Crystallization and preliminary crystallographic analysis of LipC12 a true lipase isolated through a metagenomics approach

摘要

LipC12, a true lipase from family I.1 of bacterial lipases which was previously isolated through a metagenomics approach, contains 293 amino acids. Among lipases of known three-dimensional structure, it has a sequence identity of 47% to the lipase from Pseudomonas aeruginosa PAO1. Recombinant N-­terminally His6-tagged LipC12 protein was expressed in Escherichia coli, purified in a homogenous form and crystallized in several conditions, with the best crystals being obtained using 2.0 M sodium formate and 0.1 M bis-tris propane pH 7.0. X-­ray diffraction data were collected to 2.70 Å resolution. The crystals belonged to the tetragonal space group P4122, with unit-cell parameters a = b = 58.62, c = 192.60 Å.