ea0002sp5 | (1) | SFE2001
Bland R
The active form of vitamin D, 1,25-dihydroxyvitamin D3 (1,25D3), is vital for calcium/phosphate homeostasis, bone cell differentiation and modification of immune responses. Synthesis of 1,25D3 is catalysed by the mitochondrial cytochrome P450 enzyme 25-hydroxyvitamin D3-1α-hydroxylase (1α-OHase; CYP27B1). Although 1α-OHase has been detected at several extra-renal sites, circulating levels of 1,25D3 appear...