Adaptive evolution of the uncoupling protein 1 gene contributed to the acquisition of novel nonshivering thermogenesis in ancestral eutherian mammals.

Abstract

Homeotherms possess various physiological mechanisms to maintain their body temperature, thus allowing them to adapt to various environments. Under cold conditions, most eutherian mammals upregulate heat production in brown adipose tissue (BAT), and uncoupling protein (UCP) 1 is an essential factor in BAT thermogenesis. The evolutionary origin of UCP1 was… (More)

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