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Water-hydrophobic compound interactions with the microbial cell

McCammick, EM and Gomase, VS and McGenity, TJ and Timson, DJ and Hallsworth, JE (2010) 'Water-hydrophobic compound interactions with the microbial cell.' In: Timmis, KN and McGenity, TJ and van der Meer, JR and de Lorenzo, V, (eds.) Handbook of Hydrocarbon and Lipid Microbiology. Springer, 1451 - 1466. ISBN 9783540775843

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The structural interactions of biological macromolecules, their biochemical activities and, ultimately, the metabolic function of cellular systems are dependent upon weak inter- and intra-molecular forces such as hydrogen bonds, Van der Waals forces, and the hydrophobic effect. Water molecules, and those of hydrophobic substances such as hydrocarbons, can take part in and/or modify these interactions and thereby determine the operational and structural stability of the microbial cell and its macromolecular systems. We explain how the cytosol, plasma membrane and the extracellular solution form a material and energetic continuum; and discuss the behavior of hydrophobic substances of extracellular origin as they migrate into the plasma membrane and into the cell's interior. The adverse effects of substances with a log P octanol-water ?2, that partition into the hydrophobic domains of biological macromolecules, are discussed in relation to microbial cell function; and we speculate whether the cellular stress that they induce is symmetrical or asymmetrical in nature. In the context of the microbial environment, we take a situational-functional approach to consider how hydrophobic stressors interact with the microbial cell, and what types of evasion tactics microbes can employ to minimize their inhibitory activities. Finally, we discuss the ecological implications of hydrocarbon-induced cellular stress for microbial systems.

Item Type: Book Section
Subjects: Q Science > QR Microbiology
Divisions: Faculty of Science and Health > Life Sciences, School of
Depositing User: Terence McGenity
Date Deposited: 24 Apr 2013 09:38
Last Modified: 25 Sep 2019 11:15

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