Homeophasic adaptation

Homeophasic Adaptation The Dynamic Phase Behavior Model... 

The adaptations that thwart inappropriate phase changes have been presented as theories of homeophasic adaptation (McElhaney, 1984) and dynamic phase behavior (Hazel, 1995). In essence, both theories stress the same primary points the lipid composition of the bilayer must be modified in the face of temperature change to conserve the appropriate phase structure. The liquid-crystalline phase must be conserved at low temperatures. At higher temperatures the propensity to form the hexagonal II phase must not become too great. Thus, Tm and Th must be adjusted during adaptation. 

Homeophasic and Homeoviscous Adaptation Correlations with Biochemical, Physiological, and Behavioral Functions... 

Parenthetically, it should be noted that mitochondrial respiration rates normalized to mitochondrial protein content do not exhibit a significant degree of compensation to temperature (see Johnston et al., 1994). For mitochondria, then, changes in membrane physical state linked to homeophasic and homeoviscous adaptation do not appear linked to temperature-compensatory changes in specific activities of enzymes. 

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