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类型
Type III
表单
lyophilized powder
比活
6-18 units/mg protein (using benzylpenicillin)
组成
Protein, ~10%
储存温度
2-8°C
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应用
β--lactamase is used to inactivate β-lactam antibiotics by breaking open the β-lactam ring. β--lactamase is used to study antibiotic resistance and resistance suppression. Product P4399 is produced from Enterobacter cloacae.
生化/生理作用
β--lactamase inactivates β-lactam antibiotics by breaking open the β-lactam ring.
单位定义
One unit will hydrolyze 1.0 μmole of benzylpenicillin per min at pH 7.0 at 25 °C. This International Unit (using benzylpenicillin as substrate) is approximately equal to 600 Levy or 75 Pollock units.
外形
Lyophilized powder containing sodium phosphate and sodium citrate buffer salts
制备说明
色谱纯化产品
分析说明
Protein determined by biuret
抑制剂
警示用语：
Danger
危险声明
危险分类
Resp. Sens. 1 - Skin Sens. 1
储存分类代码
11 - Combustible Solids
WGK
WGK 3
闪点(°F)
Not applicable
闪点(°C)
Not applicable
个人防护装备
dust mask type N95 (US), Eyeshields, Faceshields, Gloves
法规信息
新产品
P J Johnsen et al.
Genetics, 181(4), 1521-1533 (2009-02-05)
We present a new hypothesis for the selective pressures responsible for maintaining natural competence and transformation. Our hypothesis is based in part on the observation that in Bacillus subtilis, where transformation is widespread, competence is associated with periods of nongrowth
Arnold Louie et al.
Antimicrobial agents and chemotherapy, 56(1), 258-270 (2011-10-26)
New broad-spectrum β-lactamases such as KPC enzymes and CTX-M-15 enzymes threaten to markedly reduce the utility of our armamentarium of β-lactam agents, even our most potent drugs, such as carbapenems. NXL104 is a broad-spectrum non-β-lactam β-lactamase inhibitor. In this evaluation
Ryan M Phelan et al.
Bioorganic & medicinal chemistry letters, 19(4), 1261-1263 (2009-01-27)
An efficient synthesis of a 5-fluorouracil-cephalosporin prodrug is described for use against colorectal and other cancers in antibody and gene-directed therapies. The compound shows stability in aqueous media until specifically activated by beta-lactamase (betaL). The kinetic parameters of the 5-fluorouracil-cephalosporin
A A Alsultan et al.
Journal of medical microbiology, 62(Pt 6), 885-888 (2013-03-23)
Carbapenem-resistant Acinetobacter baumannii is becoming increasingly prevalent in patients with diabetes mellitus in the Middle East. We examined the relationship of these bacteria and their resistance mechanisms to the diabetic disease status of patients in Saudi Arabia. Susceptibilities of 271
Elena De Vecchi et al.
Journal of medical microbiology, 62(Pt 6), 859-863 (2013-03-12)
Urinary tract infections (UTIs) are a common cause of bacteraemia in the elderly and are associated with a high probability of hospitalization. Despite the impact of UTIs on health status and quality of life, a limited number of studies have
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