There is a positive correlation between the growth temperature and the degree of fatty-acid unsaturation of the cell lipids of Mrakia frigida.

[5] The variation in the degree of fatty acid unsaturation of the yeast indicates its ability to alter the cellular component is fundamental to adaptation to environmental changes.

This phenomenon may be an attempt by the cells to compensate for the decrease in cytochrome a+a3 by involving alternative pathways of electron transport.

The positive correlation relationship between the growth temperature of Mrakia frigida and the membrane-lipid unsaturation rate, and the negative relationship between the membrane-lipid unsaturation rate and cytochrome concentration in cells indicate the membrane structure and composition are significant to temperature adaptation in Mrakia frigida.

Manipulation of the fatty-acid unsaturation index allows Mrakia frigida to alter its membrane fluidity, and function with changing temperatures.