M, Nishimura Y J Mol Biol. 2008 May 16;378(5):987-1001. Epub 2008 Mar 19. PMID:18407291^[10]

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

References

↑ Ikeda K, Steger DJ, Eberharter A, Workman JL. Activation domain-specific and general transcription stimulation by native histone acetyltransferase complexes. Mol Cell Biol. 1999 Jan;19(1):855-63. PMID:9858608
↑ Clarke AS, Lowell JE, Jacobson SJ, Pillus L. Esa1p is an essential histone acetyltransferase required for cell cycle progression. Mol Cell Biol. 1999 Apr;19(4):2515-26. PMID:10082517
↑ Vignali M, Steger DJ, Neely KE, Workman JL. Distribution of acetylated histones resulting from Gal4-VP16 recruitment of SAGA and NuA4 complexes. EMBO J. 2000 Jun 1;19(11):2629-40. PMID:10835360 doi:http://dx.doi.org/10.1093/emboj/19.11.2629
↑ Galarneau L, Nourani A, Boudreault AA, Zhang Y, Heliot L, Allard S, Savard J, Lane WS, Stillman DJ, Cote J. Multiple links between the NuA4 histone acetyltransferase complex and epigenetic control of transcription. Mol Cell. 2000 Jun;5(6):927-37. PMID:10911987
↑ Bird AW, Yu DY, Pray-Grant MG, Qiu Q, Harmon KE, Megee PC, Grant PA, Smith MM, Christman MF. Acetylation of histone H4 by Esa1 is required for DNA double-strand break repair. Nature. 2002 Sep 26;419(6905):411-5. PMID:12353039 doi:http://dx.doi.org/10.1038/nature01035
↑ Nourani A, Utley RT, Allard S, Cote J. Recruitment of the NuA4 complex poises the PHO5 promoter for chromatin remodeling and activation. EMBO J. 2004 Jul 7;23(13):2597-607. Epub 2004 Jun 3. PMID:15175650 doi:http://dx.doi.org/10.1038/sj.emboj.7600230
↑ Robert F, Pokholok DK, Hannett NM, Rinaldi NJ, Chandy M, Rolfe A, Workman JL, Gifford DK, Young RA. Global position and recruitment of HATs and HDACs in the yeast genome. Mol Cell. 2004 Oct 22;16(2):199-209. PMID:15494307 doi:http://dx.doi.org/10.1016/j.molcel.2004.09.021
↑ Kobor MS, Venkatasubrahmanyam S, Meneghini MD, Gin JW, Jennings JL, Link AJ, Madhani HD, Rine J. A protein complex containing the conserved Swi2/Snf2-related ATPase Swr1p deposits histone variant H2A.Z into euchromatin. PLoS Biol. 2004 May;2(5):E131. Epub 2004 Mar 23. PMID:15045029 doi:10.1371/journal.pbio.0020131
↑ Tamburini BA, Tyler JK. Localized histone acetylation and deacetylation triggered by the homologous recombination pathway of double-strand DNA repair. Mol Cell Biol. 2005 Jun;25(12):4903-13. PMID:15923609 doi:http://dx.doi.org/25/12/4903
↑ Shimojo H, Sano N, Moriwaki Y, Okuda M, Horikoshi M, Nishimura Y. Novel structural and functional mode of a knot essential for RNA binding activity of the Esa1 presumed chromodomain. J Mol Biol. 2008 May 16;378(5):987-1001. Epub 2008 Mar 19. PMID:18407291 doi:10.1016/j.jmb.2008.03.021

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/2rnz"

@@ Line 1: / Line 1: @@
 ==Solution structure of the presumed chromodomain of the yeast histone acetyltransferase, Esa1==
 <StructureSection load='2rnz' size='340' side='right' caption='[[2rnz]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2ro0|2ro0]]</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Histone_acetyltransferase Histone acetyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.3.1.48 2.3.1.48] </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=2rnz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2rnz OCA], [http://pdbe.org/2rnz PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2rnz RCSB], [http://www.ebi.ac.uk/pdbsum/2rnz 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=2rnz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2rnz OCA], [http://pdbe.org/2rnz PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2rnz RCSB], [http://www.ebi.ac.uk/pdbsum/2rnz PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2rnz ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 13: / Line 14: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/rn/2rnz_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/rn/2rnz_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>

2rnz

From Proteopedia

Revision as of 11:22, 5 September 2018

Solution structure of the presumed chromodomain of the yeast histone acetyltransferase, Esa1

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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