Human serum albumin form the precursor protein, only 585 amino acids are observed in the final product present in the blood; the first 24 amino acids (here italicized), including the signal peptide (1–18) and propeptide (19–22, or 19–24) portions, are cleaved after translation. Human serum albumin has been shown to interact with FCGRT. Human serum albumin Human serum albumin is the serum albumin found in human blood. It is the most abundant protein in human blood plasma; it constitutes about half of serum protein. It is produced in the liver. It is soluble in water and monomeric. Albumin transports hormones, fatty acids, and
P-selectin glycoprotein ligand-1 is a glycoprotein found on white blood cells and endothelial cells that binds to P-selectin (P stands for platelet), which is one of a family of selectins that includes E-selectin (endothelial) and L-selectin (leukocyte). Selectins are part of the broader family of cell adhesion molecules. PSGL-1 can bind to all three members of the family but binds best (with the highest affinity) to P-selectin. PSGL-1 protein requires two distinct posttranslational modifications to gain its selectin binding activity: PSGL-1 is expressed on all white blood cells and plays an important role in the recruitment of white blood cells into inflamed tissue: