Suppr超能文献

来自黏金黄杆菌的安布勒A类超广谱β-内酰胺酶CGA-1的分子和生化特征

Molecular and biochemical characterization of Ambler class A extended-spectrum beta-lactamase CGA-1 from Chryseobacterium gleum.

作者信息

Bellais Samuel, Naas Thierry, Nordmann Patrice

机构信息

Service de Bactériologie-Virologie, Hôpital de Bicêtre, Assistance Publique/Hôpitaux de Paris, Faculté de Médecine Paris-Sud, 94275 Le Kremlin-Bicêtre Cedex, France.

出版信息

Antimicrob Agents Chemother. 2002 Apr;46(4):966-70. doi: 10.1128/AAC.46.4.966-970.2002.

Abstract

Antibiotic susceptibility testing by disk diffusion of a Chryseobacterium gleum isolate, strain CIP 103039, showed a typical synergy image between clavulanic acid and expanded-spectrum cephalosporins. Shotgun cloning gave a recombinant plasmid in Escherichia coli that produced a beta-lactamase, CGA-1, with a pI value of 8.9 that conferred resistance to most penicillins (except ureidopenicillins) and narrow-spectrum cephalosporins and an intermediate susceptibility to expanded-spectrum cephalosporins and aztreonam. The CGA-1 amino acid sequence shared only 60% amino acid identity with CME-1 and CME-2 from Chryseobacterium meningosepticum, the most closely related beta-lactamases. CGA-1 was very likely chromosome encoded. It is a novel member of the PER subgroup of Ambler class A beta-lactamases (Bush functional group 2be).

摘要

通过纸片扩散法对一株戈氏金黄杆菌(Chryseobacterium gleum)分离株(菌株CIP 103039)进行抗生素敏感性测试,结果显示克拉维酸与广谱头孢菌素之间呈现典型的协同作用图像。鸟枪法克隆在大肠杆菌中获得了一个重组质粒,该质粒产生一种β-内酰胺酶CGA-1,其pI值为8.9,对大多数青霉素(除脲基青霉素外)和窄谱头孢菌素具有抗性,对广谱头孢菌素和氨曲南具有中等敏感性。CGA-1的氨基酸序列与来自脑膜败血金黄杆菌(Chryseobacterium meningosepticum)的最密切相关的β-内酰胺酶CME-1和CME-2仅具有60%的氨基酸同一性。CGA-1很可能是染色体编码的。它是安布勒A类β-内酰胺酶PER亚组(布什功能组2be)的一个新成员。

相似文献

8
TLA-2, a novel Ambler class A expanded-spectrum beta-lactamase.TLA-2,一种新型的安布勒A类超广谱β-内酰胺酶。
Antimicrob Agents Chemother. 2005 Nov;49(11):4767-70. doi: 10.1128/AAC.49.11.4767-4770.2005.

引用本文的文献

5
bacteraemia: first reported cases from Qatar.菌血症:卡塔尔首次报告的病例
New Microbes New Infect. 2021 Mar 22;41:100869. doi: 10.1016/j.nmni.2021.100869. eCollection 2021 May.
10
Beta-lactamase nomenclature.β-内酰胺酶命名法。
Antimicrob Agents Chemother. 2006 Apr;50(4):1123-9. doi: 10.1128/AAC.50.4.1123-1129.2006.

本文引用的文献

6
The taxonomy, ecology and cultivation of bacterial genera belonging to the family Flavobacteriaceae.
Int J Food Microbiol. 1999 Dec 15;53(2-3):81-94. doi: 10.1016/s0168-1605(99)00162-2.

文献检索

告别复杂PubMed语法,用中文像聊天一样搜索,搜遍4000万医学文献。AI智能推荐,让科研检索更轻松。

立即免费搜索

文件翻译

保留排版,准确专业,支持PDF/Word/PPT等文件格式,支持 12+语言互译。

免费翻译文档

深度研究

AI帮你快速写综述,25分钟生成高质量综述,智能提取关键信息,辅助科研写作。

立即免费体验