1ihg: Difference between revisions

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-[[Image:1ihg.gif|left|200px]]
- {{Structure
+==Bovine Cyclophilin 40, monoclinic form==
-|PDB= 1ihg |SIZE=350|CAPTION= <scene name='initialview01'>1ihg</scene>, resolution 1.80&Aring;
+<StructureSection load='1ihg' size='340' side='right'caption='[[1ihg]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
-|SITE=
+== Structural highlights ==
-|LIGAND= <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>
+<table><tr><td colspan='2'>[[1ihg]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IHG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1IHG FirstGlance]. <br>
-|ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Peptidylprolyl_isomerase Peptidylprolyl isomerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.2.1.8 5.2.1.8] </span>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.8&#8491;</td></tr>
-|GENE=
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene></td></tr>
-|DOMAIN=
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1ihg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ihg OCA], [https://pdbe.org/1ihg PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ihg RCSB], [https://www.ebi.ac.uk/pdbsum/1ihg PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ihg ProSAT]</span></td></tr>
-|RELATEDENTRY=
+</table>
-|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1ihg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ihg OCA], [http://www.ebi.ac.uk/pdbsum/1ihg PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1ihg RCSB]</span>
+== Function ==
-}}
+[https://www.uniprot.org/uniprot/PPID_BOVIN PPID_BOVIN] PPIases accelerate the folding of proteins. It catalyzes the cis-trans isomerization of proline imidic peptide bonds in oligopeptides. Proposed to act as a co-chaperone in HSP90 complexes such as in unligated steroid receptors heterocomplexes. Different co-chaperones seem to compete for association with HSP90 thus establishing distinct HSP90-co-chaperone-receptor complexes with the potential to exert tissue-specific receptor activity control. May have a preference for estrogen receptor complexes and is not found in glucocorticoid receptor complexes. May be involved in cytoplasmic dynein-dependent movement of the receptor from the cytoplasm to the nucleus. May regulate MYB by inhibiting its DNA-binding activity. Involved in regulation of AHR signaling by promoting the formation of the AHR:ARNT dimer; the function is independent of HSP90 but requires the chaperone activity. Involved in regulation of UV radiation-induced apoptosis.<ref>PMID:1544925</ref> <ref>PMID:16650407</ref>
+== Evolutionary Conservation ==
+[[Image:Consurf_key_small.gif|200px|right]]
+Check<jmol>
+  <jmolCheckbox>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ih/1ihg_consurf.spt"</scriptWhenChecked>
+    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
+    <text>to colour the structure by Evolutionary Conservation</text>
+  </jmolCheckbox>
+</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1ihg ConSurf].
+<div style="clear:both"></div>
-'''Bovine Cyclophilin 40, monoclinic form'''
+==See Also==
+*[[Cyclophilin 3D structures|Cyclophilin 3D structures]]
+== References ==
-==Overview==
+<references/>
-BACKGROUND: The "large immunophilin" family consists of domains of cyclophilin or FK506 binding protein linked to a tetratricopeptide (TPR) domain. They are intimately associated with steroid receptor complexes and bind to the C-terminal domain of Hsp90 via the TPR domain. The competitive binding of specific large immunophilins and other TPR-Hsp90 proteins provides a regulatory mechanism for Hsp90 chaperone activity. RESULTS: We have solved the X-ray structures of monoclinic and tetragonal forms of Cyp40. In the monoclinic form, the TPR domain consists of seven helices of variable length incorporating three TPR motifs, which provide a convincing binding surface for the Hsp90 C-terminal MEEVD sequence. The C-terminal residues of Cyp40 protrude out beyond the body of the TPR domain to form a charged helix-the putative calmodulin binding site. However, in the tetragonal form, two of the TPR helices have straightened out to form one extended helix, providing a dramatically different conformation of the molecule. CONCLUSIONS: The X-ray structures are consistent with the role of Cyclophilin 40 as a multifunctional signaling protein involved in a variety of protein-protein interactions. The intermolecular helix-helix interactions in the tetragonal form mimic the intramolecular interactions found in the fully folded monoclinic form. These conserved intra- and intermolecular TPR-TPR interactions are illustrative of a high-fidelity recognition mechanism. The two structures also open up the possibility that partially folded forms of TPR may be important in domain swapping and protein recognition.
+__TOC__
+</StructureSection>
-==About this Structure==
-IHG is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IHG OCA].
-==Reference==
-Two structures of cyclophilin 40: folding and fidelity in the TPR domains., Taylor P, Dornan J, Carrello A, Minchin RF, Ratajczak T, Walkinshaw MD, Structure. 2001 May 9;9(5):431-8. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11377203 11377203]
 [[Category: Bos taurus]]
-[[Category: Peptidylprolyl isomerase]]
+[[Category: Large Structures]]
-[[Category: Single protein]]
+[[Category: Carrello A]]
-[[Category: Carrello, A.]]
+[[Category: Dornan J]]
-[[Category: Dornan, J.]]
+[[Category: Minchin RF]]
-[[Category: Minchin, R F.]]
+[[Category: Ratajczak T]]
-[[Category: Ratajczak, T.]]
+[[Category: Taylor P]]
-[[Category: Taylor, P.]]
+[[Category: Walkinshaw MD]]
-[[Category: Walkinshaw, M D.]]
-[[Category: ppiase immunophilin tetratricopeptide]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 21:19:50 2008''