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pubmed:abstractText |
In order to develop the use of carboxypeptidase Y (CPD-Y, EC 3.4.12.1) as a catalyst for radioactive hormonal synthesis, the stepwise synthesis of a pentapeptide, Leu-enkephalin, was studied on a microscale. Each peptide bond was formed by enzymatic catalysis, using microquantities of the precursors (amino acid or peptide esters as acyl-components and amino acid ester or amide as nucleophiles). The high condensation yields obtained suggests that CPD-Y can be a useful tool for preparation of radioactive hormonal peptides.
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pubmed:affiliation |
Centre d'Etudes Nucléaires de Saclay, Département de Biologie, Service de Biochimie, C.E.A., Gif-sur-Yvette, France.
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