Exostosin-Like 1, or Exostosin-like glycosyltransferase 1, is a human gene encoded by EXTL1. It may also be known as: Exostosin-like 1; Exostosin-L; Glucuronosyl-N-acetylglucosaminyl-proteoglycan 4-alpha-N-acetylglucosaminyltransferase; Multiple exostosis-like protein; Exostosin-like 1 ; alpha-N-acetylglucosaminyltransferase II; glucuronyl-N-acetylglucosaminylproteoglycan alpha-1,4-N- acetylglucosaminyltransferase; EXTL. The encoded protein is an enzyme with an amino acid length of 676 and a mass of 74.7 kDa. Exostosin-Like 1 is a member of the Glycosyltransferase 47 family. Homologs of this gene exist in other organisms, including: Mouse, Rat.