Recombinant proteins for sirtuin 1 are available from various sources. In humans, this protein has a Uniprot ID of Q96EB6. This protein is 747 amino acids in length and 81.7 kilodaltons in mass. It has been designated a subcellular localization as: cytoplasmic, nuclear. This protein is encoded by the gene SIRT1. Other names also exist, such as: NAD-dependent protein deacetylase sirtuin-1, SIR2-like protein 1, regulatory protein SIR2 homolog 1, sirtuin type 1. As many as 2 isoforms have been named. This protein is conserved in other species, including: mouse, rat.