Cytochrome P450 27b1 (CYP27B1) Antibody – Rabbit Polyclonal

This gene encodes a member of the cytochrome P450 superfamily of enzymes. The cytochrome P450 proteins are monooxygenases which catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids and other lipids. The protein encoded by this gene localizes to the inner mitochondrial membrane where it hydroxylates 25-hydroxyvitamin D3 at the 1alpha position. This reaction synthesizes 1alpha,25-dihydroxyvitamin D3, the active form of vitamin D3, which binds to the vitamin D receptor and regulates calcium metabolism. Thus this enzyme regulates the level of biologically active vitamin D and plays an important role in calcium homeostasis. Mutations in this gene can result in vitamin D-dependent rickets type I. [provided by RefSeq, Jul 2008]

CYP27B1: Catalyzes the conversion of 25-hydroxyvitamin D3 (25(OH)D) to 1-alpha,25-dihydroxyvitamin D3 (1,25(OH)2D) plays an important role in normal bone growth, calcium metabolism, and tissue differentiation. Defects in CYP27B1 are the cause of rickets vitamin D- dependent type 1A (VDDR1A); also known as pseudovitamin D deficiency rickets (PDDR). A disorder caused by a selective deficiency of the active form of vitamin D (1,25- dihydroxyvitamin D3) and resulting in defective bone mineralization and clinical features of rickets. Belongs to the cytochrome P450 family.

Protein type: Cell cycle regulation; EC 1.14.13.13; Lipid Metabolism - steroid biosynthesis; Mitochondrial; Oxidoreductase

Chromosomal Location of Human Ortholog: 12q14.1

Cellular Component: cytoplasm; mitochondrial outer membrane; mitochondrion

Molecular Function: calcidiol 1-monooxygenase activity; heme binding; iron ion binding

Biological Process: bone mineralization; calcium ion homeostasis; calcium ion transport; decidualization; negative regulation of cell growth; negative regulation of cell proliferation; positive regulation of keratinocyte differentiation; regulation of bone mineralization; response to estrogen; response to lipopolysaccharide; response to vitamin D; vitamin D catabolic process; vitamin D metabolic process; vitamin metabolic process

Disease: Vitamin D Hydroxylation-deficient Rickets, Type 1a