Abstract:
PURPOSE: Provided are a novel bioactive peptide containing inhibiting activity of angiotensin-I-converting enzyme(ACE) and its usage for curing hypertension. Particularly, the bioactive peptide is manufactured by separating an alpha s1 casein from cDNA library of human mammary gland and expressing it in E.coli, wherein 6 of histidines are added to C terminal in order to easily purify alpha s1 casein. CONSTITUTION: A human alpha s1 casein is expressed in E.coli and purified. And then, recombinant human alpha s1 casein is decomposed into trypsin. Thereafter, ACE inhibitory peptide is separated by using high performance liquid chromatography(HPLC). Next, an amino acid sequence of the selected peptide is analysed and a molecular weight thereof is measured. Finally, an ACE inhibiting activation of peptide is analyzed quantitatively.
Abstract:
본 발명은 대장균에서 발현한 재조합 인체 알파s1 카제인을 트립신으로 처리하여 분리한 안지오텐신-I-전환효소(ACE) 억제 활성을 갖는 인간 알파s1 카제인 유래의 신규한 생리활성 펩티드에 관한 것이다. 본 발명의 인체 알파 s1 카제인 유래의 생리활성 펩티드는 8~11번의 펩티드 Tyr-Pro-Glu-Arg, 136~143번의 펩티드 Tyr-Tyr-Pro-Gln-Ile-Met-Gln-Tyr과 164~170번의 펩티드 Asn-Asn-Val-Met-Leu-Gln-Trp로서 ACE에 대하여 각각 억제활성이 있는 뛰어난 효과가 있다.