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  • C9658 - Carboxypeptidase G from Pseudomonas sp.

C9658 Sigma

Carboxypeptidase G from Pseudomonas sp.

lyophilized powder, ≥3 units/mg protein

Synonym: γ-Glutamyl hydrolase




20 units in glass bottle

5 units in poly bottle

Preparation Note

Chromatographically purified

Solutions should be prepared fresh prior to use.

Unit Definition

One unit will hydrolyze 1.0 μmole of L-glutamic acid from (+)amethopterin per min at pH 7.3 at 30 °C.

Physical form

Contains sodium acetate salt.


Carboxypeptidase G from Pseudomonas sp., or γ-Glutamyl hydrolase, has been used in a study to assess the role of the putidaredoxin COOH-terminus in P-450cam (cytochrome m) hydroxylations. Carboxypeptidase G from Pseudomonas sp. has also been used in a study to investigate the effects of nitric oxide on pemetrexed cytotoxicity via NO‑cGMP signaling in lung adenocarcinoma cells.

Biochem/physiol Actions

Carboxypeptidase G is a lysosomal, thiol-dependent protease, which progressively cleaves γ-glutamyl pteroyl poly-γ-glutamate yielding pteroyl-α-glutamate (folic acid) and free glutamate. It is considered highly specific for the γ-glutamyl bond, but not for the C-terminal amino acid of the leaving group. Molecular mass of this homodimer is approximately 90 kDa. The enzyme is activated by Zn2+ ions.

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Safety Information

NONH for all modes of transport
WGK Germany 
Protocols & Articles

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