This entry represents N-terminal acetyltransferase A (NatA) auxiliary subunit (also known as NMDA receptor-regulated protein 1 [1]), which is a non-catalytic component of the NatA N-terminal acetyltransferase that catalyses acetylation of proteins beginning with Met-Ser, Met-Gly and Met-Ala. N-terminal acetylation plays a role in normal eukaryotic translation and processing, protecting against proteolytic degradation and protein turnover. NAT1 anchors ARD1 and NAT5 to the ribosome, and may present the N terminus of nascent polypeptides for acetylation [2-4].

1: N-methyl-D-aspartate receptors regulate a group of transiently expressed genes in the developing brain. Sugiura N, Patel RG, Corriveau RA; J Biol Chem. 2001;276:14257-14263. PMID:11297529

2: ARD1 and NAT1 proteins form a complex that has N-terminal acetyltransferase activity. Park EC, Szostak JW; EMBO J. 1992;11:2087-2093. PMID:1600941

3: The yeast N(alpha)-acetyltransferase NatA is quantitatively anchored to the ribosome and interacts with nascent polypeptides. Gautschi M, Just S, Mun A, Ross S, Rucknagel P, Dubaquie Y, Ehrenhofer-Murray A, Rospert S; Mol Cell Biol. 2003;23:7403-7414. PMID:14517307

4: Molecular basis for N-terminal acetylation by human NatE and its modulation by HYPK. Deng S, McTiernan N, Wei X, Arnesen T, Marmorstein R; Nat Commun. 2020;11:818. PMID:32042062