1pin: Difference between revisions

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-[[Image:1pin.gif|left|200px]]<br /><applet load="1pin" size="350" color="white" frame="true" align="right" spinBox="true"
-caption="1pin, resolution 1.35&Aring;" />
-'''PIN1 PEPTIDYL-PROLYL CIS-TRANS ISOMERASE FROM HOMO SAPIENS'''<br />
-==Overview==
+==PIN1 PEPTIDYL-PROLYL CIS-TRANS ISOMERASE FROM HOMO SAPIENS==
-The human rotamase or peptidyl-prolyl cis-trans isomerase Pin1 is a, conserved mitotic regulator essential for the G2/M transition of the, eukaryotic cell cycle. We report the 1.35 A crystal structure of Pin1, complexed with an AlaPro dipeptide and the initial characterization of, Pin1's functional properties. The crystallographic structure as well as pH, titration studies and mutagenesis of an active site cysteine suggest a, catalytic mechanism that includes general acid-base and covalent catalysis, during peptide bond isomerization. Pin1 displays a preference for an, acidic residue N-terminal to the isomerized proline bond due to, interaction of this acidic side chain with a basic cluster. This raises, the possibility of phosphorylation-mediated control of Pin1-substrate, interactions in cell cycle regulation.
+<StructureSection load='1pin' size='340' side='right'caption='[[1pin]], [[Resolution|resolution]] 1.35&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[1pin]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PIN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1PIN FirstGlance]. <br>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.35&#8491;</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=1PG:2-(2-{2-[2-(2-METHOXY-ETHOXY)-ETHOXY]-ETHOXY}-ETHOXY)-ETHANOL'>1PG</scene>, <scene name='pdbligand=ALA:ALANINE'>ALA</scene>, <scene name='pdbligand=PRO:PROLINE'>PRO</scene>, <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'>[https://proteopedia.org/fgij/fg.htm?mol=1pin FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1pin OCA], [https://pdbe.org/1pin PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1pin RCSB], [https://www.ebi.ac.uk/pdbsum/1pin PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1pin ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/PIN1_HUMAN PIN1_HUMAN] Essential PPIase that regulates mitosis presumably by interacting with NIMA and attenuating its mitosis-promoting activity. Displays a preference for an acidic residue N-terminal to the isomerized proline bond. Catalyzes pSer/Thr-Pro cis/trans isomerizations. Down-regulates kinase activity of BTK. Can transactivate multiple oncogenes and induce centrosome amplification, chromosome instability and cell transformation. Required for the efficient dephosphorylation and recycling of RAF1 after mitogen activation.<ref>PMID:15664191</ref> <ref>PMID:16644721</ref> <ref>PMID:21497122</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/pi/1pin_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=1pin ConSurf].
+<div style="clear:both"></div>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+The human rotamase or peptidyl-prolyl cis-trans isomerase Pin1 is a conserved mitotic regulator essential for the G2/M transition of the eukaryotic cell cycle. We report the 1.35 A crystal structure of Pin1 complexed with an AlaPro dipeptide and the initial characterization of Pin1's functional properties. The crystallographic structure as well as pH titration studies and mutagenesis of an active site cysteine suggest a catalytic mechanism that includes general acid-base and covalent catalysis during peptide bond isomerization. Pin1 displays a preference for an acidic residue N-terminal to the isomerized proline bond due to interaction of this acidic side chain with a basic cluster. This raises the possibility of phosphorylation-mediated control of Pin1-substrate interactions in cell cycle regulation.
-==About this Structure==
+Structural and functional analysis of the mitotic rotamase Pin1 suggests substrate recognition is phosphorylation dependent.,Ranganathan R, Lu KP, Hunter T, Noel JP Cell. 1997 Jun 13;89(6):875-86. PMID:9200606<ref>PMID:9200606</ref>
-PIN is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] with <scene name='pdbligand=SO4:'>SO4</scene> and <scene name='pdbligand=1PG:'>1PG</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [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] Known structural/functional Site: <scene name='pdbsite=ACT:The+Active+Site+Of+Ppiase+Domain+Is+Marked+By+The+Bound+...'>ACT</scene>. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PIN OCA].
-==Reference==
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-Structural and functional analysis of the mitotic rotamase Pin1 suggests substrate recognition is phosphorylation dependent., Ranganathan R, Lu KP, Hunter T, Noel JP, Cell. 1997 Jun 13;89(6):875-86. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=9200606 9200606]
+</div>
+<div class="pdbe-citations 1pin" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Peptidyl-prolyl cis-trans isomerase 3D structures|Peptidyl-prolyl cis-trans isomerase 3D structures]]
+== References ==
+<references/>
+__TOC__
+</StructureSection>
 [[Category: Homo sapiens]]
-[[Category: Peptidylprolyl isomerase]]
+[[Category: Large Structures]]
-[[Category: Single protein]]
+[[Category: Hunter T]]
-[[Category: Hunter, T.]]
+[[Category: Noel JP]]
-[[Category: Noel, J.P.]]
+[[Category: Ranganathan R]]
-[[Category: Ranganathan, R.]]
-[[Category: 1PG]]
-[[Category: SO4]]
-[[Category: complex (isomerase/dipeptide)]]
-[[Category: peptidyl-prolyl cis-trans isomerase]]
-[[Category: rotamase]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Feb  3 10:00:00 2008''