Glycoside Hydrolase Family 27

Activities in FamilyGalactan:galactan α-galactosyltransferase (EC 2.4.1.-);
Galactomannan exo-α-1,6-galactosidase (EC 3.2.1.-);
α-galactosidase (EC 3.2.1.22);
α-N-acetylgalactosaminidase (EC 3.2.1.49);
[retaining] β-L-arabinopyranosidase / β-L-arabinosidase (EC 3.2.1.88);
[retaining] isomalto-dextranase (EC 3.2.1.94);
Mechanism Retaining a
ClanGH-D
3D Structure Status( β / α ) 8 barrel
Catalytic Nucleophile/BaseAsp
Catalytic Proton DonorAsp
NoteMechanistic commonality with family GH36 demonstrated by Comfort et al. (2007) Biochemistry 46:3319-3330 (PMID: 17323919).
External resourcesCAZypedia; PRINTS; PROSITE;
Commercial Enzyme Provider(s)MEGAZYME; NZYTech; PROZOMIX;
Statistics GenBank accession (5220); Uniprot accession (92); PDB accession (61); 3D entries (14); cryst (0)
Archaea
Protein Name EC#OrganismGenBank UniprotPDB/3D
 HSBGL_0537   Haloarculaceae archaeon HSR-Bgl QSG10972.1    
 HSEST_3013   Halapricum desulfuricans HSR-Est QSG16277.1    
 HSR121_0434   Haloarculaceae archaeon HSR12-1 QSG04790.1    
 HSR122_2564   Haloarculaceae archaeon HSR12-2 QSG09940.1    
 MW046_14335   Halocatena salina AD-1 UPM44192.1    
 JMJ58_21215   Haloterrigena salifodinae BOL5-1 QRV17475.1    
 Htur_4675   Haloterrigena turkmenica DSM 5511 ADB63458.1    
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