The function of MYOCD (myocardin, ENSG00000141052) is as follows. Smooth muscle cells (SM) and cardiac muscle cells-specific transcriptional factor which uses the canonical single or multiple CArG boxes DNA sequence. Acts as a cofactor of serum response factor (SRF) with the potential to modulate SRF-target genes. Plays a crucial role in cardiogenesis, urinary bladder development, and differentiation of the smooth muscle cell lineage (myogenesis) (By similarity). Positively regulates the transcription of genes involved in vascular smooth muscle contraction (By similarity). {ECO:0000250, ECO:0000250|UniProtKB:Q8R5I7, ECO:0000269|PubMed:12640126, ECO:0000269|PubMed:31513549}.