C9658
Carboxypeptidase G from Pseudomonas sp.
lyophilized powder, ≥3 units/mg protein
Synonym(s):
γ-Glutamyl hydrolase
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About This Item
Recommended Products
form
lyophilized powder
Quality Level
specific activity
≥3 units/mg protein
mol wt
homodimer ~90 kDa
composition
Protein, ~70% biuret
solubility
H2O: soluble 0.5 mg/mL
storage temp.
−20°C
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Application
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.
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.
Preparation Note
Chromatographically purified
Solutions should be prepared fresh prior to use.
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3
Target Organs
Respiratory system
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
Certificates of Analysis (COA)
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The enzymatic hydrolysis of methotrexate and folic acid.
C C Levy et al.
The Journal of biological chemistry, 242(12), 2933-2938 (1967-06-25)
Edgar M Pera et al.
Gene expression patterns : GEP, 3(2), 147-152 (2003-04-25)
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S G Sligar et al.
Proceedings of the National Academy of Sciences of the United States of America, 71(10), 3906-3910 (1974-10-01)
Methylene hydroxylation by cytochrome P-450(cam) (cytochrome m) can be resolved into four distinct steps: substrate addition, m(o) --> m(os); reduction, m(os) --> m(rs); dioxygen addition, m(rs) --> m(O2) (rs); followed by a second putidaredoxin (Pseudomonas putida ferredoxin)-mediated reduction and product
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Chemotherapy is the most common method to treat cancer. The use of certain antineoplastic drugs, however, is associated with the development of peripheral neuropathy that can be dose-limiting. Excitotoxic glutamate release, leading to excessive glutamatergic neurotransmission and activation of N-methyl-D-aspartate
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