2hv7

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{{STRUCTURE_2hv7| PDB=2hv7 | SCENE= }}
{{STRUCTURE_2hv7| PDB=2hv7 | SCENE= }}
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'''Crystal structure of phosphotyrosyl phosphatase activator bound to ATPgammaS'''
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===Crystal structure of phosphotyrosyl phosphatase activator bound to ATPgammaS===
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==Overview==
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Phosphotyrosyl phosphatase activator (PTPA), also known as PP2A phosphatase activator, is a conserved protein from yeast to human. Here we report the 1.9 A crystal structure of human PTPA, which reveals a previously unreported fold consisting of three subdomains: core, lid, and linker. Structural analysis uncovers a highly conserved surface patch, which borders the three subdomains, and an associated deep pocket located between the core and the linker subdomains. The conserved surface patch and the deep pocket are responsible for binding to PP2A and ATP, respectively. PTPA and PP2A A-C dimer together constitute a composite ATPase. PTPA binding to PP2A results in a dramatic alteration of substrate specificity, with enhanced phosphotyrosine phosphatase activity and decreased phosphoserine phosphatase activity. This function of PTPA strictly depends on the composite ATPase activity. These observations reveal significant insights into the function and mechanism of PTPA and have important ramifications for understanding PP2A function.
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(as it appears on PubMed at http://www.pubmed.gov), where 16916641 is the PubMed ID number.
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{{ABSTRACT_PUBMED_16916641}}
==About this Structure==
==About this Structure==
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[[Category: Phosphotyrosyl phosphatase activator]]
[[Category: Phosphotyrosyl phosphatase activator]]
[[Category: Pp2a]]
[[Category: Pp2a]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 06:45:04 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 14:14:52 2008''

Revision as of 11:14, 29 July 2008

Image:2hv7.png

Template:STRUCTURE 2hv7

Crystal structure of phosphotyrosyl phosphatase activator bound to ATPgammaS

Template:ABSTRACT PUBMED 16916641

About this Structure

2HV7 is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Structure and mechanism of the phosphotyrosyl phosphatase activator., Chao Y, Xing Y, Chen Y, Xu Y, Lin Z, Li Z, Jeffrey PD, Stock JB, Shi Y, Mol Cell. 2006 Aug;23(4):535-46. PMID:16916641

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