catalytic activity:Stearoyl-CoA + 2 ferrocytochrome b5 + O(2) + 2 H(+) = oleoyl-CoA + 2 ferricytochrome b5 + 2 H(2)O.,cofactor:Iron.,domain:The histidine box domains may contain the active site and/or be involved in metal ion binding.,function:Terminal component of the liver microsomal stearyl-CoA desaturase system, that utilizes O(2) and electrons from reduced cytochrome b5 to catalyze the insertion of a double bond into a spectrum of fatty acyl-CoA substrates including palmitoyl-CoA and stearoyl-CoA.,similarity:Belongs to the fatty acid desaturase family.,
Endoplasmic reticulum membrane ; Multi-pass membrane protein .
Detected in fetal liver, lung and brain. Highly expressed in adult adipose tissue, and at lower levels in adult brain and lung.
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