ID 2.4.1.36 DE alpha,alpha-trehalose-phosphate synthase (GDP-forming). AN GDP-glucose-glucosephosphate glucosyltransferase. AN trehalose phosphate synthase (GDP-forming). CA D-glucose 6-phosphate + GDP-alpha-D-glucose = alpha,alpha-trehalose CA 6-phosphate + GDP + H(+). CC -!- See also EC 2.4.1.15. //