Activities in Family	β-xylosidase (EC 3.2.1.37); α-L-arabinofuranosidase (EC 3.2.1.55); arabinanase (EC 3.2.1.99); xylanase (EC 3.2.1.8); galactan 1,3-β-galactosidase (EC 3.2.1.145); α-1,2-L-arabinofuranosidase (EC 3.2.1.-); exo-α-1,5-L-arabinofuranosidase (EC 3.2.1.-); [inverting] exo-α-1,5-L-arabinanase (EC 3.2.1.-); β-1,3-xylosidase (EC 3.2.1.-)
	Activities in Sub Family
Mechanism	Inverting
Clan	GH-F
3D Structure Status	5-fold β-propeller
Catalytic Nucleophile/Base	Asp
Catalytic Proton Donor	Glu
Note	Many members have been assigned to subfamilies as described by Mewis et al. (2016) Appl. Environm. Microbiol. in press (PMID: 26729713).
External resources	CAZypedia;
Commercial Enzyme Provider(s)	MEGAZYME; NZYTech; PROZOMIX;
Statistics	GenBank accession (408); Uniprot accession (61); PDB accession (11); 3D entries (5); cryst (0)

Bacteria
Protein Name	EC#	Organism	GenBank	Uniprot	PDB/3D Carbohydrate Ligands Resolution (Å)	Subf
endo-α-1,5-L-arabinanase (AbnA;BSU28810) (Arb43A)	3.2.1.99	Bacillus subtilis subsp. subtilis str. 168	CAA99586.1 AAV87172.1 AIY94210.1 AQR82908.1 AQR87123.1 CAB14841.1 CAB14841.2 NP_390759.1	P94522	1UV4[A] 1.50	5
endo-α-1,5-L-arabinanase / exo-α-1,5-L-arabinanase 43A (ArbA;CJA_0805) (Arb43A)	3.2.1.99 3.2.1.-	Cellvibrio japonicus Ueda107	ACE84667.1 CAA71485.1	B3PKP8 P95470	1GYD[B] 2.05 1GYE[B] α-L-Araf-(1-5)-α-L-Araf 2.5 1GYH[A,B,C,D,E,F] 1.89	5
α-1,5-L-arabinanase (AbnB;HUS_CDS25) (intracellular)	3.2.1.99	Geobacillus stearothermophilus T-6 NCIMB 40222	ACE73676.1	B3EYM8	3CU9[A] 1.06 3D5Y[A] 1.22 3D5Z[A] α-L-Araf-(1-5)-α-L-Araf-(1-5)-β-L-Araf 1.90 3D60[A] 1.90 3D61[A] α-L-Araf-(1-5)-β-L-Araf 1.95	5
endo-α-1,5-L-arabinanase (Abn-ts)	3.2.1.99	Geobacillus thermodenitrificans TS-3	BAB64339.1	Q93HT9	1WL7[A] 1.90	5
exo-α-1,5-L-arabinanase (Arn3;ARN3)	3.2.1.-	uncultured bacterium	ADB43999.1	D2XML8	4KCB[A,B] 2.90	5
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