Protein
Oligosaccharide 4-alpha-D-glucosyltransferase
Organism
Cellvibrio japonicus (strain Ueda107)
Function
Alpha-transglucosylase that specifically transfers single glucosyl units from alpha(1->4)-glucans to the non-reducing terminal 4-OH of glucose and alpha(1->4)- and alpha(1->6)-linked glucosyl residues. Acts on amylose, amylopectin, glycogen and maltooligosaccharides, with the highest activity with maltotriose as a donor, and also accepts maltose. Does not act as a hydrolase: weak hydrolysis activity is only observed on the disaccharide maltose.
Similarity
Belongs to the glycosyl hydrolase 31 family.
Sequence
MFRRIAGFSPIFLMLFGSSLPTMGNPVKREIHPDAVFYKEHKLRNDGLVITTNQGNIRLQFKSEAAIEVLYRADSKQLPSFALAQPESAIKAQLTETENHLQFSGGTLTARIQKRPFAISYYRDSELLLAEESGFQVNTDKINFRFYLSPGEKILGGGQRILGMDRRGQRFPLYNRAHYGYSDHSGQMYFGLPAIMSSKQYILVFDNSASGAMDIGKTESDILQLEAKSGRSAYILVAGNSYPSLIENFTQVTGRQPLPPRWALGSFASRFGYRSEAETRATVQKYKTEDFPLDTIVLDLYWFGKDIKGHMGNLDWDKENFPTPLDMMADFKQQGVKTVLITEPFVLTSSKRWDDAVKAKALAKDPQGQPKAFELYFGNGGIIDVFSKEGSRWFSSIYKDLSKQGVAGWWGDLGEPEMHPEDTQHAIGDADTVHNAYGHRWAEMLYQQQLDQFPELRPFIMMRAGFVGSQRYGMIPWTGDVSRTWGGLASQVELALQMSLLGFGYIHSDLGGFADGETLDKEMYIRWLQYGVFQPVYRPHGQDHIPSEPVFQDEETKAILRPLVKLRYRMLPYIYTAAYQNTLTGMPLMRPLFFSDEKNPALIDNKTSYFWGDSLLVTPITQAGVESVSIPAPKGVWFDFWKDTRYQTDGAPLTLPTDLHTIPVLVKAGAFMPYVPAVSTTEDYRSDSLEIHYYADASVPLAQGEIFEDDGKDPNSIKRNQFDLLTLQATHTDNQLHFQLARTGKGYRGMPERRATTLVIHNASDQYQHLDINGKTIAIAQADCASTPALACYDQERRQLQLVFTWGREALNLRLH