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| Content Provider | PubMed Central |
|---|---|
| Author | Hiramatsu, R. Horinouchi, S. Uchida, E. Hayakawa, T. Beppu, T. |
| Abstract | The prepro-peptide of fungal aspartic proteinase, Mucor pusillus rennin, is useful as a secretion leader for efficient secretion of human growth hormone (HGH) from Saccharomyces cerevisiae. For secretion by yeast cells of HGH with the same NH2 terminus as native HGH, an artificial Lys-Arg linker, which is one of the potential KEX2 recognition sequences, was introduced at the junction between the M. pusillus rennin secretion leader and mature HGH. The HGH directed by this construction was the same size as native HGH, as determined by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, and amino acid sequencing of its NH2 terminus revealed that the secretion leader peptide was removed correctly at the COOH-terminal side of the Lys-Arg linker. On the other hand, when the same plasmid was expressed in a kex2 mutant strain, unprocessed HGH of a higher molecular weight was secreted, indicating that no proteolytic cleavage at the Lys-Arg site occurred. These results clearly showed that the leader peptide with the Lys-Arg linker was recognized and specifically cleaved by the yeast KEX2 protease. The mature HGH purified from yeast culture medium was indistinguishable from native HGH in biological activity, determined by the adipocyte conversion assay, and in secondary structure, determined by circular dichroism spectroscopy. |
| Starting Page | 2052 |
| File Format | |
| ISSN | 10985336 |
| e-ISSN | 10985336 |
| Journal | Applied and Environmental Microbiology |
| Issue Number | 7 |
| Volume Number | 57 |
| Language | English |
| Publisher Date | 1991-07-01 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ecology Food Science Applied Microbiology and Biotechnology Biotechnology |
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