text: There are five UCP homologs known in mammals. While each of these performs unique functions, certain functions are performed by several of the homologs. The homologs are as follows:
  *UCP1, also known as thermogenin or SLC25A7
  *UCP2, also known as SLC25A8
  *UCP3, also known as SLC25A9
  *UCP4, also known as SLC25A27
  *UCP5, also known as SLC25A14