Provided below are ELISA kits targeting myosin light chain 4, a human protein encoded by MYL4. This protein is 197 amino acids long with a reported mass of 21.6 kDa. There is a noted implication in Atrial fibrillation, familial, 18. Other alias names for this protein include: atrial myosin light chain 1, myosin light chain 1 embryonic muscle/atrial isoform, myosin light chain alkali GT-1 isoform, myosin atrial/fetal muscle light chain, myosin light polypeptide 4 alkali; atrial embryonic, AMLC, and GT1.