Protein
Alpha-1,4-glucan:maltose-1-phosphate maltosyltransferase 2
Organism
Streptomyces coelicolor (strain ATCC BAA-471 / A3(2) / M145)
Function
Maltosyltransferase that uses maltose 1-phosphate (M1P) as the sugar donor to elongate linear or branched alpha-(1->4)-glucans. Maltooligosaccharides with a degree of polymerization (DP) superior or equal to 4 are efficient acceptors, with DP6 being optimal in the GlgE-catalyzed polymerization with M1P. Is probably involved in a branched alpha-glucan biosynthetic pathway from trehalose, together with TreS, Mak and GlgB.
Similarity
Belongs to the glycosyl hydrolase 13 family. GlgE subfamily.
Sequence
MRMSATVGIGRIPVRDVQPVVEYGRRPAKAVTGETFEVTATVFREGHDAVAANVVLKDPEGRPGPWTPMRELAPGSDRWGATVTPGAPGNWTYRVEAWSDPVATWRHAARIKVPAGIDAGLVLEEGSELYRRAAAGVPKDSGRDVLLAAATALLDDTLPVATRLAAALTPQVDAVLARHPLRDLVTSSDPLPLLVERERALYGAWYEFFPRSEGTPHTPHGTFRTAARRLPAIAAMGFDVVYLPPIHPIGTTHRKGRNNTLSATGDDVGVPWAIGSPEGGHDSIHPALGTLDDFDHFVTEAARHGLEIALDFALQCSPDHPWVHKHPEWFHHRPDGTIAHAENPPKKYQDIYPIAFDADPDGLATETVRILRHWMDHGVRIFRVDNPHTKPVAFWERVIADINGTDPDVIFLAEAFTRPAMMATLAQIGFQQSYTYFTWRNTKQELTEYLEELSGEAAAYMRPNFFANTPDILHAYLQHGGRPAFEVRAVLAATLSPTWGIYSGYELCENTPLREGSEEYLDSEKYQLKPRDWTRAAREGTTIAPLVTRLNTIRREHPALHRLRNLRFHHTDNDALIAYSKRVGSDVVLVVANLDPHRTQEATISLDMPQLGLDWHDSVPVHDELTGRTYHWGRANYVRLEPGRAPAHVFHVRRPSAAAAPQNGGSGAS