PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 11801692-1 2002 The majority of xenoreactive natural Abs in humans recognize the carbohydrate Ag present on pig tissue, Galalpha1-3Galbeta1-4GlcNAc-R (alphaGal), synthesized by the enzyme UDP galactose:beta-D-galactosyl-1,4-N-acetyl-D-glucosaminide alpha(1-3)galactosyltransferase or alphaGT. Carbohydrates 65-77 N-acetyllactosaminide alpha-1,3-galactosyltransferase Sus scrofa 172-264