CYP4A11

Ideogram human chromosome 1

CYP4A11 is a member of the cytochrome P450 superfamily of enzymes. These enzymes are monooxygenases which catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids, and other lipids. The CYP4A11 gene is located on chromosome 1 in humans.

Function

CYP4A11 is primarily involved in the omega-hydroxylation of fatty acids. It plays a significant role in the metabolism of arachidonic acid to 20-HETE, a potent regulator of vascular tone and renal function. The enzyme is also involved in the metabolism of lauric acid and other medium-chain fatty acids.

Clinical Significance

Mutations in the CYP4A11 gene have been associated with hypertension and other cardiovascular diseases. The enzyme's activity can influence blood pressure regulation through its role in the production of 20-HETE, which affects renal sodium transport and vascular smooth muscle contraction.

Expression

CYP4A11 is predominantly expressed in the liver and kidney tissues. Its expression can be induced by various peroxisome proliferator-activated receptor (PPAR) agonists, which are involved in the regulation of lipid metabolism and inflammation.

Related Enzymes

CYP4A11 is part of the CYP4A subfamily, which includes other enzymes such as CYP4A22 and CYP4A10. These enzymes share similar functions and substrate specificities but may differ in their tissue distribution and regulatory mechanisms.

See Also

• Cytochrome P450
• Arachidonic acid
• Hypertension
• Renal function
• Vascular tone