ID 2.4.1.50 DE procollagen galactosyltransferase. AN hydroxylysine galactosyltransferase. CA (5R)-5-hydroxy-L-lysyl-[collagen] + UDP-alpha-D-galactose = (5R)-5- CA O-(beta-D-galactosyl)-5-hydroxy-L-lysyl-[collagen] + H(+) + UDP. CC -!- Involved in the synthesis of carbohydrate units in complement (cf. CC EC 2.4.1.66). DR A0JPH3, G251A_XENLA; Q5U483, G251B_XENLA; A5PK45, GT251_BOVIN; DR A5PMF6, GT251_DANRE; Q8NBJ5, GT251_HUMAN; Q8K297, GT251_MOUSE; DR Q8IYK4, GT252_HUMAN; Q6NVG7, GT252_MOUSE; O60568, PLOD3_HUMAN; DR Q9R0E1, PLOD3_MOUSE; Q5R6K5, PLOD3_PONAB; Q5U367, PLOD3_RAT ; DR Q20679, PLOD_CAEEL ; //