AANAT Antibody – Rabbit Polyclonal

The protein encoded by this gene belongs to the acetyltransferase superfamily. It is the penultimate enzyme in melatonin synthesis and controls the night/day rhythm in melatonin production in the vertebrate pineal gland. Melatonin is essential for the function of the circadian clock that influences activity and sleep. This enzyme is regulated by cAMP-dependent phosphorylation that promotes its interaction with 14-3-3 proteins and thus protects the enzyme against proteasomal degradation. This gene may contribute to numerous genetic diseases such as delayed sleep phase syndrome. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2009]

AA-NAT var1: Catalyzes the N-acetylation of serotonin into N- acetylserotonin. Controls the night/day rhythm of melatonin production in the pineal gland. Has a relative affinity for hydroxylated versus non-hydroxylated arylalkylamines. Belongs to the acetyltransferase family. AANAT subfamily. Monomer. Interacts with YWHAZ; the interaction requires phosphorylation on Thr-31, and modulates the enzymatic activity of AANAT through preventing dephosphorylation and/or proteolysis and stabilizing substrate binding. Subsequently, a second molecule of AANAT can bind, via the phosphorylated Ser-205 site, the other YWHAZ monomer with similar effect.

Protein type: Acetyltransferase; EC 2.3.1.87; Amino Acid Metabolism - tryptophan

Chromosomal Location of Human Ortholog: 17q25.1

Cellular Component: perinuclear region of cytoplasm; cytosol

Molecular Function: arylamine N-acetyltransferase activity; aralkylamine N-acetyltransferase activity

Biological Process: N-terminal protein amino acid acetylation; circadian rhythm; response to light stimulus; melatonin biosynthetic process; response to copper ion; response to zinc ion; indolalkylamine biosynthetic process; response to cytokine stimulus; response to calcium ion; response to insulin stimulus; response to corticosterone stimulus

Disease: Delayed Sleep Phase Syndrome, Susceptibility To