Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

1,4-a-glucan, branching

Table 4.6.14 Enzyme activities (1,4-a-glucan branching enzyme) in liver, muscle, and fibroblasts... [Pg.458]

It is noteworthy in passing that the branching enzyme involved in the synthesis of potato amylopectin acts on a complex of two chains, each containing 40 D-glucosyl residues. Branching is suggested to take place between two adjacent chains of 1,4-a-glucan that are covalently attached to the protein primer. [Pg.293]

Dextran sulfate A chemically sulfated (1 —> 4)-/3-D-, (1 - 3)-a-D-branched glucan polymer... [Pg.286]

Dextran is a structurally heterogeneous glucan containing linear and branched sequences with a preponderance of 1,6-a-D (isomaltose) and a smaller percentage of 1,2-a, 1,3-a, and 1,4-a-n linkages. This heterogeneity results in easy dispersion in hot and cold water. Insolubility is associated with 1,3-a linkages (Sidebotham, 1974). [Pg.168]

Figure 10-5 Diagrammatic Representation of Amylopectin Structure. Lines represent a-D-glucan chains linked by 1,4-bonds. The branch points are 1,6-a glucosidic bonds. Source From J.J. Marshall, Starch Degrading Enzymes, Old and New, Starke, Vol. 27, pp. 377-383, 1975. Figure 10-5 Diagrammatic Representation of Amylopectin Structure. Lines represent a-D-glucan chains linked by 1,4-bonds. The branch points are 1,6-a glucosidic bonds. Source From J.J. Marshall, Starch Degrading Enzymes, Old and New, Starke, Vol. 27, pp. 377-383, 1975.
Borovsky, D., Smith, E. E., and Whelan, W. J. 1975. Purification and properties of potato 1,4-a-D-glucan 1,4-a-D-glucan, 6-a-(l,4-a-D-glucano)-transferase. Evidence a dual catalytic function in amylose branching enzyme. Eur. J. Biochem. 59, 615-625. [Pg.173]

Synthesis of the 1,6-a-D-glucose bonds in amylopectin is catalyzed by a branching enzyme [E.C. 2.4.1.18 1,4-a-D-glucan 6-a-(l,4-a-glucano)-transferase reaction 3]. Amylopectin contains longer chains (about 20-24 glucosyl units) and has less... [Pg.603]

Most starches are composed of two kinds of polysaccharides, a linear o -(1 4) linked glucan, called amylose, and an o -(1 4) linked glucan with 4.2 to 5.9% a-(l 6) branch linkages, called amylopectin. See O Fig, 1 for the chemical structure of a segment of amylose and a segment of amylopectin and O Table 1 for the percent branching in amylopectin for several different starches. [Pg.1440]

ADP-glucose - - a-l,4-glucan —> a- 1,4-glucosyl-glucan - - ADP a-1,4-oligosaccharide a-1,4-glucan o -l,4-a-l,6 branched glucan... [Pg.432]


See other pages where 1,4-a-glucan, branching is mentioned: [Pg.423]    [Pg.98]    [Pg.745]    [Pg.456]    [Pg.457]    [Pg.525]    [Pg.181]    [Pg.183]    [Pg.51]    [Pg.279]    [Pg.257]    [Pg.423]    [Pg.98]    [Pg.745]    [Pg.456]    [Pg.457]    [Pg.525]    [Pg.181]    [Pg.183]    [Pg.51]    [Pg.279]    [Pg.257]    [Pg.135]    [Pg.53]    [Pg.295]    [Pg.416]    [Pg.333]    [Pg.70]    [Pg.340]    [Pg.38]    [Pg.133]    [Pg.479]    [Pg.496]    [Pg.256]    [Pg.86]    [Pg.606]    [Pg.142]    [Pg.31]    [Pg.40]    [Pg.89]    [Pg.153]    [Pg.16]    [Pg.616]    [Pg.281]    [Pg.2353]    [Pg.2365]    [Pg.315]    [Pg.432]    [Pg.433]   


SEARCH



1,4-a-glucan, branching enzyme

A Branch

A-Glucans

A-branched

Glucan

Glucane

Glucanes

Glucans

© 2024 chempedia.info