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Key Documents

C2900

Sigma-Aldrich

Chloramphenicol Acetyltransferase from Escherichia coli

lyophilized powder, 50,000-150,000 units/mg protein (Lowry)

Synonym(s):

Acetyl-CoA: chloramphenicol 3-O-acetyltransferase, CAT

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About This Item

CAS Number:
EC Number:
MDL number:
UNSPSC Code:
12352204
NACRES:
NA.54

form

lyophilized powder

Quality Level

specific activity

50,000-150,000 units/mg protein (Lowry)

mol wt

75 kDa (three identical subunits)

shipped in

dry ice

storage temp.

−20°C

Gene Information

Escherichia coli ... cat(2847485)

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General description

The enzyme has a molecular weight of approximately 78,000 Da and pH optimum of 7.8.

Biochem/physiol Actions

The enzyme responsible for chloramphenicol resistance in bacteria. Catalyzes the conversion of acetyl-CoA + chloramphenicol to CoA + chloramphenicol 3-acetate.

Unit Definition

One unit will convert 1.0 nanomole of chloramphenicol and acetyl-CoA to chloramphenicol 3-acetate and CoA per min at pH 7.8 at 25 °C.

Physical form

Partially purified; contains Tris buffer salts.

Pictograms

Health hazard

Signal Word

Danger

Hazard Statements

Precautionary Statements

Hazard Classifications

Resp. Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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