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The Crystals of acidic phospholipase A2 from the venom of Agkistrodon blomhoffii brevicaudus (i.e. Agkistrodon halys pallas) covalently modified with p-bromo-phenacylbromide were obtained by the method of hanging drop vapor diffusion. Crystallization droplet was composed of 0.06mol?L-1 Na(CH3)2AsO2 (pH=6.5), 24.8% (v/v) 1,4-butanediol, and 4.5mg?mL-1 protein. The crystal data are of a=b=82.82?., c=32.85?, space group P61. 8945 unique reflections with 1.93 ? resolution were measured on a Siemens area detector X-ray diffractometor, of which 8069 reflections having F0 >2σ(F). The experimental results show that the crystals are suitable to a structure analysis of high resolution. 相似文献
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