Tissue specific transplantation antigen P35B is a NADP(H)-binding protein. It catalyze the two-step epimerase and the reductase reactions in GDP-D-mannose metabolism, converting GDP-4-keto-6-D-deoxymannose to GDP-L-fucose. GDP-L-fucose is the substrate of several fucosyltransferases involved in the expression of many glycoconjugates, including blood group ABH antigens and developmental adhesion antigens. Mutations in this gene may cause leukocyte adhesion deficiency, type II.
3-5 epimerase/4-reductase; FX; GDP-4-keto-6-deoxy-D-mannose epimerase-reductase; GDP-4-keto-6-deoxy-D-mannose-3,5-epimerase-4-reductase; GDP-fucose synthase; GDP-L-fucose synthase; GDP-L-fucose synthetase; Protein FX; Red cell NADP(H)-binding protein; SDR4E1; short chain dehydrogenase/reductase family 4E, member 1; Short-chain dehydrogenase/reductase family 4E member 1; testis tissue sperm-binding protein Li 45a; tissue specific transplantation antigen 3; Tissue specific transplantation antigen P35B; Transplantation antigen P35B; Tum-P35B antigen