Troponin C Type 2, Fast (TNNC2)

The troponin C protein is the calcium-binding subunit of the troponin complex. It occurs in 2 distinct isoforms: fast skeletal troponin C, which is expressed exclusively in fast-twitch skeletal muscle, and slow/cardiac troponin C, which is expressed in both cardiac and slow-twitch skeletal muscle. Gahlmann and Kedes (1990) described the structure and sequence of the gene for fast-twitch troponin C.By PCR-based analysis of a monochromosomal hybrid panel followed by analysis of the Genebridge 4 radiation hybrid panel, Townsend et al. (1997) mapped the TNNC2 gene to chromosome 20. Tiso et al. (1997) independently mapped the TNNC2 gene to 20q12-q13.11 using PCR of radiation hybrids.