Here are recombinant proteins for S100A1, the approved symbol for the human gene, 'S100 calcium binding protein A1'. With a Uniprot ID of P23297, this protein is listed as having 94 residues in length and a mass of 10.6 kDa. The following protein function has been assigned: 'Probably acts as a Ca(2+) signal transducer.' A subcellular localization as 'cytoplasmic' is noted. Orthologs are reported in these species: mouse, rat, chimpanzee. S100A1 may also be known by other designations: 'protein S100-A1, S-100 protein alpha chain, S-100 protein subunit alpha, S100 alpha, S100 protein, alpha polypeptide'.