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426205

β-Lactamase, Bacillus cereus 569/H9

Synonym(s):

β-Lactamase, Bacillus cereus 569/H9, Penicillinase

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About This Item

CAS Number:
EC Number:
UNSPSC Code:
12352202
NACRES:
NA.54
MDL number:
Biological source:
Bacillus sp. (Bacillus cereus)
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biological source

Bacillus sp. (Bacillus cereus)

Quality Segment

description

Merck USA index - 14, 7093

form

lyophilized

packaging

vial of ≥50 units β-lactamase II, vial of ≥500 units β-lactamase I

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze

solubility

sterile distilled water: soluble

shipped in

ambient

storage temp.

−20°C

General description

β-Lactamase produced by bacteria shares sequence homology to penicillin-binding proteins. This enzyme is found in Gram-negative bacteria. β-Lactamases have four molecular classes, named A, B, C, and D. A, C, and D form an acyl-enzyme via active site serine residue. Class B β-lactamases are metalloenzymes, which have a zinc ion at their active site for β-lactam hydrolysis.

Biochem/physiol Actions

β-Lactamase hydrolyzes β-lactum antibiotics and is the chief cause of resistance to β-lactam antibiotics development by bacteria. Mutations in the β-lactamases are associated with extended-spectrum β-lactamases (ESBLs).

Preparation Note

Following reconstitution, store in the refrigerator (4°C). Stock solutions are stable for up to 1 month at 4°C.

Other Notes

One unit is defined as the amount of enzyme that will hydrolyze 1.0 µmol benzyl penicillin and 1.0 µmol of cephalosporin C, respectively, per min at 25°C.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Disclaimer

Toxicity: Harmful (C)

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This Item
P452461305P0389
description

-

description

Type IV, lyophilized powder, 0.2-0.6 units/mg protein (using benzylpenicillin)

description

lyophilized, powder, white, ~13 U/mg

description

lyophilized powder, ≥1500.00 units/mg protein (using benzylpenicillin)

biological source

Bacillus sp. (Bacillus cereus)

biological source

bacterial (Enterobacter cloacae)

biological source

Bacillus sp. (Bacillus cereus)

biological source

Bacillus sp. (Bacillus cereus)

form

lyophilized

form

lyophilized powder

form

powder

form

lyophilized powder

shipped in

ambient

shipped in

-

shipped in

-

shipped in

wet ice

solubility

sterile distilled water: soluble

solubility

-

solubility

-

solubility

-

storage temp.

−20°C

storage temp.

2-8°C

storage temp.

−20°C

storage temp.

2-8°C

storage condition

OK to freeze

storage condition

-

storage condition

-

storage condition

-


pictograms

Health hazard

signalword

Danger

hcodes

Hazard Classifications

Resp. Sens. 1 - Skin Sens. 1

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable



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