Biochemical properties of carboxypeptidase fromAloe arborescens Miller var.natalensis Berger
Autor: | Hidehiko Beppu, Masafumi Obata, Shosuke Ito, Ryo Teradaira, Keisuke Fujita, Toshiharu Nagatsu |
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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 |
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