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首页> 外文期刊>Indian Journal of Biochemistry & Biophysics >Preparation, crystallization and preliminary X-ray crystallographic analysis of OXA-23, a carbapenemase conferring widespread antibiotic resistance
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Preparation, crystallization and preliminary X-ray crystallographic analysis of OXA-23, a carbapenemase conferring widespread antibiotic resistance

机译:OXA-23的制备,结晶和初步X射线晶体分析,碳青霉烯酶OXA-23具有广泛的抗生素耐药性

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OXA-23, a class D carbapenemase that confers widespread antibiotic resistance hydrolyzes the β-lactam rings of β-lactam antibiotics, presenting an enormous challenge to infection control, particularly in the eradication of pathogenic bacteria such as Acinetobacter baumannii, one of six top-priority dangerous pathogens. Thus, the enzyme is a potential target for developing antimicrobial agents against pathogens producing carbapenemases. In this study, OXA-23 was purified and crystallized at 298 K and X-ray diffraction data from OXA-23 crystal were collected at 2.03 ? resolution using synchrotron radiation. The crystal of OXA-23 belonged to space group P41 with unit cell parameters a = 82.47, b = 82.47 and c = 172.01 ?. Analysis of the packing density showed that the asymmetric unit probably contained two molecules with a solvent content of 73.64%.
机译:OXA-23,一种D类碳青霉烯酶,赋予广泛的抗生素抗性,可水解β-内酰胺类抗生素的β-内酰胺环,这对控制感染构成了巨大挑战,尤其是在根除鲍曼不动杆菌等致病细菌方面,这是六个最重要的原因之一。优先考虑危险病原体。因此,该酶是开发针对产生碳青霉烯酶的病原体的抗微生物剂的潜在靶标。在这项研究中,OXA-23在298 K纯化和结晶,从OXA-23晶体收集的X射线衍射数据为2.03?使用同步加速器辐射的分辨率。 OXA-23的晶体属于空间群P41,其晶胞参数a = 82.47,b = 82.47,c =172.01λ。堆积密度的分析表明,不对称单元可能包含两个分子,溶剂含量为73.64%。

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