A plant cell wall polysaccharide
Structure of xylan in hardwood.[ 1]
Plant cell wall is composed of cellulose, hemicellulose, pectin and glycoproteins.[ 2] Hemicelluloses (a heterogeneous group of polysaccharides) cross-link glycans interlocking the cellulose fibers and form a mesh like structure to deposit other polysaccharides.
Xylan (;[ 3] [ 4] ) (CAS number : 9014-63-5) is a type of hemicellulose , a polysaccharide consisting mainly of xylose residues. It is found in plants , in the secondary cell walls of dicots and all cell walls of grasses .[ 5] Xylan is the third most abundant polysaccharide on Earth, after cellulose and chitin .[citation needed ]
^ Horst H. Nimz, Uwe Schmitt, Eckart Schwab, Otto Wittmann, Franz Wolf "Wood" in Ullmann's Encyclopedia of Industrial Chemistry 2005, Wiley-VCH, Weinheim. doi :10.1002/14356007.a28_305
^ Carpita, Nicholas C. (2011-01-01). "Update on Mechanisms of Plant Cell Wall Biosynthesis: How Plants Make Cellulose and Other (1→4)-β-d-Glycans" . Plant Physiology . 155 (1): 171–184. doi :10.1104/pp.110.163360 . ISSN 0032-0889 . PMC 3075763 . PMID 21051553 .
^ Collins English Dictionary
^ Houghton Mifflin Harcourt, The American Heritage Dictionary of the English Language , Houghton Mifflin Harcourt.
^ Mellerowicz, E. J.; Gorshkova, T. A. (2011-11-16). "Tensional stress generation in gelatinous fibres: a review and possible mechanism based on cell-wall structure and composition" . Journal of Experimental Botany . 63 (2): 551–565. doi :10.1093/jxb/err339 . ISSN 0022-0957 . PMID 22090441 .