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P4399

Sigma-Aldrich

β-内酰胺酶 来源于阴沟肠杆菌

Type III, lyophilized powder, 6-18 units/mg protein (using benzylpenicillin)

同義詞:

β-内酰胺酶 I, β-内酰胺酶 II, 头孢菌素, 青霉素 来源于阴沟肠杆菌, 青霉素酰氨基-β-内酰胺水解酶

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About This Item

CAS號碼:
酶委員會編號:
MDL號碼:
分類程式碼代碼:
12352204
NACRES:
NA.54

種類

Type III

形狀

lyophilized powder

比活性

6-18 units/mg protein (using benzylpenicillin)

成份

Protein, ~10%

儲存溫度

2-8°C

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應用

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.

單位定義

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.

外觀

Lyophilized powder containing sodium phosphate and sodium citrate buffer salts

準備報告

色谱纯化产品

分析報告

Protein determined by biuret

抑制劑

產品號碼
描述
訂價

象形圖

Health hazard

訊號詞

Danger

危險聲明

危險分類

Resp. Sens. 1 - Skin Sens. 1

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 3

閃點(°F)

Not applicable

閃點(°C)

Not applicable

個人防護裝備

dust mask type N95 (US), Eyeshields, Faceshields, Gloves


分析證明 (COA)

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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
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
Grace Yim et al.
Canadian journal of microbiology, 59(2), 110-116 (2013-03-07)
Microbial populations in wastewater treatment plants (WWTPs) are increasingly being recognized as environmental reservoirs of antibiotic resistance genes. PCR amplicons for plasmid-mediated quinolone resistance determinants qnrA, qnrB, and qnrS were recorded in samples from a WWTP in Vancouver, British Columbia.
Hasan Nazik et al.
The Southeast Asian journal of tropical medicine and public health, 43(5), 1178-1185 (2013-02-26)
Bacterial isolates producing Class D OXA-48 carbapenemase may be missed in routine laboratory testing, allowing them to spread undetected. The purpose of the present study was to detect bla(OXA-48) among ESBL-producing Klebsiella pneumoniae and Escherichia coli isolates collected from a

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