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2q44

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Revision as of 08:53, 29 August 2018

Ensemble refinement of the protein crystal structure of gene product from Arabidopsis thaliana At1g77540

Structural highlights

2q44 is a 1 chain structure with sequence from Arath. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Related:	1xmt
Gene:	At1g77540, T5M16.13 (ARATH)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[Y1754_ARATH] Possesses in vitro histone acetyltransferase activity with histones H3 and H4.^[1]

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

X-ray crystallography typically uses a single set of coordinates and B factors to describe macromolecular conformations. Refinement of multiple copies of the entire structure has been previously used in specific cases as an alternative means of representing structural flexibility. Here, we systematically validate this method by using simulated diffraction data, and we find that ensemble refinement produces better representations of the distributions of atomic positions in the simulated structures than single-conformer refinements. Comparison of principal components calculated from the refined ensembles and simulations shows that concerted motions are captured locally, but that correlations dissipate over long distances. Ensemble refinement is also used on 50 experimental structures of varying resolution and leads to decreases in R(free) values, implying that improvements in the representation of flexibility observed for the simulated structures may apply to real structures. These gains are essentially independent of resolution or data-to-parameter ratio, suggesting that even structures at moderate resolution can benefit from ensemble refinement.

Ensemble refinement of protein crystal structures: validation and application.,Levin EJ, Kondrashov DA, Wesenberg GE, Phillips GN Jr Structure. 2007 Sep;15(9):1040-52. PMID:17850744^[2]

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

References

↑ Tyler RC, Bitto E, Berndsen CE, Bingman CA, Singh S, Lee MS, Wesenberg GE, Denu JM, Phillips GN Jr, Markley JL. Structure of Arabidopsis thaliana At1g77540 protein, a minimal acetyltransferase from the COG2388 family. Biochemistry. 2006 Dec 5;45(48):14325-36. PMID:17128971 doi:10.1021/bi0612059
↑ Levin EJ, Kondrashov DA, Wesenberg GE, Phillips GN Jr. Ensemble refinement of protein crystal structures: validation and application. Structure. 2007 Sep;15(9):1040-52. PMID:17850744 doi:http://dx.doi.org/10.1016/j.str.2007.06.019

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/2q44"

@@ Line 1: / Line 1: @@
 ==Ensemble refinement of the protein crystal structure of gene product from Arabidopsis thaliana At1g77540==
 <StructureSection load='2q44' size='340' side='right' caption='[[2q44]], [[Resolution|resolution]] 1.15&Aring;' scene=''>
@@ Line 6: / Line 7: @@
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1xmt|1xmt]]</td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">At1g77540, T5M16.13 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=3702 ARATH])</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=2q44 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2q44 OCA], [http://pdbe.org/2q44 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2q44 RCSB], [http://www.ebi.ac.uk/pdbsum/2q44 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=2q44 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2q44 OCA], [http://pdbe.org/2q44 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2q44 RCSB], [http://www.ebi.ac.uk/pdbsum/2q44 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2q44 ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 14: / Line 15: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/q4/2q44_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/q4/2q44_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>

2q44

From Proteopedia

Revision as of 08:53, 29 August 2018

Ensemble refinement of the protein crystal structure of gene product from Arabidopsis thaliana At1g77540

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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