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Overexpression and Purification of Recombinant Eel Calcitonin and Its Phylogenetic Analysis

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Calcitonin (CT), a peptide hormone that is widely used for the treatment of osteoporosis, Paget's disease, hypercalcemic shock and chronic pain in terminal cancer patients, is produced by the para-follicular cells of the thyroid gland in mammals and by the ultimobranchial gland of birds and fish. Fish calcitonin, like eel calcitonin (eCT), is more potent and longer lasting than human CT and is one of the many bioactive peptides that require C-terminal amidation for full biological activity. In this study we describe the over-expression and over-production of C-terminal amidated eCT in recombinant Streptomyces avermitilis. A phylogenetic analysis was performed with all the known CT amino acid sequences.

Keywords: amidating enzyme; pchic9; recombinant eel calcitonin (ect); therapeutic protein

Document Type: Review Article


Affiliations: Department of Biotechnology Glenmark Laboratories; C-33 Nizamuddin East, New Delhi-110013, India.

Publication date: April 1, 2005

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  • Protein & Peptide Letters publishes short papers in all important aspects of protein and peptide research, including structural studies, recombinant expression, function, synthesis, enzymology, immunology, molecular modeling, drug design etc. Manuscripts must have a significant element of novelty, timeliness and urgency that merit rapid publication. Reports of crystallisation, and preliminary structure determinations of biologically important proteins are acceptable. Purely theoretical papers are also acceptable provided they provide new insight into the principles of protein/peptide structure and function.

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