Activities in Family	A xylan binding function has been demonstrated in several cases and affinity with mixed β-1,3/β-1,4-glucans in one. In several cases a thermostabilizing effect has also been seen.
3D Structure Status	β-sandwich
Note	Formerly known as X6 modules or thermostabilizing domains
External resources	CAZypedia; HOMSTRAD;
Commercial Enzyme Provider(s)	NZYTech; PROZOMIX;
Statistics	GenBank accession (1821); Uniprot accession (75); PDB accession (13); 3D entries (4); cryst (0)

Bacteria
Protein Name	EC#	Organism	GenBank	Uniprot	PDB/3D Carbohydrate Ligands Resolution (Å)
xylanase Y / feruloyl esterase (XynY;LX5) (Xyn10B)		Acetivibrio thermocellus YS	CAA58242.1 AAR39814.1	P51584	1DYO[A,B] 2.1 1H6X[A] 2.23 1H6Y[A,B] 2.12
xylanase Y / feruloyl esterase (XynY;LX5) (Xyn10B)		Acetivibrio thermocellus YS	CAA58242.1 AAR39814.1	P51584	2W5F[A,B] β-D-Xylp-(1-4)-β-D-Xylp-(1-4)-β-D-Xylp 1.90 2WYS[A,B] β-D-Xylp β-D-Xylp-(1-1)-<non_carb> β-D-Xylp-(1-4)-β-D-Xylp-(1-4)-β-D-Xylp 2.75 2WZE[A,B] D-1-deoxy-Lyxp β-D-4-deoxy-Xylp β-D-4-deoxy-Xylp-(1-4)-β-D-Xylp β-D-Xylp-(1-4)-D-1-deoxy-Xylp 2.50
xylanase C / 10 C (XynC;X-K) (Xyn10C)		Paenibacillus barcinonensis BP-23	CAA07173.1	O69230	4XUN[A,B,C] 1.75 4XUP[A,B,D,F] 2.43 4XUQ[A,B,C] β-D-Xylp β-D-Xylp-(1-4)-β-D-Xylp 1.95 4XUR[A,B,C] β-D-Xylp-(1-1)-<non_carb> β-D-Xylp-(1-4)-β-D-Xylp-(1-4)-β-D-Xylp β-D-Xylp-(1-4)-β-D-Xylp-(1-4)-β-D-Xylp-(1-4)-β-D-Xylp 1.67 4XUT[A,B,C] β-D-Glcp-(1-4)-β-D-Glcp 1.80
xylanase C / 10 C (XynC;X-K) (Xyn10C)		Paenibacillus barcinonensis BP-23	CAA07173.1	O69230	4XUO[A,B] 1.70 4XUP[A,B,C,D,E,F] 2.43
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