Crystallization and preliminary X-ray diffraction analysis of the ? subdomain of Lon protease from Brevibacillus thermoruber.

ABSTRACT: DNA-binding ability has previously been reported as a novel function for the thermostable Lon protease from Brevibacillus thermoruber WR-249 (Bt-Lon), and the ? subdomain (amino acids 491-605) of Bt-Lon has been identified as being responsible for DNA binding. However, the physiological role and DNA-recognition mode of Bt-Lon still remain unclear. In this study, the crystallization and preliminary crystallographic analysis of the Bt-Lon ? subdomain are presented. Native diffraction data to 2.88 Å resolution were obtained from a vitrified crystal at 100 K on the BL13C1 beamline at the NSRRC (National Synchrotron Radiation Research Center), Taiwan. The crystals belonged to space group P23, with unit-cell parameters a = b = c = 94.28 Å. Solvent-content calculations and molecular-replacement results suggest that there are two molecules of Bt-Lon ? subdomain per asymmetric unit.

SUBMITTER: Chen YD 

PROVIDER: S-EPMC3729169 | biostudies-literature | 2013 Aug

REPOSITORIES: biostudies-literature