• Home
  • Search Results
  • Purification and characterization of L-phenylalanine aminopeptidase from chick-pea cotyledons (Cicer arietinum L.).

Purification and characterization of L-phenylalanine aminopeptidase from chick-pea cotyledons (Cicer arietinum L.).

Protein and peptide letters (2009-02-10)
Margarita Marinova, Alexander Dolashki, Florian Altenberend, Stefan Stevanovic, Wolfgang Voelter, Bozhidar Tchorbanov
ABSTRACT

Chick-pea (Cicer arietinum L.) cotyledons are unique source of aminopeptidase - 8-9 U/g cotyledons was observed using L-leucine-p-nitroanilide as substrate. The aminopeptidase was purified (65 kDa, pI 4.8 ) reaching a specific activity of 220 U/mg at pH 7.0-7.2 and 35-40 degrees C. The determined constant of specificity k(cat)/K(m) during hydrolysis of N-unsubstituted amino acid-p-nitroanilides showed a decrease order: Phe>Leu>Pro>Ile>Val>Ala. The enzyme was strongly inhibited by p-chloromercuribenzoic acid as well as in a competitive rate by the antihypertensive peptides Ile-Pro-Pro and Val-Pro-Pro.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
L-Proline p-nitroanilide trifluoroacetate salt, prolyl aminopeptidase substrate

Social Media

LinkedIn icon
Twitter icon
Facebook Icon
Instagram Icon

Merck

Research. Development. Production.

We are a leading supplier to the global Life Science industry with solutions and services for research, biotechnology development and production, and pharmaceutical drug therapy development and production.

© 2021 Merck KGaA, Darmstadt, Germany and/or its affiliates. All Rights Reserved.

Reproduction of any materials from the site is strictly forbidden without permission.