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Lipase from Pseudomonas glumae has been purified and crystallized in two forms, using the hanging drop method of vapour diffusion at 4 degrees C and 15 degrees C. Both forms grew at pH 9.0 from 0.1 M-Tris buffer in the presence of 10% (v/v) acetone. Form 1 was crystallized from 27 to 29% polyethylene glycol in the presence of less than 0.5% (v/v) n-dodecyl-beta-D-glucopyranoside. Form 2 was grown from 17 to 19% ammonium sulphate in the presence of 1% n-octyl-beta-D-glucopyranoside. Form 1 is orthorhombic with space group P2(1)2(1)2(1), and cell dimensions of a = 158.1 A, b = 158.6 A, c = 63.4 A, Form 2 is tetragonal with space group P4(1)2(1)2 (or P4(3)2(1)2) and cell dimensions of a = 89.3 A, c = 180.4 A. Form 1 probably has four molecules per asymmetric unit and diffracts to at least 2.5 A. Form 2 has two molecules per asymmetric unit and diffracts to at least 3.0 A.

Original publication

DOI

10.1016/0022-2836(92)90593-9

Type

Journal article

Journal

J Mol Biol

Publication Date

05/03/1992

Volume

224

Pages

281 - 282

Keywords

Crystallization, Lipase, Pseudomonas, X-Ray Diffraction