1w60
From Proteopedia
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| - | [[Image:1w60.gif|left|200px]] | + | [[Image:1w60.gif|left|200px]] |
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| - | '''NATIVE HUMAN PCNA''' | + | {{Structure |
| + | |PDB= 1w60 |SIZE=350|CAPTION= <scene name='initialview01'>1w60</scene>, resolution 3.15Å | ||
| + | |SITE= | ||
| + | |LIGAND= | ||
| + | |ACTIVITY= | ||
| + | |GENE= | ||
| + | }} | ||
| + | |||
| + | '''NATIVE HUMAN PCNA''' | ||
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==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 1W60 is a [ | + | 1W60 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1W60 OCA]. |
==Reference== | ==Reference== | ||
| - | Structural and biochemical studies of human proliferating cell nuclear antigen complexes provide a rationale for cyclin association and inhibitor design., Kontopidis G, Wu SY, Zheleva DI, Taylor P, McInnes C, Lane DP, Fischer PM, Walkinshaw MD, Proc Natl Acad Sci U S A. 2005 Feb 8;102(6):1871-6. Epub 2005 Jan 28. PMID:[http:// | + | Structural and biochemical studies of human proliferating cell nuclear antigen complexes provide a rationale for cyclin association and inhibitor design., Kontopidis G, Wu SY, Zheleva DI, Taylor P, McInnes C, Lane DP, Fischer PM, Walkinshaw MD, Proc Natl Acad Sci U S A. 2005 Feb 8;102(6):1871-6. Epub 2005 Jan 28. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15681588 15681588] |
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: replication]] | [[Category: replication]] | ||
| - | ''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 14:52:39 2008'' |
Revision as of 12:52, 20 March 2008
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| , resolution 3.15Å | |||||||
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| Coordinates: | save as pdb, mmCIF, xml | ||||||
NATIVE HUMAN PCNA
Overview
The interactions between the tumor suppressor protein p21WAF1 and the cyclin-dependent kinase (CDK) complexes and with proliferating cell nuclear antigen (PCNA) regulate and coordinate the processes of cell-cycle progression and DNA replication. We present the x-ray crystal structure of PCNA complexed with a 16-mer peptide related to p21 that binds with a Kd of 100 nM. Two additional crystal structures of native PCNA provide previously undescribed structures of uncomplexed human PCNA and show that significant changes on ligand binding include rigidification of a number of flexible regions on the surface of PCNA. In the competitive binding experiments described here, we show that a 20-mer sequence from p21 can be associated simultaneously with PCNA and CDK/cyclin complexes. A structural model for this quaternary complex is presented in which the C-terminal sequence of p21 acts like double-sided tape and docks to both the PCNA and cyclin molecules. The quaternary complex shows little direct interaction between PCNA and cyclin, giving p21 the role of an adaptor molecule. Taken together, the biochemical and structural results delineate a druggable inhibitor site on the surface of PCNA that may be exploited in the design of peptidomimetics, which will act independently of cyclin-groove inhibitors.
About this Structure
1W60 is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Structural and biochemical studies of human proliferating cell nuclear antigen complexes provide a rationale for cyclin association and inhibitor design., Kontopidis G, Wu SY, Zheleva DI, Taylor P, McInnes C, Lane DP, Fischer PM, Walkinshaw MD, Proc Natl Acad Sci U S A. 2005 Feb 8;102(6):1871-6. Epub 2005 Jan 28. PMID:15681588
Page seeded by OCA on Thu Mar 20 14:52:39 2008
