Non-reducing end

Fig. 38.—Stereo view of three turns of the 2-fold galactomannan (45) helix containing galactose side-chains on alternate mannose residues. In this conformation, the side chains are turned up toward the non-reducing end, and the backbone is stabilized by intrachain hydrogen bonds. The helix axis is represented by the vertical line.

Table III. Subsite affinities At for PGII (i denotes the subsite number). Subsites with a prefix are located towards the non-reducing end of the substrate while subsites with a + prefix are located towards the reducing end. The active site is located between subsites -1 and +1. Subsites -3 to -1-1 were determined as one value.

During P-elimination of pectic substances, a double bond is created between C-4 and C-5 of the new non-reducing end, leading to absorbance at 235 nm (by conjugation with the carboxyl groups). This spectral property of p-eliminated pectins was used to follow their... 

Fructooligosaccharides (FOS) are ((32-1) fructose oligomers bound to glucose at the non-reducing end industrially produced from sucrose by fructosyltransferases (sucrose 1-fructosyl transferases EC 2.4.1.9).128... 

Fig. 3.—Section of xylan chain with non-reducing end of n-arabinofuranoside.

Cellobiohydrolase I (CBH I, 1,4-jS-D-glucan-cellobiohydrolase, E.C. 3.2.1.91) is the main protein (ca. 60%) of the cellulase complex produced by T. reesei strains. CBH I hydrolyses crystalline cellulose, acid swollen cellulose and 4-methylumbelliferyl-cellodex-trins by cleaving off the terminal cellobiose unit from the non reducing end of the chain. It operates with retention of configuration in the reaction products 19,20. The abundance of this enzyme and its stability has facihtated its purification to homogeneity... 

Exo-chitinases catalyse processive release of diacetylchitobiose units from the non-reducing ends of chitin chains ... 

Glycogen synthase now transfers glucose residues one by one from UDP-glucose to the non-reducing ends of the available branches. ... 

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