Activities in Family	Binding to xylans (birchwood and oat spelt)
Mechanism
Note	Created after Ito et al. 2022 [PMID=36312872] who demonstrated the xylan binding activity in the PxXyl43A protein (Paenibacillus xylaniclasticus TW1). This family also include the binding module of Fibrobacter succinogenes S85 protein FSUAXH1 described by Yoshida et al., 2010 [PMID: 20709893].
Statistics	GenBank accession (13373); Uniprot accession (69); PDB accession (31); 3D entries (16); cryst (0)

Bacteria
Protein Name	EC#	Organism	GenBank	Uniprot	PDB/3D Carbohydrate Ligands Resolution (Å)
BLi00864 or BL03023 (XynB)		Bacillus licheniformis DSM 13 = ATCC 14580	AAU39798.1 AAU22449.1		6MS2[A] 2.49 6MS3[A,B] 1.95
β-xylosidase (BpX;XynB;E-BXSEBP)		Bacillus pumilus IPO	CAA29235.1	P07129	5ZQJ[A,B] 1.73 5ZQS[A,B] β-D-Xylp β-D-Xylp-(1-4)-β-D-Xylp 1.78 5ZQX[A,B,C,D] β-D-Xylp-(1-4)-β-D-Xylp 2.00
β-xylosidase (XynB)		Bacillus pumilus PLS	AAC97375.1	A0A4V8GZZ0 Q9Z477	6IFE[A,B] 1.80
β-1,4-xylosidase (BsX;XynB;YnaK;BSU17580)		Bacillus subtilis subsp. subtilis str. 168	AAB41091.1 AIY93062.1 AQR81741.1 AQR85955.1 CAB13642.1 CAB13642.2 NP_389640.1	A0A6M3ZBF4 P94489	1YIF[A,B,C,D] 1.80
α-L-arabinofuranosidase (BACEGG_01304)		Bacteroides eggerthii DSM 20697	ZP_03458529.1	E5WZQ7	6MLY[A,B,C,D] 2.70
I1224_01990		Bacteroides intestinalis APC919/174 substr. 8W	UCB40241.1		7ERL[A,B] 1.89
bifunctional xyloglucan α-1,2-L-arabinofuranoside and β-1,2-xylosidase 43A (Xynb_4; BoGH43A; BACOVA_02654; Bovatus_03073)		Bacteroides ovatus ATCC 8483	ALJ47681.1	A7LXT8	5JOW[A,B] 1.60 5JOX[A,B] <carb_like_EDG> 1.80 5JOY[A,B] α-L-Araf1N-(1-1)-<non_carb> β-L-Araf1N-(1-1)-<non_carb> 1.90
α-L-arabinofuranoside (Xynb_5;BoGH43B;BACOVA_02656;Bovatus_03074)		Bacteroides ovatus ATCC 8483	ALJ47682.1	A7LXU0	5JOZ[A,B] 2.28
β-xylosidase (XynD;CAC3452)		Clostridium acetobutylicum ATCC 824	AAK81382.1 NP_350042.1		1Y7B[A,B,C,D] 1.60 1YI7[A,B,C,D] 1.90
β-xylosidase (Xyl43)		Enterobacter sp. enrichment culture clone nf1B6	AFZ78871.1	V5J3M5	7K1R[A,B,C,D] 2.40 8UWS[A,B,C,D] 2.65
β-xylosidase (XynB3;HUS_CDS105)		Geobacillus stearothermophilus T-6 NCIMB 40222	AAT98625.1 ABI49959.1	Q09LX0	2EXH[A,B,C,D] 1.88 2EXI[A,B,C,D] 2.15 2EXJ[A,B,C,D] β-D-Xylp-(1-4)-β-D-Xylp 2.20 2EXK[A,B,C,D] β-D-Xylp-(1-4)-β-D-Xylp 2.20
β-xylosidase (Xyl;GbtXyl43A) (Xyl43A)		Geobacillus thermoleovorans IT-08	ABC75004.1	Q2I2N4	5Z5D[A] 1.70 5Z5F[A] β-L-Araf 2.10 5Z5H[A] α-D-Xylp 1.90 5Z5I[A] α-D-Xylp β-D-Xylp β-L-Araf 1.70
β-xylosidase (XynB;XylBH43;BH3683)		Halalkalibacterium halodurans C-125	BAB07402.1 NP_244550.1	Q9K6P5	1YRZ[A,B] 2.00
β-xylosidase / α-L-arabinofuranosidase (Xsa; Sxa; SXA; SrXyl43)		Selenomonas ruminantium GA192	AAB97967.1	O52575	3C2U[A,B,C,D] 1.30
Eukaryota
Protein Name	EC#	Organism	GenBank	Uniprot	PDB/3D Carbohydrate Ligands Resolution (Å)
double substituted xylan α-1,3-L-arabinofuranosidase (α-araF; AXHd3; HiAXHd3; Abf II; HiABF43_36a; ABF-d3)		Humicola insolens DSM 18000	CAL81199.1		3ZXJ[A,B] 1.85 3ZXK[A,B] β-D-Xylp-(1-4)[α-L-Araf-(1-2)]-β-D-Xylp-(1-4)-β-D-Xylp 1.44 3ZXL[A,B] 1.87
unclassified
Protein Name	EC#	Organism	GenBank	Uniprot	PDB/3D Carbohydrate Ligands Resolution (Å)
α-L-arabinofuranosidase (CapGH43_12)		metagenome	UMW87593.1		7JVH[A,B,C,D,E,F] 2.48
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