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  • 标题:Production of Angiotensin-Converting Enzyme Inhibitors from Baker's Yeast Glyceraldehyde-3-phosphate Dehydrogenase
  • 本地全文:下载
  • 作者:Yasuhiro KOHAMA ; Yasukazu NAGASE ; Hiroaki OKA
  • 期刊名称:Biological and Pharmaceutical Bulletin
  • 印刷版ISSN:0918-6158
  • 电子版ISSN:1347-5215
  • 出版年度:1990
  • 卷号:13
  • 期号:12
  • 页码:766-771
  • DOI:10.1248/bpb1978.13.766
  • 出版社:The Pharmaceutical Society of Japan
  • 摘要:Angiotensin-converting enzyme (ACE) inhibitors were excised from the molecule of glyceraldehyde-3-phosphate dehydrogenase (GAPDH) preparation of baker's yeast by heating at 120°C in 1 M AcOH-20 mM HCl. Three inhibitors were then purified by gel-permeation and reversephase chromatographies. One of the yeast ACE inhibitors, YG-3, was GAPDH peptide 79-89 (Pro-Ala-Asn-Leu-Pro-Trp-Gly-Ser-Ser-Asn-Val, IC50 : 18 μM), and contained the sequence homologous to vertebratc ACE inhibitors (GAPDH peptides 79-86 or 81-88). Other inhibitors, YG-1 (Gly-His-Lys-Ile-Ala-Thr-Phe-Gln-Glu-Arg, IC50 : 0.4 μM) and YG-2 (Gly-Lys-Lys-Ile-Ala-Thr-Tyr-Gln-Glu-Arg, IC50 : 2 μM), corresponded to amino acid residues 68-77 in two different forms of yeast GAPDH, respectively. Their sequences were quite different from those of the venom peptide family. YG-1 was the most potent ACE inhibitor among yeast and vertebrate GAPDH peptides excised by acid-limited proteolysis. Thus, yeast GAPDH seems to be an excellent source of naturally occurring ACE inhibitors.
  • 关键词:sequence
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