CERS1 is a symbol for the gene, Ceramide synthase 1, in humans. Other names include: CerS1; LAG1 longevity assurance homolog 1; Longevity assurance gene 1 protein homolog 1; Protein UOG-1; LAG1; LASS1; UOG1. The encoded protein has an amino acid length of 350 and a mass of 39.5 kDa. Other isoforms may exist. This gene shares homology with other species, including: Mouse.