– Promotes dimerization of NF-kappa-B subunits and regulates NF-kappa-B transcription factor activity. Promotes growth of cardiomyocytes, but not cardiomyocyte proliferation. Promotes cardiac muscle hypertrophy. Plays a role in the regulation of the growth of actin filaments. Inhibits the activity of the F-actin-capping protein complex formed by the CAPZA1 and CAPZB heterodimer. Myotrophin Protein, Bovine, Recombinant (His) is expressed in yeast with N-10xHis tag. The predicted molecular weight is 15.2 kDa and the accession number is Q3T0F7.