Glycoside Hydrolase Family 20

Activities in Familyβ-hexosaminidase (EC 3.2.1.52); lacto-N-biosidase (EC 3.2.1.140); β-1,6-N-acetylglucosaminidase) (EC 3.2.1.-); β-6-SO3-N-acetylglucosaminidase (EC 3.2.1.-)
Mechanism Retaining
ClanGH-K
3D Structure Status( β / α ) 8
Catalytic Nucleophile/Basecarbonyl oxygen of C-2 acetamido group of substrate
Catalytic Proton DonorGlu
External resourcesCAZypedia; HOMSTRAD; PRINTS; Tay-Sachs Disease;
Commercial Enzyme Provider(s)MEGAZYME;
Statistics GenBank accession (5526); Uniprot accession (778); PDB accession (82); 3D entries (18); cryst (0)
All (5248) Archaea (4) Bacteria (4894) Eukaryota (338) Viruses (2) unclassified (10) Structure (18) Characterized (124)
| 1 | 2 | 3 | 4 |
Eukaryota
Protein Name EC#OrganismGenBank UniprotPDB/3D
 β-N-acetylglucosaminidase (Nag)   Trichoderma hamatum GD12 AEM46056.1    
 exo-chitinase 1 (Exc1) 3.2.1.52 Trichoderma harzianum AAB47060.1 P78738  
 exo-chitinase 2 (Exc2) 3.2.1.52 Trichoderma harzianum AAB47061.1 P78739  
 hexosaminidase (Exc1y) 3.2.1.52 Trichoderma harzianum T-Y CAC85402.1 Q8NIN7  
 hexosaminidase (Exc2y) 3.2.1.52 Trichoderma harzianum T-Y CAC85401.1 Q8NIN6  
 TRIREDRAFT_23346 (Nag2)   Trichoderma reesei QM6a EGR44872.1    
 β-N-acetylglucosaminidase (Nag1;TRIREDRAFT_21725) 3.2.1.52 Trichoderma reesei QM6a / RutC30?U3 EGR50812.1    
 exochitinase (ExoChi)   Trichoderma saturnisporum ADB89218.1 D3JTC5  
 Nag1   Trichoderma virens AAL78815.1
AAL84700.1
ACJ09606.1
Q8TFA8  
 chitobiase (Nag2)   Trichoderma virens AAL84701.1 Q8TG95  
 β-N-acetylglucosaminidase (Nag1)   Trichoderma virens T.v.223 AFD36224.1    
 β-N-acetylhexosaminidase (Nag2)   Trichoderma virens T.v.223 AFD36225.1    
 β-N-acetylglucosaminidase   Trichoplusia ni AAL82580.1
ABH09730.1
ABH09731.1
Q8T4N1  
 fused lobes (FdL)   Trichoplusia ni ACV89845.1 D3GGI7  
 CAMPLR22A2D_LOCUS1847   Triticum aestivum SPT17241.1    
 TRAES_3BF032000090CFD_c1   Triticum aestivum CDM85418.1    
 UBRO_05562   Ustilago bromivora UB2112 SAM83458.1    
 UBRO_01069   Ustilago bromivora UB2112 SAM59527.1    
 exochitinase   Ustilago maydis UM521 CAC59704.1
CAC41659.1
Q96VD9
Q96VF2
 
 VIGAN_08011600 (Vigan.08g011600)   Vigna angularis var. angularis BAT93601.1    
 VIGAN_07197900 (Vigan.07g197900)   Vigna angularis var. angularis BAT93082.1    
 VIGAN_07200800 (Vigan.07g200800)   Vigna angularis var. angularis BAT93106.1    
 VIGAN_04018100 (Vigan.04g018100) (fragment)   Vigna angularis var. angularis BAT83080.1    
 VITISV_034316   Vitis vinifera CAN76146.1 A5AX89  
 Unknown (IMAGE:8821228)   Xenopus laevis AAI59343.1
AEJ87970.1
B0JZW3  
 ORF LOC548664 (fragment)   Xenopus tropicalis AAI18694.1 Q0VFU8  
 Unknown (protein for MGC:186576)   Xenopus tropicalis AAI61740.1 B1WBF9  
 Unknown (protein for MGC:180661)   Xenopus tropicalis TGA IC AAI55389.1 A9JTL3  
 Unknown (MGC:185627 IMAGE:9008908)   Xenopus tropicalis TGA IC AAI61249.1 B1H351  
 β-N-acetylglucosaminidase   Xestia c-nigrum ACR57832.1 C5IBZ5  
 unknown   Zea mays ACG25422.1 B6SKN9  
 Zm.1436 (ZmExo1;LOC100281192)   Zea mays ACG27987.1 B6ST04  
 unknown   Zea mays B73 ACN36154.1 C0PLT8  
 exochitinase 2 (Zm.15748;ZmExo2;LOC100280178;ZM_BFb0204B20) 3.2.1.52 Zea mays B73 ACF87335.1
ACG29631.1
ACL54323.1
B4FYZ2  
 ZT1A5_G6783   Zymoseptoria tritici ST99CH_1A5 SMY25341.1    
 ZT1E4_G6865   Zymoseptoria tritici ST99CH_1E4 SMR53952.1    
 ZT3D1_G6780   Zymoseptoria tritici ST99CH_3D1 SMR56158.1    
 ZT3D7_G6854   Zymoseptoria tritici ST99CH_3D7 SMQ51701.1    
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