This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.

2rgi

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 11:12, 5 September 2018

Crystal structure of Ca2+-free S100A2 at 1.6 A resolution

Structural highlights

2rgi is a 2 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Gene:	S100A2, S100L (HUMAN)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[S10A2_HUMAN] May act as a modulator against excess calcium accumulation in normal human mammary epithelial cells. May also play a role in suppressing tumor cell growth.^[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

S100A2 is an EF hand-containing Ca(2+)-binding protein of the family of S100 proteins. The protein is localized exclusively in the nucleus and is involved in cell cycle regulation. It attracted most interest by its function as a tumor suppressor via p53 interaction. We determined the crystal structure of homodimeric S100A2 in the Ca(2+)-free state at 1.6-A resolution. The structure revealed structural differences between subunits A and B, especially in the conformation of a loop that connects the N- and C-terminal EF hands and represents a part of the target-binding site in S100 proteins. Analysis of the hydrogen bonding network and molecular dynamics calculations indicate that one of the two observed conformations is more stable. The structure revealed Na(+) bound to each N-terminal EF hand of both subunits coordinated by oxygen atoms of the backbone carbonyl and water molecules. Comparison with the structures of Ca(2+)-free S100A3 and S100A6 suggests that Na(+) might occupy the S100-specific EF hand in the Ca(2+)-free state.

Crystal structure of Ca2+ -free S100A2 at 1.6-A resolution.,Koch M, Diez J, Fritz G J Mol Biol. 2008 May 9;378(4):933-42. Epub 2008 Mar 19. PMID:18394645^[2]

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

References

↑ Lee SW, Tomasetto C, Swisshelm K, Keyomarsi K, Sager R. Down-regulation of a member of the S100 gene family in mammary carcinoma cells and reexpression by azadeoxycytidine treatment. Proc Natl Acad Sci U S A. 1992 Mar 15;89(6):2504-8. PMID:1372446
↑ Koch M, Diez J, Fritz G. Crystal structure of Ca2+ -free S100A2 at 1.6-A resolution. J Mol Biol. 2008 May 9;378(4):933-42. Epub 2008 Mar 19. PMID:18394645 doi:http://dx.doi.org/10.1016/j.jmb.2008.03.019

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/2rgi"

@@ Line 1: / Line 1: @@
 ==Crystal structure of Ca2+-free S100A2 at 1.6 A resolution==
 <StructureSection load='2rgi' size='340' side='right' caption='[[2rgi]], [[Resolution|resolution]] 1.60&Aring;' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=IPA:ISOPROPYL+ALCOHOL'>IPA</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">S100A2, S100L ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=2rgi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2rgi OCA], [http://pdbe.org/2rgi PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2rgi RCSB], [http://www.ebi.ac.uk/pdbsum/2rgi 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=2rgi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2rgi OCA], [http://pdbe.org/2rgi PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2rgi RCSB], [http://www.ebi.ac.uk/pdbsum/2rgi PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2rgi 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/rg/2rgi_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/rg/2rgi_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>

2rgi

From Proteopedia

Revision as of 11:12, 5 September 2018

Crystal structure of Ca2+-free S100A2 at 1.6 A resolution

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox