地衣芽孢杆菌749/C胞外β-内酰胺酶的结晶及初步X射线数据
Crystallization and preliminary X-ray data for the exocellular beta-lactamase of Bacillus licheniformis 749/C.
作者信息
Dideberg O, Libert M, Frère J M, Charlier P, Zhao H, Knox J R
出版信息
J Mol Biol. 1985 Jan 5;181(1):145-6. doi: 10.1016/0022-2836(85)90333-x.
PMID:3872374
Abstract
The exocellular beta-lactamase from Bacillus licheniformis 749/C has been crystallized from polyethylene glycol solution at pH 5.5. An X-ray examination of the monoclinic crystals shows the space group is P21, with unit cell dimensions a = 66.77 A, b = 93.77 A, c = 43.57 A and beta = 104.5 degrees. The asymmetric unit consists of two molecules of 28,500 Mr each. The crystals are suitable for structure analysis to at least 2 A resolution.
摘要
地衣芽孢杆菌749/C的胞外β-内酰胺酶已在pH 5.5的聚乙二醇溶液中结晶。对单斜晶体的X射线检查表明，空间群为P21，晶胞参数为a = 66.77 Å，b = 93.77 Å，c = 43.57 Å，β = 104.5°。不对称单元由两个分子量均为28,500的分子组成。这些晶体适用于至少2 Å分辨率的结构分析。
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