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The glucose transport system of the hyperthermophilic anaerobic bacterium Thermotoga neapolitana

Article Abstract:

In the presence of an external source of energy Thermotoga neapolitana accumulates the nonmetabolizable glucose analog, 2-deoxy-D-glucose against a concentration gradient. This indicates the presence of an active transport system for glucose in the hypertheromophilic anaerobic marine bacterium. 2-deoxy-D-glucose is accumulated in an intracellular free sugar pool that is exchangeable for extracellular D-glucose. The transport depends on the presence of Na+ ion and is inhibited by arsenate and gramicidin D. There is absence of any sugar phosphotransferase activity in T. neapolitana cells.

Author: Galperin, Michael Y., Noll, Kenneth M., Romano, Antonio H.
Publisher: American Society for Microbiology
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1996
Analysis, Biological transport, Active, Active biological transport, Anaerobic bacteria

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Improved methods for cultivation of the extremely thermophilic bacterium Thermotoga neapolitana

Article Abstract:

The suitability of Thermotoga neapolitana for basic molecular biological studies of extreme thermophiles is discussed. Its growth medium components and cultivation conditions were optimized by a formulated defined marine salts medium. Mean plating efficiencies were calculated under aerobic and anaerobic conditions. Its ability to grow on both solid and liquid media with minimal anoxic precautions and its variability despite being a strict anaerobe determined the importance of this evolutionary bacterium.

Author: Childers, Susan E., Vargas, Madeline, Noll, Kenneth M.
Publisher: American Society for Microbiology
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1992
Methods, Molecular biology

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Catabolite repression in the hyperthermophilic bacterium Thermotoga neapolitana is independent of cAMP

Article Abstract:

Catabolite repression in the hyperthermophilic bacterium Thermotoga neapolitana is investigated. Results indicate that the bacterium can regulate beta-galactosidase synthesis and exhibit diauxic growth in media containing glucose and lactose. Moreover, it was shown that different sugars affect beta-galactosidase expression in different ways and that cAMP does not play a role in beta-galactosidase regulation.

Author: Vargas, Madeline, Noll, Kenneth M.
Publisher: Society for General Microbiology
Publication Name: Microbiology
Subject: Biological sciences
ISSN: 1350-0872
Year: 1996
Gram-negative bacteria, Metabolic regulation, Cyclic adenylic acid, Cyclic adenosine monophosphate

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Subjects list: Research, Bacteria, Thermophilic, Thermophiles
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