Crystallization and preliminary X-ray diffraction analysis of Xaa-Pro dipeptidase from Xanthomonas campestris.

ABSTRACT: Xaa-Pro dipeptidase (XPD; prolidase; EC 3.4.13.9) specifically hydrolyzes dipeptides with a prolyl residue at the carboxy-terminus. Xanthomonas spp. possess two different isoforms of XPD (48 and 43 kDa) which share ∼24% sequence identity. The XPD of 43 kDa in size (XPD43) from Xanthomonas spp. is unusual as it lacks the strictly conserved tyrosine residue (equivalent to Tyr387 in Escherichia coli aminopeptidase P) that is suggested to be important in the proton-shuttle transfer required for catalysis in the M24B (MEROPS) family. Here, the crystallization and preliminary X-ray analysis of XPD43 from X. campestris (GenBank accession No. NP_637763) are reported. Recombinant XPD43 was crystallized using the microbatch-under-oil technique. Diffraction data were collected on the recently commiss

SUBMITTER: Kumar A 

PROVIDER: S-EPMC4157434 | biostudies-literature | 2014 Sep

REPOSITORIES: biostudies-literature