Pyrostatins A and B, new inhibitors of N-acetyl-beta-D-glucosaminidase, produced by Streptomyces sp. SA-3501.
J Enzyme Inhib
; 8(4): 223-32, 1995.
Article
en En
| MEDLINE
| ID: mdl-7542319
Pyrostatins A and B, new inhibitors of N-acetyl-beta-D-glucosaminidase (GlcNAc-ase), have been purified from the culture broth of Streptomyces sp. SA-3501 isolated from a marine environment. They were purified by chromatography on Dowex 50W, silica gel and Capcell Pak C18 (HPLC) followed treatment with active carbon and then isolated as white powders. The structures of pyrostatins A and B were determined by NMR studies to be 4-hydroxy-2-imino-1-methylpyrrolidine-5-carboxylic acid and 2-imino-1-methylpyrrolidine-5-carboxylic acid, respectively. They were competitive with the substrate, and the inhibition constants (Ki) of pyrostatins A and B were 1.7 x 10(-6) M and 2.0 x 10(-6) M respectively.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Pirrolidinas
/
Acetilglucosaminidasa
/
Streptomyces
/
Iminas
Idioma:
En
Revista:
J Enzyme Inhib
Asunto de la revista:
BIOQUIMICA
Año:
1995
Tipo del documento:
Article
País de afiliación:
Japón
Pais de publicación:
Suiza