Specificity of the acid protease from Monascus kaoliang towards the B-chain of oxidized insulin.
Biochim Biophys Acta
; 614(2): 607-12, 1980 Aug 07.
Article
em En
| MEDLINE
| ID: mdl-6996736
ABSTRACT
The proteolytic specificity of the acid protease from Monascus kaoliang has been investigated using the B-chain of performic acid-oxidized insulin as peptide substrate. Six splittings were detected after 1 h digestion and 12 splittings were found after 12 h incubation at 37 degrees C, pH 4.8. The bonds most susceptible to the acton of M. kaoliang acid protease were Phe(24)-Phe(25), Leu(15)-Tyr(16) and Tyr(16)-Leu(17). Among the acid proteases compared, the specificity of M. kaoliang acid protease on the B-chain of oxidized insulin is more closely related to that of penicillopepsin with which it has ten cleavage sites in common. N-Acetyl-L-phenylalanyl-L-3,5-diiodotyrosine, a synthetic substrate for pepsin, was resistant to the hydrolysis of M. kaoliang acid protease.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Endopeptidases
/
Ascomicetos
/
Insulina
Idioma:
En
Revista:
Biochim Biophys Acta
Ano de publicação:
1980
Tipo de documento:
Article