1gh6
From Proteopedia
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|ACTIVITY= | |ACTIVITY= | ||
|GENE= | |GENE= | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY= | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1gh6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1gh6 OCA], [http://www.ebi.ac.uk/pdbsum/1gh6 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1gh6 RCSB]</span> | ||
}} | }} | ||
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==Overview== | ==Overview== | ||
Inactivation of the retinoblastoma (Rb) tumor suppressor by Simian virus 40 (SV40) large T antigen is one of the central features of tumorigenesis induced by SV40. Both the N-terminal J domain and the LxCxE motif of large T antigen are required for inactivation of Rb. The crystal structure of the N-terminal region (residues 7-117) of SV40 large T antigen bound to the pocket domain of Rb reveals that large T antigen contains a four-helix bundle, and residues from helices alpha2 and alpha4 and from a loop containing the LxCxE motif participate in the interactions with Rb. The two central helices and a connecting loop in large T antigen have structural similarities with the J domains of the molecular chaperones DnaJ and HDJ-1, suggesting that large T antigen may use a chaperone mechanism for its biological function. However, there are significant differences between large T antigen and the molecular chaperones in other regions and these differences are likely to provide the specificity needed for large T antigen to inactivate Rb. | Inactivation of the retinoblastoma (Rb) tumor suppressor by Simian virus 40 (SV40) large T antigen is one of the central features of tumorigenesis induced by SV40. Both the N-terminal J domain and the LxCxE motif of large T antigen are required for inactivation of Rb. The crystal structure of the N-terminal region (residues 7-117) of SV40 large T antigen bound to the pocket domain of Rb reveals that large T antigen contains a four-helix bundle, and residues from helices alpha2 and alpha4 and from a loop containing the LxCxE motif participate in the interactions with Rb. The two central helices and a connecting loop in large T antigen have structural similarities with the J domains of the molecular chaperones DnaJ and HDJ-1, suggesting that large T antigen may use a chaperone mechanism for its biological function. However, there are significant differences between large T antigen and the molecular chaperones in other regions and these differences are likely to provide the specificity needed for large T antigen to inactivate Rb. | ||
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| - | ==Disease== | ||
| - | Known diseases associated with this structure: Bladder cancer OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=180200 180200]], Osteosarcoma OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=180200 180200]], Pinealoma with bilateral retinoblastoma OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=180200 180200]], Retinoblastoma OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=180200 180200]] | ||
==About this Structure== | ==About this Structure== | ||
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[[Category: tumor suppressor]] | [[Category: tumor suppressor]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 20:43:51 2008'' |
Revision as of 17:43, 30 March 2008
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| , resolution 3.2Å | |||||||
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| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
RETINOBLASTOMA POCKET COMPLEXED WITH SV40 LARGE T ANTIGEN
Overview
Inactivation of the retinoblastoma (Rb) tumor suppressor by Simian virus 40 (SV40) large T antigen is one of the central features of tumorigenesis induced by SV40. Both the N-terminal J domain and the LxCxE motif of large T antigen are required for inactivation of Rb. The crystal structure of the N-terminal region (residues 7-117) of SV40 large T antigen bound to the pocket domain of Rb reveals that large T antigen contains a four-helix bundle, and residues from helices alpha2 and alpha4 and from a loop containing the LxCxE motif participate in the interactions with Rb. The two central helices and a connecting loop in large T antigen have structural similarities with the J domains of the molecular chaperones DnaJ and HDJ-1, suggesting that large T antigen may use a chaperone mechanism for its biological function. However, there are significant differences between large T antigen and the molecular chaperones in other regions and these differences are likely to provide the specificity needed for large T antigen to inactivate Rb.
About this Structure
1GH6 is a Protein complex structure of sequences from Homo sapiens and Simian virus 40. The following page contains interesting information on the relation of 1GH6 with [Simian Virus 40]. Full crystallographic information is available from OCA.
Reference
Structural basis for the inactivation of retinoblastoma tumor suppressor by SV40 large T antigen., Kim HY, Ahn BY, Cho Y, EMBO J. 2001 Jan 15;20(1-2):295-304. PMID:11226179
Page seeded by OCA on Sun Mar 30 20:43:51 2008
