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Key Documents

C3888

Sigma-Aldrich

Carboxypeptidase Y from baker′s yeast (S. cerevisiae)

lyophilized powder, ≥50 units/mg protein

Synonym(s):

Peptidyl-L-amino acid Hydrolase, Serine Carboxypeptidase

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About This Item

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

grade

Proteomics Grade

form

lyophilized powder

specific activity

≥50 units/mg protein

mol wt

61 kDa

composition

Protein, ≥75% E1%/280

shipped in

wet ice

storage temp.

−20°C

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Application

Carboxypeptidase Y has a broad specificity and is stable in urea. Hence, this enzyme is not like other carboxypeptidases and can be used for sequence analysis. Due to its amidase action, this enzyme might be applied to the sequence analysis of peptides having amidated COOH-terminal groups such as oxytocin and vasopressin.

Biochem/physiol Actions

The glycoprotein has a molecular weight of about 61,000, has a nitrogen content of 12.74%. It is a single polypeptide chain of 442 residues with 16 residues of glucosamine in the carbohydrate moiety. Lysine is at the NH2 terminus and -Asp-Ser-Thr-Leu is the COOH-terminal sequence. The principal action of the enzyme is to remove COOH-terminal residues from polypeptide chains. It is used as a vacuolar marker enzyme for studies on protein transport and localization.

Packaging

Package size based on protein content

Unit Definition

One unit will hydrolyze 1.0 μmole of N-CBZ-Phe-Ala to N-CBZ-L-phenylalanine and L-alanine per min at pH 6.75 at 25°C, based on EM/230 = 191.5.

Physical form

Lyophilized powder containing citric acid.

Analysis Note

amidase and esterase activities may be present

Pictograms

Health hazardExclamation mark

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 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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Caroline A Magalhães et al.
Memorias do Instituto Oswaldo Cruz, 106(2), 146-152 (2011-05-04)
Typical and atypical enteropathogenic Escherichia coli (EPEC) are considered important bacterial causes of diarrhoea. Considering the repertoire of virulence genes, atypical EPEC (aEPEC) is a heterogeneous group, harbouring genes that are found in other diarrheagenic E. coli pathotypes, such as
E van Tuinen et al.
The journal of histochemistry and cytochemistry : official journal of the Histochemistry Society, 35(3), 327-333 (1987-03-01)
We have developed a simple and effective method to embed whole yeast cells in Lowicryl resins with excellent ultrastructural and antigenic preservation. Using affinity-purified antibodies eluted from electrophoretically separated proteins transferred to nitrocellulose, we have shown by immunoelectron microscopy that
H R Stennicke et al.
Biochemistry, 35(22), 7131-7141 (1996-06-04)
The activity of serine carboxypeptidases is dependent on a catalytic triad, an oxyanion hole, and a binding site equivalent to those found in the serine endopeptidases. The action of carboxypeptidase Y on substrates containing amino acids, alcohols, and amines as
Sam T Mugford et al.
Methods in enzymology, 516, 279-297 (2012-10-05)
Serine carboxypeptidase-like (SCPL) acyltransferases facilitate transacylation reactions using energy-rich 1-O-β-glucose esters in the synthesis of an array of bioactive compounds and are associated with the diversification of plant natural products. SCPL acyltransferases have evolved from a hydrolytic ancestor by adapting
Hiroto Morita et al.
Applied and environmental microbiology, 78(22), 8154-8157 (2012-09-11)
Aspergillus oryzae has an ortholog of Saccharomyces cerevisiae KEX1, termed kexA. A truncated form of KexA protein showed serine-type carboxypeptidase activity and somewhat broader substrate specificity than Kex1 protease. Furthermore, our results indicated that KexA is required for normal growth

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