Mechanism	Retaining e
Clan	GH-A
3D Structure Status	( β / α ) 8 barrel
Catalytic Nucleophile/Base	Glu (experimental)
Catalytic Proton Donor	Glu (experimental)
Note	Once known as cellulase family A; many members have been assigned to subfamilies as described by Aspeborg et al. (2012) BMC Evol Biol. 12(1):186 (PMID: 22992189).
External resources	CAZypedia; PROSITE;
Statistics	GenBank accession (6); Uniprot accession (3); PDB accession (6); 3D entries (1); cryst (0)

Bacteria
Protein Name	EC#	Organism	GenBank	Uniprot	PDB/3D Carbohydrate Ligands Resolution (Å)	Subf
xylanase (M6;CtM6;CtXyl5A;Cthe_2193) (arabinoxylan-specific) (Xyl5A)	3.2.1.-	Acetivibrio thermocellus ATCC 27405	ABN53395.1	A3DHG6	2Y8K[A] 1.47 5AK1[A] 2.64 5G56[A] 2.64 5LA0[A] α-L-Arap 1.65 5LA1[A] β-D-Xylp 1.90 5LA2[A,B] β-D-Xylp-(1-4)-β-D-Xylp-(1-4)-β-D-Xylp-(1-4)[α-L-Araf-(1-3)]-α-D-Xylp β-L-Arap 1.65	34
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