Crystallization and preliminary X-ray analysis of the C-type lectin domain of the spicule matrix protein SM50 from Strongylocentrotus purpuratus.

ABSTRACT: Sea urchin spicules have a calcitic mesocrystalline architecture that is closely associated with a matrix of proteins and amorphous minerals. The mechanism underlying spicule formation involves complex processes encompassing spatio-temporally regulated organic-inorganic interactions. C-type lectin domains are present in several spicule matrix proteins in Strongylocentrotus purpuratus, implying their role in spiculogenesis. In this study, the C-type lectin domain of SM50 was overexpressed, purified and crystallized using a vapour-diffusion method. The crystal diffracted to a resolution of 2.85 Å and belonged to space group P212121, with unit-cell parameters a = 100.6, b = 115.4, c = 130.6 Å, ? = ? = ? = 90°. Assuming 50% solvent content, six chains are expected to be present in the asymmetric unit.

SUBMITTER: Juneja P 

PROVIDER: S-EPMC3936458 | biostudies-literature | 2014 Feb

REPOSITORIES: biostudies-literature