Glycoside Hydrolase Family 43

Activities in Familyβ-xylosidase (EC; α-L-arabinofuranosidase (EC; arabinanase (EC; xylanase (EC; galactan 1,3-β-galactosidase (EC; 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.-)
Mechanism Inverting
3D Structure Status5-fold β-propeller
Catalytic Nucleophile/BaseAsp
Catalytic Proton DonorGlu
NoteMany members have been assigned to subfamilies as described by Mewis et al. (2016) Appl. Environm. Microbiol. in press (PMID: 26729713).
External resourcesCAZypedia;
Commercial Enzyme Provider(s)MEGAZYME; NZYTech; PROZOMIX;
Statistics GenBank accession (9070); Uniprot accession (1416); PDB accession (81); 3D entries (39); cryst (3)
All (8498) Archaea (17) Bacteria (8077) Eukaryota (372) Viruses (5) unclassified (27) Structure (39 - 3 cryst) Characterized (151)
| 1 | 2 |
Protein Name EC#OrganismGenBank UniprotPDB/3D Subf
 α-L-arabinofuranosidase / β-xylosidase (deAX)
uncultured bacterium ACF39706.1 B8QP77   12
 exo-α-1,5-L-arabinanase (Arn3;ARN3) 3.2.1.- uncultured bacterium ADB43999.1 D2XML8 4KCB[A,B] 5
 endo-α-1,5-L-arabinanase (Arn2) uncultured bacterium ADB43998.1 D2XML7   4
 CW-Xyn1 3.2.1.- uncultured bacterium AFS18548.1     11
 α-L-arabinofuranosidase / β-xylosidase (deAFc)
uncultured bacterium ABB92159.1 A0S5D8   12
 β-xylobiosidase / α-L-arabinofuranosidase (r_09-02)
uncultured bacterium r_09 AFN57709.1     35
 endo-β-1,4-xylanase (UX66;Orf66) uncultured bacterium URE4 ACM91046.1 C0K016   29
 endo-β-1,4-xylanase (UX66;Orf66) uncultured bacterium URE4 ACM91046.1 C0K016   29
 β-1,4-xylosidase / α-L-arabinofuranoside (RuXyn1)
uncultured rumen bacterium ADO20354.1 E3TBJ3   1
 β-xylosidase / α-L-arabinofuranosidase (RUM630-BX) uncultured rumen bacterium AFE48532.1     1
 endo-α-1,5-L-arabinanase (Arn2;ARN2) (partial) uncultured rumen bacterium     4KCA[A]
 β-1,3-xylosidase (XloA) 3.2.1.- Vibrio sp. XY-214 BAF98235.1 A9ZND1   11
 α-L-arabinofuranosidase (Araf43;WAraf43) 3.2.1.- Weissella sp. 142 APU52332.1   5M8E[A,B] 26
 β-xylosidase (Xyn43;WXyn43) Weissella sp. 92 ALB06585.1     11
Protein Name EC#OrganismGenBank UniprotPDB/3D Subf
 endo-α-1,5-L-arabinanase (Ara1) Aspergillus aculeatus CBS 101.43 AAG27441.1 Q9HFS9   6
 endo-α-1,5-L-arabinosidase (AN8007.2) Aspergillus nidulans FGSC A4 EAA58810.1
 endo-α-1,5-L-arabinosidase (AN6352.2) Aspergillus nidulans FGSC A4 EAA58736.1
 An09g01190 (AbnA) Aspergillus niger CBS 513.88 CAK49041.1 A2QT85   6
 arabinan endo-α-1,5-L-arabinosidase A (AbnA) Aspergillus niger CBS120.49 / N400 AAA32682.1
P42256   6
 endo-α-1,5-L-arabinanase (AbnA) Aspergillus niveus PR-2 AEV23010.1     6
 β-xylosidase (XylB;AO090005000698) Aspergillus oryzae RIB40 BAE55732.1 Q2URT3   1
 β-xylosidase (AtL) Aspergillus terreus Li-20 AFD63137.1     1
 β-xylosidase (Xyp1) Bipolaris zeicola AAC67554.1 O93912   1
 α-L-arabinofuranosidase (Ara;CsAra) Chaetomium sp. CQ31 AFU88757.1     26
 endo-α-1,5-L-arabinanase (Abn1) Chrysosporium lucknowense C1 ADZ98858.1     6
 α-L-arabinofuranosidase (Abn4) 3.2.1.- Chrysosporium lucknowense C1 ADZ98860.1     26
 arabinoxylan hydrolase / double substituted xylan α-1,3-L-arabinofuranosidase (Abn7;AXHd) Chrysosporium lucknowense C1 ADZ98862.1     36
 exo-β-1,3-galactanase (Fo/1,3Gal) Fusarium oxysporum 12S BAG80558.1 B6F260   24
 double substituted xylan α-1,3-L-arabinofuranosidase (α-araF;AXHd3;;Abf II) Humicola insolens DSM 18000 CAL81199.1   3ZXJ[A,B]
 α-L-arabinofuranosidase (Abf43;HiAbf43) Humicola insolens Y1 AIM56896.1     26
 β-xylosidase / α-L-arabinofuranosidase (Xyl43A) Humicola insolens Y1 AHC72382.1     1
 β-xylosidase / α-L-arabinofuranosidase (Xyl43B)
Humicola insolens Y1 AHC72383.1     11
 exo-β-1,3-galactanase (Il3Gal;Il1,3GAL) Irpex lacteus NBRC 5367 BAH29957.1 B9ZZS1   24
 α-L-arabinofuranosidase B (AbfB;MoAbfB;MG06843;MGG_06843( Magnaporthe oryzae 70-15 XP_370346.1 G4MMH2   26
 β-1,4-xylosidase (PtXyl43) (Xyl43) Paecilomyces sp. J18 / Paecilomyces thermophila J18 ADM33794.1     1
 arabinan endo-α-1,5-L-arabinosidase (AbnC;Abnc) Penicillium chrysogenum 31B BAD15018.1 Q75WE6   6
 endo-α-1,5-L-arabinanase (AbnS1) Penicillium chrysogenum 31B BAD89094.2
Q5H7M8 cryst 6
 single-substituted arabinan-specific α-L-arabinofuranosidase (PcAbf43A;Pc06g00650) (Abf43A) Penicillium chrysogenum 31B BAM73651.1     26
 α-L-arabinofuranosidase (PcAbf43B) (Abf43B) Penicillium chrysogenum 31B BAQ35744.1     21
 β-xylosidase S2 Penicillium herquei IFO 4674 BAC75546.1 Q870E8   1
 exo-β-1,3-galactanase (Pc1,3Gal43A) (1,3Gal43A) Phanerochaete chrysosporium BAD98241.1 Q50KB2 cryst 24
 endo-α-1,5-L-arabinanase (Ara;PcARA) Phanerochaete chrysosporium BKM-F-1767 AFN42888.1     5
 β-xylosidase / α-L-arabinofuranosidase (Xyl;PcXyl) Phanerochaete chrysosporium BKM-F-1767 AFW16059.1     14
 endo-1,5-α-L-arabinanase (RmArase) Rhizomucor miehei CAU432 AHF50152.1     5
 α-L-arabinofuranosidase 3 / β-xylosidase (Abf3)
Talaromyces purpureogenus MYA-38 ACP50519.2
C3W4Y2   29
 β-1,4-xylosidase (Xyl43;TlXyl43;NOKS4_002883-RA) Thermomyces lanuginosus CAU44 ADW66247.1     1
Protein Name EC#OrganismGenBank UniprotPDB/3D Subf
 arabinanase 43A (G12-10;GH43b(G12);BN138_172) (Abn43A) termite gut metagenome CCO20984.1     4
 exo-α-L-1,5-arabinanase 43B (G12-19;GH43a(G12);BN138_181) (Abn43B) 3.2.1.- termite gut metagenome CCO20993.1     4
 α-L-arabinofuranosidase 51B-43C (G12-20;GH51-GH43(G12);BN138_182) (Abf51B-Abf43C) termite gut metagenome CCO20994.1     29
 multimodular xylanase (fragment) 3.2.1.- uncultured organism ADD61461.1 D9ZDQ7   16
 β-xylosidase (RS223-BX) uncultured organism AFP23142.1   4MLG[A,B,C,D,E,F,G,H,I,J,K,L] 1

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