2i6m: Difference between revisions
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[[Image:2i6m.jpg|left|200px]] | [[Image:2i6m.jpg|left|200px]] | ||
'''Crystal structure of the complexes of the archaeal sulfolobus PTP-fold phosphatase with Tungstate''' | {{Structure | ||
|PDB= 2i6m |SIZE=350|CAPTION= <scene name='initialview01'>2i6m</scene>, resolution 1.9Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=WO4:TUNGSTATE(VI)ION'>WO4</scene> | |||
|ACTIVITY= [http://en.wikipedia.org/wiki/Protein-tyrosine-phosphatase Protein-tyrosine-phosphatase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.3.48 3.1.3.48] | |||
|GENE= | |||
}} | |||
'''Crystal structure of the complexes of the archaeal sulfolobus PTP-fold phosphatase with Tungstate''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
2I6M is a [ | 2I6M is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Sulfolobus_solfataricus Sulfolobus solfataricus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2I6M OCA]. | ||
==Reference== | ==Reference== | ||
Enzyme-substrate interactions revealed by the crystal structures of the archaeal Sulfolobus PTP-fold phosphatase and its phosphopeptide complexes., Chu HM, Wang AH, Proteins. 2007 Mar 1;66(4):996-1003. PMID:[http:// | Enzyme-substrate interactions revealed by the crystal structures of the archaeal Sulfolobus PTP-fold phosphatase and its phosphopeptide complexes., Chu HM, Wang AH, Proteins. 2007 Mar 1;66(4):996-1003. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17173287 17173287] | ||
[[Category: Protein-tyrosine-phosphatase]] | [[Category: Protein-tyrosine-phosphatase]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: ptp domain]] | [[Category: ptp domain]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 17:26:07 2008'' | ||
Revision as of 18:26, 20 March 2008
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| , resolution 1.9Å | |||||||
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| Ligands: | |||||||
| Activity: | Protein-tyrosine-phosphatase, with EC number 3.1.3.48 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal structure of the complexes of the archaeal sulfolobus PTP-fold phosphatase with Tungstate
OverviewOverview
The P-loop-containing protein phos-phatases are important regulators in signal transduction. These enzymes have structural and functional similarity with a conserved sequence of Dx(25-41)HCxxGxxR(T/S) essential for catalysis. The singular protein tyrosine phosphatase (PTP) from archaeal Sulfolobus solfataricus is one of the smallest known PTPs with extreme thermostability. Here, we report the crystal structure of this phosphatase and its complexes with two tyrosyl phosphopeptides A-(p)Y-R and N-K-(p)Y-G-N. The structure suggests the minimal structural motif of the PTP family, having two variable sequences inserted between the beta2-beta3 and beta3-beta4 strands, respectively. The phosphate of both phosphopeptide substrates is bound to the P-loop through several hydrogen bonds. Comparison of several phosphatase-substrate complexes revealed that Gln135 on the Q-loop has different modes of recognition toward phosphopeptides. The substrate specificity of SsoPTP is primarily localized at the phosphotyrosine, suggesting that this phosphatase may be a prototypical PTP.
About this StructureAbout this Structure
2I6M is a Single protein structure of sequence from Sulfolobus solfataricus. Full crystallographic information is available from OCA.
ReferenceReference
Enzyme-substrate interactions revealed by the crystal structures of the archaeal Sulfolobus PTP-fold phosphatase and its phosphopeptide complexes., Chu HM, Wang AH, Proteins. 2007 Mar 1;66(4):996-1003. PMID:17173287
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