Xylotetraose is a hydrolysis product of Xylan[1]. Xylan is a polysaccharide made from units of xylose and contains predominantly β-D-xylose units linked as in cellulose[2]. Xylotetraose can be used for enzyme biochemical analysis[1][3][4].
[1]. Kamble RD, et al. Isolation, purification, and characterization of xylanase produced by a new species of bacillus in solid state fermentation. Int J Microbiol. 2012;2012:683193. [2]. Martinez-Abad A, et al. Regular Motifs in Xylan Modulate Molecular Flexibility and Interactions with Cellulose Surfaces. Plant Physiol. 2017 Oct 25. pii: pp.01184.2017. [3]. Laitinen T, et al. MM-PBSA free energy analysis of endo-1,4-xylanase II (XynII)-substrate complexes: binding of the reactive sugar in a skew boat and chair conformation. Org Biomol Chem. 2003 Oct 21;1(20):3535-40. [4]. Cervera Tison M, et al. Molecular determinants of substrate and inhibitor specificities of the Penicillium griseofulvum family 11 xylanases. Biochim Biophys Acta. 2009 Mar;1794(3):438-45.