1h0p: Difference between revisions

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[[Image:1h0p.png|left|200px]]
==CYCLOPHILIN_5 FROM C. ELEGANS==
<StructureSection load='1h0p' size='340' side='right' caption='[[1h0p]], [[Resolution|resolution]] 1.75&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1h0p]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Caenorhabditis_elegans Caenorhabditis elegans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1H0P OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1H0P FirstGlance]. <br>
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=DTT:2,3-DIHYDROXY-1,4-DITHIOBUTANE'>DTT</scene><br>
<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><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><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1h0p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1h0p OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1h0p RCSB], [http://www.ebi.ac.uk/pdbsum/1h0p PDBsum]</span></td></tr>
<table>
== 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/h0/1h0p_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/chain_selection.php?pdb_ID=2ata ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The free-living nematode Caenorhabditis elegans expresses 18 cyclophilin isoforms, eight of which are conserved single domain forms, comprising two closely related secreted or type B forms (CYP-5 and CYP-6). Recombinant CYP-5 has been purified, crystallised and the X-ray structure solved to a resolution of 1.75A. The detailed molecular architecture most strongly resembles the structure of human cyclophilin B with conserved changes in loop structure and N and C-terminal extensions. Interestingly, the active site pocket is occupied by a molecule of dithiothreitol though this has little effect on the geometry of the active site which is similar to other cyclophilin structures. The peptidyl-prolyl isomerase activity of CYP-5 has been characterised against the substrate N-succinyl-Ala-Ala-Pro-Phe-p-nitroanilide, and gives a k(cat)/K(m) value of 3.6x10(6)M(-1)s(-1) that compares with a value of 6.3x10(6)M(-1)s(-1) for human cyclophilin B. The immunosuppressive drug cyclosporin A binds and inhibits CYP-5 with an IC(50) value of 50nM, which is comparable to the value of 84nM found for human cyclophilin B. CYP-6 has 67% sequence identity with CYP-5 and a molecular model was built based on the CYP-5 crystal structure. The model shows that CYP-5 and CYP-6 are likely to have very similar structures, but with a markedly increased number of negative charges distributed around the surface of CYP-6. The spatial expression patterns of the cyclophilin B isoforms were examined using transgenic animals carrying a LacZ reporter fusion to these genes, and both cyp-5 and cyp-6 are found to be expressed in an overlapping fashion in the nematode gut. The temporal expression pattern of cyp-5 was further determined and revealed a constitutive expression pattern, with highest abundance levels being found in the embryo.


{{STRUCTURE_1h0p|  PDB=1h0p  |  SCENE=  }}
Structural and biological characterisation of the gut-associated cyclophilin B isoforms from Caenorhabditis elegans.,Picken NC, Eschenlauer S, Taylor P, Page AP, Walkinshaw MD J Mol Biol. 2002 Sep 6;322(1):15-25. PMID:12215411<ref>PMID:12215411</ref>


===CYCLOPHILIN_5 FROM C. ELEGANS===
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 
</div>
{{ABSTRACT_PUBMED_12215411}}
 
==About this Structure==
[[1h0p]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Caenorhabditis_elegans Caenorhabditis elegans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1H0P OCA].


==See Also==
==See Also==
*[[Cyclophilin|Cyclophilin]]
*[[Cyclophilin|Cyclophilin]]
 
== References ==
==Reference==
<references/>
<ref group="xtra">PMID:012215411</ref><references group="xtra"/>
__TOC__
</StructureSection>
[[Category: Caenorhabditis elegans]]
[[Category: Caenorhabditis elegans]]
[[Category: Peptidylprolyl isomerase]]
[[Category: Peptidylprolyl isomerase]]
Retrieved from "https://proteopedia.org/1h0p"