| Identification | Back Directory | [Name]
Xylotetraose | [CAS]
22416-58-6 | [Synonyms]
Xylotetrose
Xylotetraose
4-O-[4-O-[4-O-(β-D-Xylopyranosyl)-β-D-xylopyranosyl]-β-D-xylopyranosyl]-D-xylose
O-beta-D-Xylopyranosyl-(1-4)-O-beta-D-xylopyranosyl-(1-4)-O-beta-D-xylopyranosyl-(1-4)-D-xylose
D-Xylose, O-.beta.-D-xylopyranosyl-(1?4)-O-.beta.-D-xylopyranosyl-(1?4)-O-.beta.-D-xylopyranosyl-(1?4)- | [Molecular Formula]
C20H34O17 | [MOL File]
22416-58-6.mol | [Molecular Weight]
546.47 |
| Chemical Properties | Back Directory | [Melting point ]
219-220°C | [alpha ]
-57.8 º (c=1% in H2O) | [Boiling point ]
907.1±65.0 °C(Predicted) | [density ]
1.72±0.1 g/cm3(Predicted) | [pka]
12.40±0.20(Predicted) |
| Hazard Information | Back Directory | [Definition]
ChEBI: A tetrasaccharide comprised of four D-xylose residues connected by β(1→4) linkages. | [Uses]
Xylotetrose is a xylose oligomer that is of interest to many fields of study and is an intermediate reaction product of the hydrolysis of hemicelluloses. |
| Questions and Answers (Q&A) | Back Directory | [Reactions]
A novel xylanase (xylanase IV) which produces xylotetraose as the only low-molecular-weight oligosaccharide from oat spelt xylan was isolated from the culture medium of Aeromonas caviae ME-1. By sodium dodecyl sulfate-polyacrylamide gel electrophoresis, the xylanase IV molecular weight was 41,000. Xylanase IV catalyzed the hydrolysis of oat spelt xylan, producing exclusively xylotetraose. The acid hydrolysate of the product gave d-xylose. The enzyme did not hydrolyze either p-nitrophenyl-(beta)-d-xyloside, small oligosaccharides (xylobiose and xylotetraose), or polysaccharides, such as starch, cellulose, carboxymethyl cellulose, laminarin, and (beta)-1,3-xylan.
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