LSP1 encodes the human gene, Lymphocyte-specific protein 1. It may also be known as: 47 kDa actin-binding protein; 52 kDa phosphoprotein; pp52; Lymphocyte-specific antigen WP34; WP34. The encoded protein has an amino acid length of 339 and a mass of 37.2 kDa. Other isoforms may exist. Homologs of this gene exist in other organisms, including: Mouse, Fly, Yeast, Rat, Arabidopsis, Zebrafish, Frog, Chicken.