. 2014 Feb;2(2):17. doi: 10.3978/j.issn.2305-5839.2014.02.07

Table 1. Source and structure of some important glucans.

Structure	Trivial name(s)	Sources		Physiological role	References
(1→3)-α-d-glucan	Pseudonigeran	Fungi	Aspergillus niger	Wall component	(2)
(1→4)-α-d-glucan	Amylose^c	Higher plants		Storage	(3)
(1→6)-α-d-glucan		Fungi	Armillariella tabescens		(4)
(1→6)-α-d-glucan		Fungi	Sarcodon aspratus		(5,6)
(1→3)(1→4)-α-d-glucan^a	Nigeran	Fungi	Aspergillus niger		(7)
	Elsinan	Fungi	Elsinoe leucospila		(8)
	Isolichenan	Lichens	Cetraria islandica		(9)
(1→4)(1→6)-α-d-glucan^a	Pullulan	Fungi	Aureobasidium pullulans		(10-12)
(1→4)(1→6)-α-d-glucan^a	Pullulan	Fungi	Teloschistes flavicans		(13)
(1→4)(1→6)-α-d-glucan^b	Amylopectin^c	Higher plants		Storage	(3)
(1→4)(1→6)-α-d-glucan^b	Glycogen	Animals		Storage	(14)
(1→6)(1→3)-α-d-glucan^b	Dextran	Microorganisms	Leuconostoc mesenteroides	Exopolysaccharide	(15)
(1→3)-β-d-glucan	Callose	Higher plants		Wall anti-stress component	(16)
	Paramylon	Protozoa	Euglena gracilis	Storage	(17,18)
	Curdlan	Microorganisms	Agrobacterium sp., Streptococcus mutans, Alcaligenes faecalis	Exopolysaccharide	(18,19)
	Pachyman	Fungi	Poria cocos	Wall component	(20)
	Laminarin	Algae, lichens		Storage	(21)
(1→4)-β-d-glucan	Cellulose	Algae, high plants		Wall component, fibrils	(22)
(1→4)-β-d-glucan	Microbial cellulose	Microorganisms		Exopolysaccharide	(23)
(1→6)-β-d-glucan	Pustulan	Lichens	Lasallia pustulata		(24)
(1→6)-β-d-glucan		Fungi	Guignardia citricarpa	Exopolysaccharide	(25)
(1→3)(1→4)-β-d-glucan^a	Lichenan	Lichens	Cetraria islandica		(26)
(1→3)(1→4)-β-d-glucan^a	Cereal β-d-glucan	Higher plants	Cereals	Wall component	(27)
(1→3)(1→4)-β-d-glucan^b	Calocyban	Fungi	Calocybe indica	Wall component	(28)
(1→3)(1→6)-β-d-glucan^b	Lentinan	Fungi	Lentinula edodes	Wall component	(29)
	Grifolan		Grifola frondosa	Wall component	(30,31)
	Schizophyllan		Schizophyllan commune	Exopolysaccharide	(32)
	Scleroglucan		Sclerotium sp.	Exopolysaccharide	(33)
	Pleuran		Pleurotus ostreatus	Wall component	(34)
	Botryosphaeran		Botryosphaeria sp.	Wall component	(35)
(1→4)(1→3)-α,β-glucan^a		Fungi	Termitomyces microcarpus	Wall component	(36)
(1→6)(1→4)-α,β-glucan^a		Fungi	Astraeus hygrometricus	Wall component	(37)
(1→6)(1→4)-α,β-glucan^b		Fungi	Calocybe indica	Wall component	(28)
(1→3)(1→6)-α,β-glucan^b	Piptoporan I		Piptoporus betulinus	Wall component	(38)

^a, linear; ^b, branched; ^c, starch component.