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nascent polypeptide-associated complex (NAC), alpha subunit The nascent polypeptide-associated complex (NAC) is a complex, conserved from archaea to human, that plays an important role in co translational targeting of nascent polypeptides to the endoplasmic reticulum (ER). In eukaryotes, under physiological conditions, the complex is a stable heterodimer of the NAC alpha subunit and the NAC beta subunit, also known as basal transcription factor 3b (BTF3b). An imbalance of the relative concentrations has been observed in diseases, like Alzheimer's, AIDS, and ulcerative colitis. NAC alpha consists of a NAC domain, also present in BTF3, and a unique C-terminal ubiquitin-associated (UBA) domain. |
Jiyao W et al.(2023). "The conserved domain database in 2023.",