Calcitroic acid
Encyclopedia
Calcitroic acid is a metabolite
of 1α,25-dihydroxyvitamin D3
(calcitriol). Its formation is catalyzed by the enzyme
calcitriol 24-hydroxylase
. Calcitroic acid is soluble in water and excreted in urine
.
Metabolite
Metabolites are the intermediates and products of metabolism. The term metabolite is usually restricted to small molecules. A primary metabolite is directly involved in normal growth, development, and reproduction. Alcohol is an example of a primary metabolite produced in large-scale by industrial...
of 1α,25-dihydroxyvitamin D3
Calcitriol
Calcitriol , also called 1,25-dihydroxycholecalciferol or 1,25-dihydroxyvitamin D3, is the hormonally active form of vitamin D with three hydroxyl groups...
(calcitriol). Its formation is catalyzed by the enzyme
Enzyme
Enzymes are proteins that catalyze chemical reactions. In enzymatic reactions, the molecules at the beginning of the process, called substrates, are converted into different molecules, called products. Almost all chemical reactions in a biological cell need enzymes in order to occur at rates...
calcitriol 24-hydroxylase
CYP24A1
1,25-dihydroxyvitamin D3 24-hydroxylase, mitochondrial is an enzyme that in humans is encoded by the CYP24A1 gene.This gene encodes a member of the cytochrome P450 superfamily of enzymes...
. Calcitroic acid is soluble in water and excreted in urine
Urine
Urine is a typically sterile liquid by-product of the body that is secreted by the kidneys through a process called urination and excreted through the urethra. Cellular metabolism generates numerous by-products, many rich in nitrogen, that require elimination from the bloodstream...
.