摘要:
An object of the present invention is to provide a glucosamine-containing glucan, a modified product and a conjugate thereof. The glucosamine-containing glucan of the present invention is a glucosamine-containing glucan wherein the glucan has a plurality of non-reducing ends and at least one glucosamine residue is bound via an α-1,4-bond to each of two or more non-reducing ends of the branched α-1,4-glucan, but no glucosamine residue is present at a position other than the non-reducing ends of the branched α-1,4-glucan, wherein the degree of polymerization of the glucan is 15 or more and 4 x 10 5 or less. Theglucosamine-containingglucan of the present invention can be provided by allowing an α-glucan phosphorylase to act on an aqueous solution comprising a branched α-1,4-glucan and glucosamine-1-phosphate.
摘要:
The present invention provides a technique for synthesizing a carotenoid composition by a genetic recombination technique. A transformant in which a first promoter, an upstream gene of a carotenoid biosynthesis gene including a crtY and crtZ operably linked to the first promoter, a second promoter having higher promoter intensity than the first promoter, and a ZEP gene and a CCS gene operably linked to the second promoter have been introduced into a host cell.
摘要:
An object of the present invention is to provide a glucan containing at least one residue selected from an N-acetylglucosamine residue and a galactose residue, and a modified product. The branched glucan of the present invention is a branched glucan wherein the branched glucan has a plurality of non-reducing ends and at least one residue selected from an N-acetylglucosamine residue and a galactose residue is bound via an α-1,4-bond to each of two or more non-reducing ends of the branched α-1,4-glucan, but neither an N-acetylglucosamine residue nor a galactose residue is present at the position other than the non-reducing ends of the branched α-1,4-glucan.
摘要:
An object of the present invention is to provide a uronic acid-containing glucan or a modified product thereof. The glucuronic acid-containing glucan of the present invention is a glucuronic acid-containing glucan in which a glucuronic acid residue is bound to at least one non-reducing end of a glucan, and the glucan is a branched α-1,4 glucan or a linear α-1,4 glucan. The glucuronic acid-containing glucan of the present invention can be provided by allowing α-glucan phosphorylase derived from Aquifex aeolicus VF5 to act on glucuronic acid-1-phosphate to thereby transfer a glucuronic acid residue to the non-reducing end of the receptor glucan.