Crystallization and preliminary X-ray diffraction analysis of Trap1 complexed with Hsp90 inhibitors.

ABSTRACT: Hsp90 is a molecular chaperone responsible for the assembly and regulation of many cellular client proteins. In particular, Trap1, a mitochondrial Hsp90 homologue, plays a pivotal role in maintaining mitochondrial integrity, protecting against apoptosis in cancer cells. The N (N-terminal)-M (middle) domain of human Trap1 was crystallized in complex with Hsp90 inhibitors (PU-H71 and BIIB-021) by the hanging-drop vapour-diffusion method at pH 6.5 and 293?K using 15% PEG 8K as a precipitant. Diffraction data were collected from crystals of the Trap1-PU-H71 (2.7?Å) and Trap1-BIIB-021 (3.1?Å) complexes to high resolution at a synchrotron-radiation source. Preliminary X-ray diffraction analysis revealed that both crystals belonged to space group P41212 or P43212, with unit-cell parameters a = b = 69.2, c = 252.5?Å, and contained one molecule per asymmetric unit according to Matthews coefficient calculations.

SUBMITTER: Jeong H 

PROVIDER: S-EPMC4259240 | biostudies-literature | 2014 Dec

REPOSITORIES: biostudies-literature