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Sattahipmycin, a Hexacyclic Xanthone Produced by a Marine-Derived Streptomyces .

Kantinan LeetanasaksakulWilaiwan KoomsiriTakuya SugaHirotaka MatsuoRei HokariPakorn Wattana-AmornYo Ko TakahashiKazuro ShiomiTakuji NakashimaYuki InahashiArinthip Thamchaipenet
Published in: Journal of natural products (2022)
Sattahipmycin was isolated from the mycelium of marine-derived Streptomyces sp. GKU 257-1 by following the antibiofilm activity against E. coli NBRC 3972 throughout the purification steps. The structure of sattahipmycin was determined to be a new polycyclic xanthone related to xantholipin but lacking a dioxymethylene and a chlorinated carbon. This compound showed activity toward Gram-positive bacteria and Plasmodium falciparum , antibiofilm formation of Escherichia coli , and cytotoxicity to human cancer cell lines. Using genome sequence data, a biosynthetic pathway leading to sattahipmycin has been proposed involving an uncharacterized type II polyketide synthase biosynthetic gene cluster.
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