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青霉素G酰化酶的亚基重组 被引量：1

Cross-species heterodimers of penicillin G acylase
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摘要 青霉素G酰化酶在半合成β-内酰胺类抗生素工业中催化关键反应。将来源于Esherichia coli的α亚基分别与Kluyvera citrophila,Providencia rettgeri,Alcaligenes faecalis的β亚基重组得到三种杂合酶,杂合酶表达量随野生型PGA同源性的减小而降低,E.coli和A.faecalis氨基酸序列的相同性低至41%,其杂合酶仍然具有水解3-苯乙酰胺-6-硝基苯甲酸的活力。 Penicillin G acylase （PGA,E. C. 3.5. 1. 11） plays a central role in semi-synthetic β-lactam antibiotics industry. Three cross-species penicillin G amidase genes coding for an α-peptide from Esherichia coli and a β-peptide from Kluyveracitrophila,Providencia rettgeri, Alcaligenes faecalis, respectively, has been constructed and cloned in E. coli. It was found that hydrolysis activity was kept in the hybrid enzymes. The expression level of hybrid enzymes reduced with amino acid （aa）identity of wild type PGA decreasing. Though the PGA of E. coli and A. faecalis share 41 % aa identity,the hybrid enzyme of them expressed in E. coli was active.
作者 张燕 杨晟
机构地区 青岛市药品检验所
出处 《齐鲁药事》 2008年第3期171-174,共4页 qilu pharmaceutical affairs
关键词 青霉素G酰化酶 杂合酶 Penicillin G acylase hybrid cnzyme
分类号 TQ460.6 [化学工程—制药化工]
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参考文献6

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共引文献10

同被引文献18

  • 1杨志建,蔡谨,孙健,袁中一.粪产碱杆菌青霉素G酰化酶在大肠杆菌中组成型表达及分离纯化[J].生物工程学报,2004,20(5):736-740. 被引量：11
  • 2Maregovsi H, Plackova M, Grulich M, et al. Current state and perspectives of penicillin G acylase-based biocatalyses[J]. Applied Microbiology and Biotechnology, 2014, 98(7): 2867- 2879.
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  • 5Rajendran K, Mahadevan S, Jeyaprakash R, et al. Strategies for enhancing the production of penicillin G acylase from Bacillus badius: influence of phenyl acetic acid dosage[J]. Applied Biochemistry and Biotechnology, 2013, 171(6): 1328-1338.
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齐鲁药事
2008年 第3期

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