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Penicillinase from Bacillus cereus

Type II, lyophilized powder

Penicillin amido-β-lactam hydrolase, β-Lactamase II, Cephalosporinase, β-Lactamase I from Bacillus cereus
CAS Number:
Enzyme Commission number:
MDL number:


Type II


lyophilized powder


vial of ≥2.5 units (using cephaloridine)
vial of ≥300 units (using benzylpenicillin)

storage temp.


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Used in the production of penicillin.

Biochem/physiol Actions

Penicillinase specifically catalyzes the hydrolysis of β-lactam ring of penicillin.

Unit Definition

One unit will hydrolyze 1.0 μmole of indicated substrate per min at pH 7.0 at 25 °C. Sold as benzylpenicillin units. This International Unit (using benzylpenicillin as substrate) is approximately equal to 600 Levy or 75 Pollock units.

Physical form

Crude, lyophilized powder containing buffer and zinc salts, and stabilized with bovine serum albumin

Analysis Note

Typical vial content: approx. 10 mg total protein (biuret)

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

More Documents

Quotes and Ordering

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
Joseph E Rubin et al.
Veterinary microbiology, 170(1-2), 10-18 (2014-03-01)
Organisms in the family Enterobactericeae including, Escherichia coli, commonly cause community and hospital-associated infections in both humans and companion animals. The increasing prevalence of infections with organisms producing broad spectrum β-lactamses such as the ESBLs (particularly the CTX-M type), AmpC
Mahboube Bagheri et al.
International journal of food microbiology, 177, 16-20 (2014-03-05)
Two hundred and four Escherichia coli strains were isolated from external and visceral cavity surfaces of 102 slaughtered broiler carcasses. The isolates were screened to determine the phylogenetic background and presence of Shiga toxins (stx1, stx2), intimin (eae) and beta-lactamase
Ulrike Gabriella Wagner et al.
FEBS letters, 588(7), 1154-1160 (2014-03-13)
In this article we analyze the reasons for catalytic promiscuity of a type VIII esterase with β-lactamase fold and the ability to cleave β-lactams. We compared the structure of this enzyme to those of an esterase of the same type

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