Biochemical properties of carboxypeptidase fromAloe arborescens Miller var.natalensis Berger

Autor: Hidehiko Beppu, Masafumi Obata, Shosuke Ito, Ryo Teradaira, Keisuke Fujita, Toshiharu Nagatsu
Rok vydání: 1993
Předmět:
Zdroj: Phytotherapy Research. 7:S26-S29
ISSN: 1099-1573
0951-418X
DOI: 10.1002/ptr.2650070710
Popis: A carboxypeptidase was partially purified from Aloe arborescens Miller var. natalensis Berger on a scale suitable for pharmacological studies. The enzyme was most active and stable at pH 5.0. The enzyme had a broad specificity against various synthetic peptides, being capable of splitting C-terminal proline. Its activity was inhibited almost completely by diisopropylfluorophosphate, strongly by transition metals, such as Fe 3+ , Hg 2+ and Cu 2+ , and moderately by sulphydryl reagents. These results indicate that Aloe enzyme is a serine carboxypeptidase and appears to contain a sulphydryl group that may be involved in its inactivation
Databáze: OpenAIRE