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- Title
Influence of apoproteins for enediyne production.
- Authors
Hang, Vu; Kim, Tae; Oh, Tae-Jin; Sohng, Jae
- Abstract
Kedarcidin and neocarzinostatin belong to the chromoprotein family of endiyene antibiotics and have potent antitumor activity. Their structures consist of an apoprotein and a nonpeptide chromophore. Apoprotein has been known to be essential to stabilize and regulate the availability of a labile chromophore. Here, we have identified the complete kedarcidin apoprotein gene ( kedA) from Streptoalloteichus sp. ATCC 53650 ( Actinomycete L585-6). KedA was characterized by a comparative study with neocarzinostatin apoprotein (NcsA). Overexpression of kedA resulted in a ∼ 2-fold enhanced production of kedarcidin in Streptoalloteichus sp., whereas overexpression of ncsA resulted in a ∼ 1.6-fold enhanced production of neocarzinostatin in Streptomyces carzinostaticus ATCC 15944. Moreover, the apoprotein-overexpressed strain showed a high growth rate, which demonstrates that the apoprotein not only protects the labile chromophore, but also tolerates the toxicity of endiyene antibiotics in the host strain.
- Subjects
APOPROTEINS; ENEDIYNES; STREPTOMYCES; ANTIBIOTICS; ANTINEOPLASTIC agents
- Publication
Biotechnology & Bioprocess Engineering, 2011, Vol 16, Issue 3, p462
- ISSN
1226-8372
- Publication type
Article
- DOI
10.1007/s12257-010-0369-4