Adaptation of testicular follicle-stimulating hormone receptors to ambient temperatures in vertebrates: equilibrium analysis.
Gonadotrophin receptors of the rat, turtle, and newt testes had different optimal temperatures of affinity for rat FSH. The optimal temperature in the rat was around 37 degrees and that in the newt was between 15 and 20 degrees. The binding affinity in the turtle did not differ significantly at temperatures ranging between 0- and 40 degrees. These optimal temperatures coincided well with the temperatures at which gonadotrophin acts in each species under natural conditions.
D000818:Animals; D005640:Follicle Stimulating Hormone / Q000378:metabolism; D007700:Kinetics; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains; D011956:Receptors, Cell Surface / Q000378:metabolism*; D011962:Receptors, FSH; D012455:Salamandridae; D013045:Species Specificity; D013696:Temperature; D013737:Testis / Q000378:metabolism*; D014426:Turtles
D011956:Receptors, Cell Surface; D011962:Receptors, FSH; D005640:Follicle Stimulating Hormone