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C9268

Sigma-Aldrich

Carboxypeptidase A from bovine pancreas

(Type II-PMSF treated), ≥50 units/mg protein, ready-to-use solution

Synonym(s):

Carboxypolypeptidase, Peptidyl-L-amino-acid hydrolase

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About This Item

CAS Number:
11075-17-5
Enzyme Commission number:
3.4.17.1 (BRENDA, IUBMB)
MDL number:
MFCD00130718
UNSPSC Code:
12352204
NACRES:
NA.54

grade

Proteomics Grade

form

ready-to-use solution

quality

(Type II-PMSF treated)

specific activity

≥50 units/mg protein

mol wt

~35 kDa

purified by

2× crystallization

impurities

≤0.05 BTEE units/mg protein chymotrypsin
≤10 BAEE units/mg protein trypsin

storage temp.

2-8°C

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Application

Carboxypeptidase A from bovine pancreas has been used in a study to investigate the expression of a soluble and activatable form of bovine procarboxypeptidase A in Escherichia coli. Carboxypeptidase A from bovine pancreas has also been used in a study to investigate the isolation and partial characterization of precursor forms of ostrich carboxypeptidase.
The enzyme from Sigma has been used as a comparison to study the specificity of Metarhizium anisopliae carboxypeptidase A (MeCPA). MeCPA had been genetically engineered to facilitate the removal of polyhistidine tags from the C-termini of recombinant proteins. It has also been used to de-tyrosinate α-tubulin, in vitro, in order to induce high affinity to ethyl-N-phenylcarbamate (EPC) sepharose.

Biochem/physiol Actions

Carboxypeptidase as isolated from bovine pancreas glands is a metalloenzyme that contains 1 g atom of zinc per mole of protein. It catalyzes the hydrolysis of the carboxyl-terminal peptide bond in peptides and proteins. It is primarily specific to aromatic and hydrophobic side chains such as phenylalanine, tryptophan or leucine. The enzyme also exhibits esterase activity. It is inhibited by beta-phenylpropionate and indole acetate.

Unit Definition

One unit will hydrolyze 1.0 μmole of hippuryl-L-phenylalanine per min at pH 7.5 at 25 °C.

Preparation Note

Treated with phenylmethylsulfonyl fluoride to eliminate trypsin and chymotrypsin activity. Dialyzed and recrystallized: aqueous suspension with toluene added.

Analysis Note

Protein determined by E1%/278

Pictograms

Health hazard
GHS08

Signal Word

Danger

Hazard Statements

H334

Hazard Classifications

Resp. Sens. 1

Storage Class Code

10 - Combustible liquids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Bodo Wiesler et al.
The Plant journal : for cell and molecular biology, 32(6), 1023-1032 (2002-12-21)
Auxin controls the orientation of cortical microtubules in maize coleoptile segments. We used tyrosinylated alpha-tubulin as a marker to assess auxin-dependent changes in microtubule turnover. Auxin-induced tyrosinylated alpha-tubulin, correlated with an elevated sensitivity of growth to antimicrotubular compounds such as
Facile discovery of surrogate cytokine agonists.
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Excessive replication of Saccharomyces cerevisiae Ty1 retrotransposons is regulated by Copy Number Control, a process requiring the p22/p18 protein produced from a sub-genomic transcript initiated within Ty1 GAG. In retrotransposition, Gag performs the capsid functions required for replication and re-integration.
Kaia Kukk et al.
Journal of biotechnology, 231, 224-231 (2016-06-19)
Vertebrate prostaglandin H synthases (PGHSs) are membrane-bound disulphide-containing hemoglycoproteins. Therefore, eukaryotic expression systems are required for the production of recombinant PGHSs. Recently we announced the expression of human PGHS-2 (hPGHS-2) in the yeast Pichia pastoris. Here we report improved production
Zhenhua Li et al.
BMC bioinformatics, 13, 51-51 (2012-03-29)
Water is an integral part of protein complexes. It shapes protein binding sites by filling cavities and it bridges local contacts by hydrogen bonds. However, water molecules are usually not included in protein interface models in the past, and few
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Protocols

Enzymatic Assay: Carboxypeptidase

Carboxypeptidase A activity measured via continuous spectrophotometric rate determination assay with hippuryl-L-phenylalanine substrate.

Enzymatic Assay: Carboxypeptidase

Carboxypeptidase A activity measured via continuous spectrophotometric rate determination assay with hippuryl-L-phenylalanine substrate.

Enzymatic Assay: Carboxypeptidase

Carboxypeptidase A activity measured via continuous spectrophotometric rate determination assay with hippuryl-L-phenylalanine substrate.

Enzymatic Assay: Carboxypeptidase

Carboxypeptidase A activity measured via continuous spectrophotometric rate determination assay with hippuryl-L-phenylalanine substrate.

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