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1s9h
From Proteopedia
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| , resolution 2.40Å | |||||||
|---|---|---|---|---|---|---|---|
| Gene: | REP (adeno-associated virus 2) | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal Structure of Adeno-associated virus Type 2 Rep40
Overview
We report here the crystal structure of an SF3 DNA helicase, Rep40, from adeno-associated virus 2 (AAV2). We show that AAV2 Rep40 is structurally more similar to the AAA(+) class of cellular proteins than to DNA helicases from other superfamilies. The structure delineates the expected Walker A and B motifs, but also reveals an unexpected "arginine finger" that directly implies the requirement of Rep40 oligomerization for ATP hydrolysis and helicase activity. Further, the Rep40 AAA(+) domain is novel in that it is unimodular as opposed to bimodular. Altogether, the structural connection to AAA(+) proteins defines the general architecture of SF3 DNA helicases, a family that includes simian virus 40 (SV40) T antigen, as well as provides a conceptual framework for understanding the role of Rep proteins during AAV DNA replication, packaging, and site-specific integration.
About this Structure
1S9H is a Single protein structure of sequence from Adeno-associated virus 2. Full crystallographic information is available from OCA.
Reference
Crystal structure of the SF3 helicase from adeno-associated virus type 2., James JA, Escalante CR, Yoon-Robarts M, Edwards TA, Linden RM, Aggarwal AK, Structure. 2003 Aug;11(8):1025-35. PMID:12906833
Page seeded by OCA on Sun Mar 30 23:39:05 2008
