Journal
ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY
Volume 87, Issue 1, Pages 59-63Publisher
SPRINGER
DOI: 10.1007/s10482-004-6544-x
Keywords
actinomycete; enzyme inhibitor; marine
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Several enzyme-inhibitor-producing actinomycetes were isolated from various samples collected from the marine environment and characterized. Most of them produced novel compounds that are useful in medicine and agriculture. Actinomycete strain no. 18, which produces antibiotics against Gram-positive bacteria only in the presence of seawater, was isolated from sediment sampled from neritic sea water and characterized. The production of antibiotics was observed at seawater concentrations ranging from 60 to 110% (v/v). Thus, the production was seawater-dependent. The production of tetrodotoxin (TTX), known otherwise as puffer fish toxin, was investigated in various actinomycetes collected from the marine environment. Of 10 isolates from various sea areas, 9 produced TTX as judged by their retention times on high-performance liquid chromatography (HPLC). To our knowledge, this is the first report of actinomycetes from the marine environment that produce TTX.
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