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    Biochem Biophys Res Commun. 1987 Oct 29;148(2):546-52.

    Cloning and sequence of cDNA encoding a peptide C-terminal alpha-amidating enzyme from Xenopus laevis.

    Mizuno K, Ohsuye K, Wada Y, Fuchimura K, Tanaka S, Matsuo H.

    Department of Biochemistry, Miyazaki Medical College, Japan.

    The C-terminal alpha-amide formation of the peptides is one of the most important events of prohormone processing. We have recently isolated an alpha-amidating enzyme, AE-I, from Xenopus laevis skin, which is the only enzyme ever purified to homogeneity. In this study, we report cloning and sequence of cDNA encoding AE-I. Our results indicate that enzyme AE-I is initially synthesized as a precursor with 400 amino acid residues, which is further processed to the mature enzyme consisting of 344 residues. Preliminary expression in E. coli of the cDNA corresponding to AE-I was found to produce an enzyme with appreciable alpha-amidating activity.

    PMID: 3689360 [PubMed - indexed for MEDLINE]

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