3s3h: Difference between revisions
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==Crystal structure of the catalytic domain of PTP10D from Drosophila melanogaster with a phosphopeptide substrate GP4== | ==Crystal structure of the catalytic domain of PTP10D from Drosophila melanogaster with a phosphopeptide substrate GP4== | ||
<StructureSection load='3s3h' size='340' side='right' caption='[[3s3h]], [[Resolution|resolution]] 2.80Å' scene=''> | <StructureSection load='3s3h' size='340' side='right'caption='[[3s3h]], [[Resolution|resolution]] 2.80Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[3s3h]] is a 3 chain structure with sequence from [ | <table><tr><td colspan='2'>[[3s3h]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Drome Drome]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3S3H OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3S3H FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=1BO:1-BUTANOL'>1BO</scene>, <scene name='pdbligand=BU1:1,4-BUTANEDIOL'>BU1</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=1BO:1-BUTANOL'>1BO</scene>, <scene name='pdbligand=BU1:1,4-BUTANEDIOL'>BU1</scene></td></tr> | ||
<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=PTR:O-PHOSPHOTYROSINE'>PTR</scene></td></tr> | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=PTR:O-PHOSPHOTYROSINE'>PTR</scene></td></tr> | ||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CG1817, Ptp10D ([ | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CG1817, Ptp10D ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=7227 DROME])</td></tr> | ||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Protein-tyrosine-phosphatase Protein-tyrosine-phosphatase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.3.48 3.1.3.48] </span></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3s3h FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3s3h OCA], [https://pdbe.org/3s3h PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3s3h RCSB], [https://www.ebi.ac.uk/pdbsum/3s3h PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3s3h ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[[ | [[https://www.uniprot.org/uniprot/PTP10_DROME PTP10_DROME]] May have a role in axon outgrowth and guidance.<ref>PMID:1657401</ref> | ||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
== Publication Abstract from PubMed == | == Publication Abstract from PubMed == | ||
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==See Also== | ==See Also== | ||
*[[Tyrosine phosphatase|Tyrosine phosphatase]] | *[[Tyrosine phosphatase 3D structures|Tyrosine phosphatase 3D structures]] | ||
== References == | == References == | ||
<references/> | <references/> | ||
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</StructureSection> | </StructureSection> | ||
[[Category: Drome]] | [[Category: Drome]] | ||
[[Category: Large Structures]] | |||
[[Category: Protein-tyrosine-phosphatase]] | [[Category: Protein-tyrosine-phosphatase]] | ||
[[Category: Gopal, B]] | [[Category: Gopal, B]] | ||
Revision as of 13:36, 22 June 2022
Crystal structure of the catalytic domain of PTP10D from Drosophila melanogaster with a phosphopeptide substrate GP4Crystal structure of the catalytic domain of PTP10D from Drosophila melanogaster with a phosphopeptide substrate GP4
Structural highlights
Function[PTP10_DROME] May have a role in axon outgrowth and guidance.[1] Publication Abstract from PubMedThe coordinated activity of protein tyrosine phosphatases (PTPs) is crucial for the initiation, modulation, and termination of diverse cellular processes. The catalytic activity of this protein depends on a nucleophilic cysteine at the active site that mediates the hydrolysis of the incoming phosphotyrosine substrate. While the role of conserved residues in the catalytic mechanism of PTPs has been extensively examined, the diversity in the mechanisms of substrate recognition and modulation of catalytic activity suggests that other, less conserved sequence and structural features could contribute to this process. Here we describe the crystal structures of Drosophila melanogaster PTP10D in the apo form as well as in a complex with a substrate peptide and an inhibitor. These studies reveal the role of aromatic ring stacking interactions at the boundary of the active site of PTPs in mediating substrate recruitment. We note that phenylalanine 76, of the so-called KNRY loop, is crucial for orienting the phosphotyrosine residue toward the nucleophilic cysteine. Mutation of phenylalanine 76 to leucine results in a 60-fold decrease in the catalytic efficiency of the enzyme. Fluorescence measurements with a competitive inhibitor, p-nitrocatechol sulfate, suggest that Phe76 also influences the formation of the enzyme-substrate intermediate. The structural and biochemical data for PTP10D thus highlight the role of relatively less conserved residues in PTP domains in both substrate recruitment and modulation of reaction kinetics. Conformational Basis for Substrate Recruitment in Protein Tyrosine Phosphatase 10D.,Madan LL, Gopal B Biochemistry. 2011 Oct 27. PMID:22007620[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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