CKMT1A encodes the human gene, Creatine kinase, mitochondrial 1A. It may also be known as: Creatine kinase U-type, mitochondrial; Acidic-type mitochondrial creatine kinase; Mia-CK; Ubiquitous mitochondrial creatine kinase; U-MtCK; Creatine kinase U-type, mitochondrial . The encoded protein is an enzyme with an amino acid length of 417 and a mass of 47.0 kDa. CKMT1A is a member of the ATP:guanido phosphotransferase family. Homologs of this gene exist in other organisms, including: Chicken.