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Updated: May 26, 2026

Identification of MyoD Interactome Using Tandem Affinity Purification Coupled to Mass Spectrometry
Published on: May 17, 2016
Skeletal muscle-specific variant of nascent polypeptide associated complex alpha (skNAC): implications for a specific
Felicitas Berger1, Janine Berkholz, Theresia Breustedt
1Charité - University Medicine Berlin, Institute of Physiology, Thielallee 71, D-14195 Berlin, Germany.
Abstract:
NAC (nascent polypeptide associated complex) is a heterodimer consisting of an α and a β subunit. skNAC (skeletal and heart muscle-specific form of αNAC) is a variant of αNAC, which is induced in muscle differentiation and regeneration. We show here that skNAC expression is regulated by p38 MAPK, which plays a crucial role in myogenesis. Furthermore, inhibition of skNAC expression in myoblasts via specific siRNAs might lead to disturbed incorporation of myosin heavy chain (MyHC) into sarcomeres, however, it has no inhibitory effect on absolute MyHC protein levels. Taken together, our data suggest that skNAC regulates specific aspects of myogenesis.
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