ID 2.4.1.398 DE beta-galactofuranoside beta-1,5-galactofuranosyltransferase. CA a beta-D-galactofuranoside + UDP-alpha-D-galactofuranose = a beta-D-Galf- CA (1->5)-beta-D-galactofuranoside + UDP + H(+). CC -!- Requires Mn(2+). CC -!- The enzyme, characterized from the flilamentous fungi Aspergillus CC nidulans and Aspergillus fumigatus, participates in the synthesis of CC fungal-type galactomannan and O-mannose-type galactomannan, which are CC embedded in the fungal cell walls. CC -!- While the reaction shown here describes the transfer of one CC galactofuransyl residue, the enzyme can add up to 5 more CC galactofuranosyl residues. //