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| | ==Structural and biochemical characterization of a cytosolic wheat cyclophilin TaCypA-1== | | ==Structural and biochemical characterization of a cytosolic wheat cyclophilin TaCypA-1== |
| - | <StructureSection load='4hy7' size='340' side='right' caption='[[4hy7]], [[Resolution|resolution]] 1.20Å' scene=''> | + | <StructureSection load='4hy7' size='340' side='right'caption='[[4hy7]], [[Resolution|resolution]] 1.20Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4hy7]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Canadian_hard_winter_wheat Canadian hard winter wheat] and [http://en.wikipedia.org/wiki/Tolypocladium_inflatum Tolypocladium inflatum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4HY7 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4HY7 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4hy7]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Tolypocladium_inflatum Tolypocladium inflatum] and [https://en.wikipedia.org/wiki/Triticum_aestivum Triticum aestivum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4HY7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4HY7 FirstGlance]. <br> |
| - | </td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=ABA:ALPHA-AMINOBUTYRIC+ACID'>ABA</scene>, <scene name='pdbligand=BMT:4-METHYL-4-[(E)-2-BUTENYL]-4,N-METHYL-THREONINE'>BMT</scene>, <scene name='pdbligand=DAL:D-ALANINE'>DAL</scene>, <scene name='pdbligand=MLE:N-METHYLLEUCINE'>MLE</scene>, <scene name='pdbligand=MVA:N-METHYLVALINE'>MVA</scene>, <scene name='pdbligand=SAR:SARCOSINE'>SAR</scene></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ABA:ALPHA-AMINOBUTYRIC+ACID'>ABA</scene>, <scene name='pdbligand=BMT:4-METHYL-4-[(E)-2-BUTENYL]-4,N-METHYL-THREONINE'>BMT</scene>, <scene name='pdbligand=DAL:D-ALANINE'>DAL</scene>, <scene name='pdbligand=MLE:N-METHYLLEUCINE'>MLE</scene>, <scene name='pdbligand=MVA:N-METHYLVALINE'>MVA</scene>, <scene name='pdbligand=SAR:SARCOSINE'>SAR</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4e1q|4e1q]]</td></tr>
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4hy7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4hy7 OCA], [https://pdbe.org/4hy7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4hy7 RCSB], [https://www.ebi.ac.uk/pdbsum/4hy7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4hy7 ProSAT]</span></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CyP3, CyP1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4565 Canadian hard winter wheat])</td></tr>
| + | |
| - | <tr id='activity'><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 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=4hy7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4hy7 OCA], [http://pdbe.org/4hy7 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4hy7 RCSB], [http://www.ebi.ac.uk/pdbsum/4hy7 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4hy7 ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/Q93W25_WHEAT Q93W25_WHEAT]] PPIases accelerate the folding of proteins (By similarity).[RuleBase:RU000493] PPIases accelerate the folding of proteins. It catalyzes the cis-trans isomerization of proline imidic peptide bonds in oligopeptides (By similarity).[RuleBase:RU004223] | + | [https://www.uniprot.org/uniprot/Q93W25_WHEAT Q93W25_WHEAT] PPIases accelerate the folding of proteins (By similarity).[RuleBase:RU000493] PPIases accelerate the folding of proteins. It catalyzes the cis-trans isomerization of proline imidic peptide bonds in oligopeptides (By similarity).[RuleBase:RU004223] |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Canadian hard winter wheat]] | + | [[Category: Large Structures]] |
| - | [[Category: Peptidylprolyl isomerase]]
| + | |
| | [[Category: Tolypocladium inflatum]] | | [[Category: Tolypocladium inflatum]] |
| - | [[Category: Jeong, D G]] | + | [[Category: Triticum aestivum]] |
| - | [[Category: Pareek, A]] | + | [[Category: Jeong DG]] |
| - | [[Category: Sekhon, S S]] | + | [[Category: Pareek A]] |
| - | [[Category: Singh, P]] | + | [[Category: Sekhon SS]] |
| - | [[Category: Woo, E J]] | + | [[Category: Singh P]] |
| - | [[Category: Yoon, T S]] | + | [[Category: Woo EJ]] |
| - | [[Category: Isomerase]]
| + | [[Category: Yoon T-S]] |
| - | [[Category: Isomerase-inhibitor complex]]
| + | |
| Structural highlights
4hy7 is a 2 chain structure with sequence from Tolypocladium inflatum and Triticum aestivum. 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
Q93W25_WHEAT PPIases accelerate the folding of proteins (By similarity).[RuleBase:RU000493] PPIases accelerate the folding of proteins. It catalyzes the cis-trans isomerization of proline imidic peptide bonds in oligopeptides (By similarity).[RuleBase:RU004223]
Publication Abstract from PubMed
Cyclophilins belong to a family of proteins that bind to the immunosuppressive drug cyclosporin A (CsA). Several members of this protein family catalyze the cis-trans isomerization of peptide bonds preceding prolyl residues. The present study describes the biochemical and structural characteristics of a cytosolic cyclophilin (TaCypA-1) cloned from wheat (Triticum aestivum L.). Purified TaCypA-1 expressed in Escherichia coli showed peptidyl-prolyl cis-trans isomerase activity, which was inhibited by CsA with an inhibition constant of 78.3 nM. The specific activity and catalytic efficiency (kcat/Km) of the purified TaCypA-1 were 99.06 +/- 0.13 nmol s(-1) mg(-1) and 2.32 x 10(5) M(-1) s(-1), respectively. The structures of apo TaCypA-1 and the TaCypA-1-CsA complex were determined at 1.25 and 1.20 A resolution, respectively, using X-ray diffraction. Binding of CsA to the active site of TaCypA-1 did not result in any significant conformational change in the apo TaCypA-1 structure. This is consistent with the crystal structure of the human cyclophilin D-CsA complex reported at 0.96 A resolution. The TaCypA-1 structure revealed the presence of a divergent loop of seven amino acids (48)KSGKPLH(54) which is a characteristic feature of plant cyclophilins. This study is the first to elucidate the structure of an enzymatically active plant cyclophilin which shows peptidyl-prolyl cis-trans isomerase activity and the presence of a divergent loop.
Structural and biochemical characterization of the cytosolic wheat cyclophilin TaCypA-1.,Sekhon SS, Kaur H, Dutta T, Singh K, Kumari S, Kang S, Park SG, Park BC, Jeong DG, Pareek A, Woo EJ, Singh P, Yoon TS Acta Crystallogr D Biol Crystallogr. 2013 Apr;69(Pt 4):555-63. doi:, 10.1107/S0907444912051529. Epub 2013 Mar 9. PMID:23519664[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Sekhon SS, Kaur H, Dutta T, Singh K, Kumari S, Kang S, Park SG, Park BC, Jeong DG, Pareek A, Woo EJ, Singh P, Yoon TS. Structural and biochemical characterization of the cytosolic wheat cyclophilin TaCypA-1. Acta Crystallogr D Biol Crystallogr. 2013 Apr;69(Pt 4):555-63. doi:, 10.1107/S0907444912051529. Epub 2013 Mar 9. PMID:23519664 doi:10.1107/S0907444912051529
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