BETA-1,4-GALACTOSYLTRANSFERASE 1 (EC 2.4.1.-) (BETA-1,4-GALTASE 1) (BETA4GAL-T1) (B4GAL-T1) (UDP-GALACTOSE:BETA-N-ACETYLGLUCOSAMINE BETA- 1,4-GALACTOSYLTRANSFERASE 1) (UDP-GAL:BETA-GLCNAC BETA-1,4- GALACTOSYLTRANSFERASE 1) [INCLUDES: LACTOSE SYNTHASE A PROTEIN (EC 2.4.1.22); N-ACETYLLACTOSAMINE SYNTHASE (EC 2.4.1.90) (NAL SYNTHETASE); BETA-N-ACETYLGLUCOSAMINYL-GLYCOPEPTIDE BETA-1,4- GALACTOSYLTRANSFERASE (EC 2.4.1.38); BETA-N-ACETYLGLUCOSAMINYL- GLYCOLIPID BETA-1,4-GALACTOSYLTRANSFERASE (EC 2.4.1.-)]. [Source:SWISSPROT;Acc:P15291]