Activities in Family	β-xylosidase (EC 3.2.1.37); α-L-arabinofuranosidase (EC 3.2.1.55); xylanase (EC 3.2.1.8); 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 3.2.1.72); [inverting] exo-α-1,5-L-arabinanase (EC 3.2.1.-); [inverting] endo-α-1,5-L-arabinanase (EC 3.2.1.99); exo-β-1,3-galactanase (EC 3.2.1.145); β-D-galactofuranosidase (EC 3.2.1.146)
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. 82:1686-1692 (PMID: 26729713).
External resources	CAZypedia;
Commercial Enzyme Provider(s)	MEGAZYME; NZYTech; PROZOMIX;
Statistics	GenBank accession (28359); Uniprot accession (194); PDB accession (111); 3D entries (50); cryst (1)

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Bacteria
Protein Name	EC#	Reference	Organism	GenBank	Uniprot	PDB/3D	Subf
[arabinogalactan] exo-β-1,3-galactanase (Ct1,3Gal43A;CtGH43;Cthe_0661) (1,3Gal43A)	3.2.1.145	pubmed	Acetivibrio thermocellus ATCC 27405	ABN51896.1	A3DD67	3VSF[A,B,C,D,E,F] 3VSZ[A,B,C,D,E,F] 3VT0[A,B,C,D,E,F] 3VT1[A,B,C,D,E,F] 3VT2[A,B,C,D,E,F]	24
α-L-arabinofuranosidase (Ct43Araf;CtAbf43A;CtGh43;Cthe_1271) (Abf43A)	3.2.1.55	pubmed	Acetivibrio thermocellus ATCC 27405	ABN52503.1	A3DEX4	5A8C[A] 5A8D[A]	16
β-xylosidase (AmX;Amet_3317)	3.2.1.37	pubmed	Alkaliphilus metalliredigens QYMF	ABR49445.1	A6TTC7		11
β-D-galactofuranosidase (weak activity) (AMED_5364)	3.2.1.146	pubmed	Amycolatopsis mediterranei U32	ADJ47124.1	A0A0H3DBX5 D8I4F0		37
endo-α-1,5-L-arabinanase (BlAbn1; BLi03029; BL00353)	3.2.1.99	pubmed	Bacillus licheniformis DSM 13 = ATCC 14580	AAU41895.1 AAU24536.1	Q65GB9	6B7K[A,B,C,D]	5
endo-α-1,5-L-arabinanase (AbnA;BLABNase;BLi01295;BL02653)	3.2.1.99	pubmed	Bacillus licheniformis DSM 13 = ATCC 14580	AAU40201.1 AAU22854.1 AAU22854.2	Q65L63		5
arabinoxylan α-arabinofuranosidase / AXH-m23 (XynD) (Arf43A=Axh43A)	3.2.1.55	pubmed	Bacillus licheniformis SVD1	BAL45491.1	H1ACZ8		16
β-xylosidase (BpX;XynB;E-BXSEBP)	3.2.1.37	pubmed	Bacillus pumilus IPO	CAA29235.1	P07129	5ZQJ[A,B] 5ZQS[A,B] 5ZQX[A,B,C,D]	11
β-xylosidase (XynB)	3.2.1.37	pubmed	Bacillus pumilus PLS	AAC97375.1	A0A4V8GZZ0 Q9Z477	6IFE[A,B]	11
arabinoxylan arabinofuranohydrolase (AXH) (Axh43A)	3.2.1.55	pubmed	Bacillus sp. BP-7	AKF02745.1	A0A0F6VYJ7		16
β-xylosidase (XylB)	3.2.1.37	pubmed	Bacillus sp. KK-1	AAC27699.1	O52729		11
endo-α-1,5-L-arabinanase	3.2.1.99	pubmed	Bacillus subtilis IFO3134	BAA20372.1	O07078		5
endo-α-1,5-L-arabinanase (Abn2;YxiA;J3A;BSU39330) (Arb43B)	3.2.1.99	pubmed	Bacillus subtilis subsp. subtilis str. 168	CAB15969.2 ACB06752.1 AIY95249.1 AQR83975.1 AQR88190.1 CAB15969.1 NP_391812.1	A0A6M4JQW9 B3FRL6 P42293	2X8F[A,B] 2X8S[A,B] 2X8T[A,B] 4COT[A]	4
endo-α-1,5-L-arabinanase (AbnA;BSU28810) (Arb43A)	3.2.1.99	pubmed	Bacillus subtilis subsp. subtilis str. 168	CAA99586.1 AAV87172.1 AIY94210.1 AQR82908.1 AQR87123.1 CAB14841.1 CAB14841.2 NP_390759.1	A0A6M3ZJV7 P94522	1UV4[A]	5
β-1,4-xylosidase (BsX;XynB;YnaK;BSU17580)	3.2.1.37	pubmed	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]	11
arabinoxylan α-L-1,3-arabinofuranohydrolase (XynD;BsAXH-m23;BSU18160)	3.2.1.55	pubmed	Bacillus subtilis subsp. subtilis str. 168	CAB13699.1 AIY93126.1 AQR81807.1 AQR86021.1 NP_389698.1	A0A6M4JGV3 Q45071 Q798P3	3C7E[A] 3C7F[A] 3C7G[A] 3C7H[A] 3C7O[A]	16
β-D-galactofuranosidase (BcellWH2_02640;BACWH2_2462;Arba_1)	3.2.1.146	pubmed	Bacteroides cellulosilyticus WH2	ALJ59879.1 WP_007211145.1	A0A0P0FQL6 A0A139LLD8 E2NBW3		3
α-L-arabinofuranosidase (BcellWH2_04906; BACWH2_4625)	3.2.1.55	pubmed	Bacteroides cellulosilyticus WH2	ALJ62115.1 WP_029328006.1	A0A0N7IG62 A0A139L9H8		18
α-L-arabinofuranosidase (weak activity) (BcellWH2_03560; BACWH2_3333)	3.2.1.55	pubmed	Bacteroides cellulosilyticus WH2	ALJ60783.1 WP_029427512.1	A0A0P0GRY3		18
α-L-arabinofuranosidase (BACEGG_01304)	3.2.1.55	pubmed	Bacteroides eggerthii DSM 20697	ZP_03458529.1		6MLY[A,B,C,D]	10
β-xylosidase (BiXyl43A;BACINT_04203) (Xyl43A)	3.2.1.37	pubmed	Bacteroides intestinalis DSM 17393	EDV05060.1	B3CES2		1
bifunctional endo-β-1,4-xylanase / α-L-arabinofuranosidase (BiXyn10B/BiAra43A;BACINT_04202) (Xyn10B/Ara43A)	3.2.1.55	pubmed	Bacteroides intestinalis DSM 17393	EDV05059.1	B3CES1		12
endo-β-1,4-xylanase (BACINT_01041)	3.2.1.8	pubmed	Bacteroides intestinalis DSM 17393	ZP_03013482.1			17
α-L-arabinofuranosidase (BACINT_01043)	3.2.1.55	pubmed	Bacteroides intestinalis DSM 17393	ZP_03013484.1			2
endo-β-1,4-xylanase (BACINT_01035)	3.2.1.8	pubmed	Bacteroides intestinalis DSM 17393	ZP_03013476.1			7
α-L-arabinofuranosidase (BACOVA_03421;Bovatus_03717)	3.2.1.55	pubmed	Bacteroides ovatus ATCC 8483	ALJ48322.1 EDO10788.1	A7LZZ4		12
α-L-arabinofuranosidase (BACOVA_03425;Bovatus_03721)	3.2.1.55	pubmed	Bacteroides ovatus ATCC 8483	ALJ48326.1 EDO10792.1	A7LZZ8		12
double substituted xylan α-1,3-L-arabinofuranosidase (Bovatus_03715; Xynb_6; BACOVA_03417)	3.2.1.55	pubmed	Bacteroides ovatus ATCC 8483	ALJ48320.1			10
α-L-arabinofuranoside (Xynb_4;BoGH43A;BACOVA_02654;Bovatus_03073)	3.2.1.55	pubmed	Bacteroides ovatus ATCC 8483	ALJ47681.1	A7LXT8	5JOW[A,B] 5JOX[A,B] 5JOY[A,B]	12
β-D-galactofuranosidase (Xsa_3;Bovatus_03644; revised model of BACOVA_03336 ZP_02066340.1)	3.2.1.146	pubmed	Bacteroides ovatus ATCC 8483	ALJ48250.1			34
α-L-arabinofuranoside (Xynb_5;BoGH43B;BACOVA_02656;Bovatus_03074)	3.2.1.55	pubmed	Bacteroides ovatus ATCC 8483	ALJ47682.1	A7LXU0	5JOZ[A,B]	12
α-L-arabinofuranosidase (BACOVA_03417)	3.2.1.55		Bacteroides ovatus ATCC 8483	EDO10784.1			10
β-xylosidase / α-L-arabinofuranosidase (Xsa;XSA)	3.2.1.37 3.2.1.55	pubmed pubmed	Bacteroides ovatus V975	AAB08024.1 ACA34973.1	B2KZK6 P49943		1
β-D-galactofuranosidase (HMPREF1071_01763)	3.2.1.146	pubmed	Bacteroides salyersiae CL02T12C01	EIY66405.1	I8YTH8		8
endo-α-1,5-L-arabinanase (BT0360;BT_0360) (branched arabinan specific)	3.2.1.99	pubmed	Bacteroides thetaiotaomicron VPI-5482	AAO75467.1 NP_809273.1	Q8AAV4		4
endo-α-1,5-L-arabinanase (BT0367;BT_0367) (linear arabinan-specific)	3.2.1.99	pubmed	Bacteroides thetaiotaomicron VPI-5482	AAO75474.1 NP_809280.1	Q8AAU7		4
α-L-arabinofuranosidase (BT3675;BT_3675)	3.2.1.55	pubmed	Bacteroides thetaiotaomicron VPI-5482	AAO78780.1 NP_812586.1	Q8A1I6	3QZ4[A,B]	34
α-L-arabinofuranosidase (Bt3655;BT_3655) (single substitution specific)	3.2.1.55	pubmed	Bacteroides thetaiotaomicron VPI-5482	AAO78760.1 NP_812566.1	Q8A1K6		19
exo-β-1,3-galactanase (BT0265;BT_0265)	3.2.1.145	pubmed	Bacteroides thetaiotaomicron VPI-5482	AAO75372.1 NP_809178.1	Q8AB46	6EUF[A,B,C,D] 6EUJ[A,B,C,D]	24
α-L-arabinofuranosidase (cleaves L-Araf-α-1,3-D-GalpA; BT1021; BT_1021)	3.2.1.55	pubmed	Bacteroides thetaiotaomicron VPI-5482	AAO76128.1 NP_809934.1	Q8A8Z6		18
α-L-arabinofuranosidase (Bt2852;BT_2852) (single substitution specific)	3.2.1.55	pubmed	Bacteroides thetaiotaomicron VPI-5482	AAO77958.1 NP_811764.1	Q8A3V2		10
α-1,2-L-arabinofuranosidase (BT0369;BT_0369)	3.2.1.-	pubmed	Bacteroides thetaiotaomicron VPI-5482	AAO75476.1 NP_809282.1	Q8AAU5		29
(grape RGII active) α-L-arabinofuranosidase (BT3662;BT_3662)	3.2.1.55	pubmed	Bacteroides thetaiotaomicron VPI-5482	AAO78767.1 NP_812573.1	Q8A1J9	5MSX[A,B,C]	34
α-L-arabinofuranosidase (Bt3094;BT_3094)	3.2.1.55	pubmed	Bacteroides thetaiotaomicron VPI-5482	AAO78200.1 NP_812006.1	Q8A361
β-D-galactofuranosidase (Belba_3293)	3.2.1.146	pubmed	Belliella baltica DSM 15883	AFL85801.1	I3Z983		31
double substituted xylan α-1,3-L-specific arabinofuranosidase d3 (AXHd3;AXH-d3;BaAXH-d3;BAD_0301;E-AFAM2)	3.2.1.55	pubmed	Bifidobacterium adolescentis ATCC 15703	AAO67499.1 BAF39082.1	A1A049 Q5JB56		10
α-L-arabinofuranosidase (AXH-m;AbfA;BAD_0423)	3.2.1.55	pubmed	Bifidobacterium adolescentis ATCC 15703	BAF39204.1	A1A0H1		12
β-xylosidase C (XylC;XynB;BAD_0428)	3.2.1.37	pubmed	Bifidobacterium adolescentis ATCC 15703	BAF39209.1	A1A0H6		11
β-xylosidase (BAD_1527)	3.2.1.37	pubmed	Bifidobacterium adolescentis ATCC 15703	BAF40308.1	A1A3M5		22
β-xylosidase (BIF_00092)	3.2.1.37	pubmed	Bifidobacterium animalis subsp. lactis BB-12	ADC85541.1	D3R467		11
α-1,3-L-arabinofuranosidase (HypAA; BLLJ_0213)	3.2.1.-	doi	Bifidobacterium longum subsp. longum JCM 1217	BAJ65883.1			29
exo-β-1,3-galactanase (BLLJ_1840)	3.2.1.145	pubmed	Bifidobacterium longum subsp. longum JCM 1217	BAJ67504.1			24
bimodular α-1,3- and α-1,4-arabinofuranosidase (BlArafE; BLLJ_1850)	3.2.1.-	pubmed	Bifidobacterium longum subsp. longum JCM 1217	BAJ67514.1			22
bimodular α-1,5- and α-1,2-arabinofuranosidase (BLLJ_1851; BlArafD)	3.2.1.99	pubmed	Bifidobacterium longum subsp. longum JCM 1217	BAJ67515.1			22
bimodular α-1,5- and α-1,2-arabinofuranosidase (BLLJ_1851; BlArafD)	3.2.1.-	pubmed	Bifidobacterium longum subsp. longum JCM 1217	BAJ67515.1
α-L-arabinofuranosidase (BlArafC;BLLJ_1852)	3.2.1.55	pubmed	Bifidobacterium longum subsp. longum JCM 1217	BAJ67516.1			27
α-L-arabinofuranosidase (BlArafB;BLLJ_1853)	3.2.1.55	pubmed	Bifidobacterium longum subsp. longum JCM 1217	BAJ67517.1			22
α-1,3-L-arabinofuranosidase (BlArafA; BLLJ_1854)	3.2.1.-	pubmed	Bifidobacterium longum subsp. longum JCM 1217	BAJ67518.1			22
α-L-arabinofuranosidase / β-xylosidase (XylB)	3.2.1.37 3.2.1.55	pubmed pubmed	Butyrivibrio fibrisolvens GS 113	AAA63610.1	P45982		12
α-L-arabinofuranosidase (Xsa43E;bpr_I2319)	3.2.1.37 3.2.1.55	pubmed pubmed	Butyrivibrio proteoclasticus B316	ADL35052.1	E0RYY0	4NOV[A]	29
α-L-arabinofuranosidase (Calow_2099)	3.2.1.55	pubmed	Caldicellulosiruptor owensensis OL	ADQ05609.1	E4Q6K2		17
endo-α-1,5-L-arabinanase (Csac_1560)	3.2.1.99	pubmed	Caldicellulosiruptor saccharolyticus DSM 8903	ABP67152.1	A4XJR7		4
bifunctional α-L-arabinofuranosidase (XynF; Csac_2411)	3.2.1.55	pubmed pubmed	Caldicellulosiruptor saccharolyticus DSM 8903	ABP67988.1 WP_011917910.1	A4XM53		16
bifunctional α-L-arabinofuranosidase (XynF; Csac_2411)	3.2.1.55	pubmed pubmed	Caldicellulosiruptor saccharolyticus DSM 8903	ABP67988.1 WP_011917910.1	A4XM53		10
bifunctional β-1,4-xylanase / α-L-arabinosidase (XynA)	3.2.1.55	pubmed	Caldicellulosiruptor sp. Tok7B.1	AAD30363.1	Q9X3P5		16
bifunctional β-xylosidase I / α-L-arabinofuranosidase (XynB1;CCNA_01040)	3.2.1.37 3.2.1.55	pubmed pubmed	Caulobacter vibrioides NA1000	ACL94505.1	A0A0H3C5C2 B8H2V1		11
endo-β-1,4-xylanase (CGSCsYakCAS_10615) (fragment) (Xyn43A)	3.2.1.8	pubmed	Cellulosilyticum ruminicola CGMCC 1.5065	ACZ98594.1	D2KFJ2		16
endo-α-1,5-L-arabinanase / exo-α-1,5-L-arabinanase 43A (ArbA;CJA_0805) (Arb43A)	3.2.1.99 3.2.1.-	pubmed pubmed	Cellvibrio japonicus Ueda107	ACE84667.1 CAA71485.1	B3PKP8 P95470	1GYD[B] 1GYE[B] 1GYH[A,B,C,D,E,F]	5
β-xylosidase 43A (CJA_3070) (Xyl43A=Gly43G)	3.2.1.37	pubmed	Cellvibrio japonicus Ueda107	ACE82692.1	B3PDB2		1
exo-α-1,5-L-arabinofuranosidase 43K (CJA_3012) (Abf43K)	3.2.1.-	pubmed	Cellvibrio japonicus Ueda107	ACE82749.1	B3PD54		26
α-1,2-L-arabinofuranosidase 43A (CJA_3018) (arabinan-specific) (Abf43A=Gly43N)	3.2.1.-	pubmed	Cellvibrio japonicus Ueda107	ACE83886.1	B3PD60	3QED[A,B,C,D] 3QEE[A,B] 3QEF[A,B]	29
exo-α-1,5-L-arabinofuranosidase 43L (CJA_0806) (Abf43L)	3.2.1.-	pubmed	Cellvibrio japonicus Ueda107	ACE84379.1	B3PKP9		26
α-L-arabinofuranosidase (Cpin_4501)	3.2.1.55	pubmed	Chitinophaga pinensis DSM 2588	ACU61943.1	C7PJ75		2
β-xylosidase (Xyl43)	3.2.1.37	pubmed	Enterobacter sp. enrichment culture clone nf1B6	AFZ78871.1	V5J3M5	B[nd] C[nd] D[nd] 7K1R[A]	11
arabinoxylan α-L-arabinofuranosidase (Axh1;Fisuc_1769;FSU_2269)	3.2.1.55	pubmed	Fibrobacter succinogenes subsp. succinogenes S85	ACX75362.1 ADL24843.1	C9RS26		10
Fisuc_1994 / FSU_2517	3.2.1.99	pubmed	Fibrobacter succinogenes subsp. succinogenes S85	ACX75582.1 ADL26080.1	C9RIW1		37
[oligo-ulvan] β-xylosidase (BN863_22160)	3.2.1.37	pubmed	Formosa agariphila KMM 3901	CDF79928.1	T2KN85		10
β-xylosidase (XynB3;HUS_CDS105)	3.2.1.37	pubmed	Geobacillus stearothermophilus T-6 NCIMB 40222	AAT98625.1 ABI49959.1	Q09LX0	2EXH[A,B,C,D] 2EXI[A,B,C,D] 2EXJ[A,B,C,D] 2EXK[A,B,C,D]	11
α-1,5-L-arabinanase (AbnB;HUS_CDS25) (intracellular)	3.2.1.99	pubmed	Geobacillus stearothermophilus T-6 NCIMB 40222	ACE73676.1	B3EYM8	3CU9[A] 3D5Y[A] 3D5Z[A] 3D60[A] 3D61[A] 6F1G[A]	5
endo-α-1,5-L-arabinanase (AbnA) (extracellular)	3.2.1.99	pubmed	Geobacillus stearothermophilus T-6 NCIMB 40222	ACE73680.1	B3EYN2	5HO0[A] 5HO2[A] 5HO9[A,B] 5HOF[A] 5HP6[A]	4
endo-α-1,5-L-arabinanase (Abn-ts)	3.2.1.99	pubmed	Geobacillus thermodenitrificans TS-3	BAB64339.1	Q93HT9	1WL7[A] 6A8H[A] 6A8I[A,B]	5
β-xylosidase (Xyl;GbtXyl43A) (Xyl43A)	3.2.1.37	pubmed	Geobacillus thermoleovorans IT-08	ABC75004.1	Q2I2N4	5Z5D[A] 5Z5F[A] 5Z5H[A] 5Z5I[A]	12
β-xylosidase / exo-xylanase (GbtXyl43B) (Xyl43B)	3.2.1.37	pubmed	Geobacillus thermoleovorans IT-08	ABD48561.1	Q27R94		27
β-xylosidase (XynB;XylBH43;BH3683)	3.2.1.37	doi	Alkalihalobacillus halodurans C-125	BAB07402.1 NP_244550.1	Q9K6P5	1YRZ[A,B]	11
α-L-arabinofuranosidase (HoAraf43;Hore_20580)	3.2.1.55	pubmed	Halothermothrix orenii H 168	ACL70803.1	B8CZV1	4QQS[A,B]	33
α-L-arabinofuranosidase / xylan 1,4-β-xylosidase (HHT355_2105; ArfC)	3.2.1.55	pubmed	Herbinix hemicellulosilytica	CRZ35303.1			12
xylan 1,4-β-xylosidase (XylA; HHT355_0966)	3.2.1.37	pubmed	Herbinix hemicellulosilytica	CRZ34169.1			1
β-D-galactofuranosidase (weak activity) (SAMN04515690_3677)	3.2.1.146	pubmed	Leifsonia sp. 197AMF	SDH69004.1			32
β-xylosidase (XynB1)	3.2.1.37	pubmed	Levilactobacillus brevis ATCC 14869 = DSM 20054	AGT14429.1	T1SF68		11
α-1,5-L-arabinofuranosidase (Abf3)	3.2.1.-	pubmed	Levilactobacillus brevis ATCC 14869 = DSM 20054	AGT14430.1	U2QSL8		26
β-xylosidase 2 (XynB2)	3.2.1.37	pubmed	Levilactobacillus brevis ATCC 14869 = DSM 20054	AGT14431.1	U2QPM2		11
β-xylosidase (LbX;XynB2;LVIS_2285)	3.2.1.37	pubmed	Levilactobacillus brevis ATCC 367	ABJ65333.1	Q03N89		11
α-L-arabinofuranosidase II (Araf43;LbAraf43;N624_1993)	3.2.1.-	pubmed	Levilactobacillus brevis DSM 1269 / TMW 1.313	APU52333.1 KIO95879.1		5M8B[A,B]	26
α-L-arabinofuranoside (weak activity) (A3224_13575)	3.2.1.55	pubmed	Microbulbifer thermotolerans DAU221	AMX03466.1	A0A143HPP2		9
α-L-arabinofuranosidase (GA0070618_4635)	3.2.1.55	pubmed	Micromonospora echinospora DSM 43816	SCF26596.1	A0A1C4Z108		20
β-D-galactofuranosidase (GA0074704_5727)	3.2.1.146	pubmed	Micromonospora siamensis DSM 45097	SCG78792.1	A0A1C5K7P2		30
α-L-arabinofuranosidase (SAMN05216490_0716)	3.2.1.55	pubmed	Mucilaginibacter mallensis MP1X4	SDS19757.1	A0A1H1Q8Z9		2
α-L-arabinofuranoside (weak activity) (B160DRAFT_01699)	3.2.1.55	pubmed	Niabella aurantiaca	WP_018628786.1			18
α-L-arabinofuranoside (weak activity) (OPIT5_12740)	3.2.1.55	pubmed	Opitutaceae bacterium TAV5	AHF90946.1	W0J2F7		18
β-D-galactofuranosidase (weak activity) (Oter_3903)	3.2.1.146	pubmed	Opitutus terrae PB90-1	ACB77177.1	B1ZZA2		32
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