Abstract
Cells of the extremely thermophilic, strictly anaerobic Thermotoga maritima strain MSB8 (DSM 3109) and of the newly isolated Thermotoga spec. strain ZB (DSM 4138) grown on glucose at 78°C contained the long-chain polyamines caldopentamine and caldohexamine. Additional unidentified long-chain polyamines were present in small amounts. After increasing the growth temperature from the lower to the upper limit (50–85°C), the proportions of long-chain polyamines present in cells of Thermotoga spec. strain ZB increased both in total amounts, as well as in increasing chain-length, suggesting a significant role in adaptation to thermophilic growth.
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