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.

1ejf

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 07:20, 20 December 2017

CRYSTAL STRUCTURE OF THE HUMAN CO-CHAPERONE P23

Structural highlights

1ejf 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:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[TEBP_HUMAN] Molecular chaperone that localizes to genomic response elements in a hormone-dependent manner and disrupts receptor-mediated transcriptional activation, by promoting disassembly of transcriptional regulatory complexes.^[1] ^[2] ^[3]

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

p23 is a co-chaperone for the heat shock protein, hsp90. This protein binds hsp90 and participates in the folding of a number of cell regulatory proteins, but its activities are still unclear. We have solved a crystal structure of human p23 lacking 35 residues at the COOH terminus. The structure reveals a disulfide-linked dimer with each subunit containing eight beta-strands in a compact antiparallel beta-sandwich fold. In solution, however, p23 is primarily monomeric and the dimer appears to be a minor component. Conserved residues are clustered on one face of the monomer and define a putative surface region and binding pocket for interaction(s) with hsp90 or protein substrates. p23 contains a COOH-terminal tail that is apparently less structured and is unresolved in the crystal structure. This tail is not needed for the binding of p23 to hsp90 or to complexes with the progesterone receptor. However, the tail is necessary for optimum active chaperoning of the progesterone receptor, as well as the passive chaperoning activity of p23 in assays measuring inhibition of heat-induced protein aggregation.

Crystal structure and activity of human p23, a heat shock protein 90 co-chaperone.,Weaver AJ, Sullivan WP, Felts SJ, Owen BA, Toft DO J Biol Chem. 2000 Jul 28;275(30):23045-52. PMID:10811660^[4]

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

References

↑ Forsythe HL, Jarvis JL, Turner JW, Elmore LW, Holt SE. Stable association of hsp90 and p23, but Not hsp70, with active human telomerase. J Biol Chem. 2001 May 11;276(19):15571-4. Epub 2001 Mar 23. PMID:11274138 doi:10.1074/jbc.C100055200
↑ Freeman BC, Yamamoto KR. Disassembly of transcriptional regulatory complexes by molecular chaperones. Science. 2002 Jun 21;296(5576):2232-5. PMID:12077419 doi:http://dx.doi.org/10.1126/science.1073051
↑ Tanioka T, Nakatani Y, Semmyo N, Murakami M, Kudo I. Molecular identification of cytosolic prostaglandin E2 synthase that is functionally coupled with cyclooxygenase-1 in immediate prostaglandin E2 biosynthesis. J Biol Chem. 2000 Oct 20;275(42):32775-82. PMID:10922363 doi:http://dx.doi.org/10.1074/jbc.M003504200
↑ Weaver AJ, Sullivan WP, Felts SJ, Owen BA, Toft DO. Crystal structure and activity of human p23, a heat shock protein 90 co-chaperone. J Biol Chem. 2000 Jul 28;275(30):23045-52. PMID:10811660 doi:10.1074/jbc.M003410200

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/1ejf"

@@ Line 1: / Line 1: @@
 ==CRYSTAL STRUCTURE OF THE HUMAN CO-CHAPERONE P23==
 <StructureSection load='1ejf' size='340' side='right' caption='[[1ejf]], [[Resolution|resolution]] 2.49&Aring;' scene=''>
@@ Line 4: / Line 5: @@
 <table><tr><td colspan='2'>[[1ejf]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1EJF OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1EJF FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></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=1ejf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ejf OCA], [http://pdbe.org/1ejf PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1ejf RCSB], [http://www.ebi.ac.uk/pdbsum/1ejf 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=1ejf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ejf OCA], [http://pdbe.org/1ejf PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1ejf RCSB], [http://www.ebi.ac.uk/pdbsum/1ejf PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1ejf ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 12: / Line 13: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ej/1ejf_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ej/1ejf_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>

1ejf

From Proteopedia

Revision as of 07:20, 20 December 2017

CRYSTAL STRUCTURE OF THE HUMAN CO-CHAPERONE P23

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox