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2ie4

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[[Image:2ie4.gif|left|200px]]
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[[Image:2ie4.png|left|200px]]
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{{STRUCTURE_2ie4| PDB=2ie4 | SCENE= }}
{{STRUCTURE_2ie4| PDB=2ie4 | SCENE= }}
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'''Structure of the Protein Phosphatase 2A Core Enzyme Bound to okadaic acid'''
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===Structure of the Protein Phosphatase 2A Core Enzyme Bound to okadaic acid===
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==Overview==
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The serine/threonine phosphatase protein phosphatase 2A (PP2A) plays an essential role in many aspects of cellular functions and has been shown to be an important tumor suppressor. The core enzyme of PP2A comprises a 65 kDa scaffolding subunit and a 36 kDa catalytic subunit. Here we report the crystal structures of the PP2A core enzyme bound to two of its inhibitors, the tumor-inducing agents okadaic acid and microcystin-LR, at 2.6 and 2.8 A resolution, respectively. The catalytic subunit recognizes one end of the elongated scaffolding subunit by interacting with the conserved ridges of HEAT repeats 11-15. Formation of the core enzyme forces the scaffolding subunit to undergo pronounced structural rearrangement. The scaffolding subunit exhibits considerable conformational flexibility, which is proposed to play an essential role in PP2A function. These structures, together with biochemical analyses, reveal significant insights into PP2A function and serve as a framework for deciphering the diverse roles of PP2A in cellular physiology.
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(as it appears on PubMed at http://www.pubmed.gov), where 17055435 is the PubMed ID number.
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{{ABSTRACT_PUBMED_17055435}}
==About this Structure==
==About this Structure==
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[[Category: Heat repeat]]
[[Category: Heat repeat]]
[[Category: Protein-protein complex]]
[[Category: Protein-protein complex]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 07:24:17 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 13:02:44 2008''

Revision as of 10:02, 29 July 2008

Image:2ie4.png

Template:STRUCTURE 2ie4

Structure of the Protein Phosphatase 2A Core Enzyme Bound to okadaic acid

Template:ABSTRACT PUBMED 17055435

About this Structure

2IE4 is a Protein complex structure of sequences from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Structure of protein phosphatase 2A core enzyme bound to tumor-inducing toxins., Xing Y, Xu Y, Chen Y, Jeffrey PD, Chao Y, Lin Z, Li Z, Strack S, Stock JB, Shi Y, Cell. 2006 Oct 20;127(2):341-53. PMID:17055435

Page seeded by OCA on Tue Jul 29 13:02:44 2008

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