1hjr
From Proteopedia
| |||||||
| , resolution 2.5Å | |||||||
|---|---|---|---|---|---|---|---|
| Activity: | Crossover junction endodeoxyribonuclease, with EC number 3.1.22.4 | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
ATOMIC STRUCTURE OF THE RUVC RESOLVASE: A HOLLIDAY JUNCTION-SPECIFIC ENDONUCLEASE FROM E. COLI
Overview
The crystal structure of the RuvC protein, a Holliday junction resolvase from E. coli, has been determined at 2.5 A resolution. The enzyme forms a dimer of 19 kDa subunits related by a dyad axis. Together with results from extensive mutational analyses, the refined structure reveals that the catalytic center, comprising four acidic residues, lies at the bottom of a cleft that nicely fits a DNA duplex. The structural features of the dimer, with a 30 A spacing between the two catalytic centers, provide a substantially defined image of the Holliday junction architecture. The folding topology in the vicinity of the catalytic site exhibits a striking similarity to that of RNAase H1 from E. coli.
About this Structure
1HJR is a Single protein structure of sequence from Escherichia coli. Full crystallographic information is available from OCA.
Reference
Atomic structure of the RuvC resolvase: a holliday junction-specific endonuclease from E. coli., Ariyoshi M, Vassylyev DG, Iwasaki H, Nakamura H, Shinagawa H, Morikawa K, Cell. 1994 Sep 23;78(6):1063-72. PMID:7923356
Page seeded by OCA on Sun Mar 30 21:06:17 2008
