Glycoside Hydrolase Family 43

Activities in Familyβ-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.-)
Mechanism Inverting
ClanGH-F
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 |
Bacteria
Protein Name EC#OrganismGenBank UniprotPDB/3D Subf
 α-L-arabinofuranosidase / β-xylosidase (deAX) 3.2.1.37
3.2.1.55
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) 3.2.1.99 uncultured bacterium ADB43998.1 D2XML7   4
 CW-Xyn1 3.2.1.- uncultured bacterium AFS18548.1     11
 α-L-arabinofuranosidase / β-xylosidase (deAFc) 3.2.1.37
3.2.1.55
uncultured bacterium ABB92159.1 A0S5D8   12
 β-xylobiosidase / α-L-arabinofuranosidase (r_09-02) 3.2.1.37
3.2.1.55
uncultured bacterium r_09 AFN57709.1     35
 endo-β-1,4-xylanase (UX66;Orf66) 3.2.1.8 uncultured bacterium URE4 ACM91046.1 C0K016   29
 endo-β-1,4-xylanase (UX66;Orf66) 3.2.1.8 uncultured bacterium URE4 ACM91046.1 C0K016   29
 β-1,4-xylosidase / α-L-arabinofuranoside (RuXyn1) 3.2.1.37
3.2.1.55
uncultured rumen bacterium ADO20354.1 E3TBJ3   1
 β-xylosidase / α-L-arabinofuranosidase (RUM630-BX) 3.2.1.37 uncultured rumen bacterium AFE48532.1     1
 endo-α-1,5-L-arabinanase (Arn2;ARN2) (partial) 3.2.1.99 uncultured rumen bacterium     4KCA[A]
4KCA[B]
4
 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) 3.2.1.37 Weissella sp. 92 ALB06585.1     11
Eukaryota
Protein Name EC#OrganismGenBank UniprotPDB/3D Subf
 endo-α-1,5-L-arabinanase (Ara1) 3.2.1.99 Aspergillus aculeatus CBS 101.43 AAG27441.1 Q9HFS9   6
 endo-α-1,5-L-arabinosidase (AN8007.2) 3.2.1.99 Aspergillus nidulans FGSC A4 EAA58810.1
ABF50890.1
C8V5S3
Q5AUM3
  6
 endo-α-1,5-L-arabinosidase (AN6352.2) 3.2.1.99 Aspergillus nidulans FGSC A4 EAA58736.1
ABF50876.1
C8V0Y7
Q5AZC8
  6
 An09g01190 (AbnA) 3.2.1.99 Aspergillus niger CBS 513.88 CAK49041.1 A2QT85   6
 arabinan endo-α-1,5-L-arabinosidase A (AbnA) 3.2.1.99 Aspergillus niger CBS120.49 / N400 AAA32682.1
AAE37583.1
P42256   6
 endo-α-1,5-L-arabinanase (AbnA) 3.2.1.99 Aspergillus niveus PR-2 AEV23010.1     6
 β-xylosidase (XylB;AO090005000698) 3.2.1.37 Aspergillus oryzae RIB40 BAE55732.1 Q2URT3   1
 β-xylosidase (AtL) 3.2.1.37 Aspergillus terreus Li-20 AFD63137.1     1
 β-xylosidase (Xyp1) 3.2.1.37 Bipolaris zeicola AAC67554.1 O93912   1
 α-L-arabinofuranosidase (Ara;CsAra) 3.2.1.55 Chaetomium sp. CQ31 AFU88757.1     26
 endo-α-1,5-L-arabinanase (Abn1) 3.2.1.99 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) 3.2.1.55 Chrysosporium lucknowense C1 ADZ98862.1     36
 exo-β-1,3-galactanase (Fo/1,3Gal) 3.2.1.145 Fusarium oxysporum 12S BAG80558.1 B6F260   24
 double substituted xylan α-1,3-L-arabinofuranosidase (α-araF;AXHd3;;Abf II) 3.2.1.55 Humicola insolens DSM 18000 CAL81199.1   3ZXJ[A,B]
3ZXK[A,B]
3ZXL[A,B]
36
 α-L-arabinofuranosidase (Abf43;HiAbf43) 3.2.1.55 Humicola insolens Y1 AIM56896.1     26
 β-xylosidase / α-L-arabinofuranosidase (Xyl43A) 3.2.1.37 Humicola insolens Y1 AHC72382.1     1
 β-xylosidase / α-L-arabinofuranosidase (Xyl43B) 3.2.1.37
3.2.1.55
Humicola insolens Y1 AHC72383.1     11
 exo-β-1,3-galactanase (Il3Gal;Il1,3GAL) 3.2.1.145 Irpex lacteus NBRC 5367 BAH29957.1 B9ZZS1   24
 α-L-arabinofuranosidase B (AbfB;MoAbfB;MG06843;MGG_06843( 3.2.1.55 Magnaporthe oryzae 70-15 XP_370346.1 G4MMH2   26
 β-1,4-xylosidase (PtXyl43) (Xyl43) 3.2.1.37 Paecilomyces sp. J18 / Paecilomyces thermophila J18 ADM33794.1     1
 arabinan endo-α-1,5-L-arabinosidase (AbnC;Abnc) 3.2.1.99 Penicillium chrysogenum 31B BAD15018.1 Q75WE6   6
 endo-α-1,5-L-arabinanase (AbnS1) 3.2.1.99 Penicillium chrysogenum 31B BAD89094.2
BAD89094.1
BAJ49868.1
Q5H7M8 cryst 6
 single-substituted arabinan-specific α-L-arabinofuranosidase (PcAbf43A;Pc06g00650) (Abf43A) 3.2.1.55 Penicillium chrysogenum 31B BAM73651.1     26
 α-L-arabinofuranosidase (PcAbf43B) (Abf43B) 3.2.1.55 Penicillium chrysogenum 31B BAQ35744.1     21
 β-xylosidase S2 3.2.1.37 Penicillium herquei IFO 4674 BAC75546.1 Q870E8   1
 exo-β-1,3-galactanase (Pc1,3Gal43A) (1,3Gal43A) 3.2.1.145 Phanerochaete chrysosporium BAD98241.1 Q50KB2 cryst 24
 endo-α-1,5-L-arabinanase (Ara;PcARA) 3.2.1.99 Phanerochaete chrysosporium BKM-F-1767 AFN42888.1     5
 β-xylosidase / α-L-arabinofuranosidase (Xyl;PcXyl) 3.2.1.37 Phanerochaete chrysosporium BKM-F-1767 AFW16059.1     14
 endo-1,5-α-L-arabinanase (RmArase) 3.2.1.99 Rhizomucor miehei CAU432 AHF50152.1     5
 α-L-arabinofuranosidase 3 / β-xylosidase (Abf3) 3.2.1.37
3.2.1.55
Talaromyces purpureogenus MYA-38 ACP50519.2
ACP50519.1
C3W4Y2   29
 β-1,4-xylosidase (Xyl43;TlXyl43;NOKS4_002883-RA) 3.2.1.37 Thermomyces lanuginosus CAU44 ADW66247.1     1
unclassified
Protein Name EC#OrganismGenBank UniprotPDB/3D Subf
 arabinanase 43A (G12-10;GH43b(G12);BN138_172) (Abn43A) 3.2.1.99 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) 3.2.1.55 termite gut metagenome CCO20994.1     29
 multimodular xylanase (fragment) 3.2.1.- uncultured organism ADD61461.1 D9ZDQ7   16
 β-xylosidase (RS223-BX) 3.2.1.37 uncultured organism AFP23142.1   4MLG[A,B,C,D,E,F,G,H,I,J,K,L] 1
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