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Glycoside Hydrolase Family 20

Activities in Familyβ-1,6-N-acetylglucosaminidase (EC 3.2.1.-);
β-N-acetyl-6-sulfo-glucosaminidase (EC 3.2.1.-);
Lacto-N-biosidase (EC 3.2.1.140);
β-N-acetylhexosaminidase (EC 3.2.1.52);
Mannosyl-glycoprotein endo-β-N-acetylglucosaminidase (EC 3.2.1.96);
Mechanism Retaining e
ClanGH-K
3D Structure Status( β / α ) 8 barrel
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 (19980); Uniprot accession (182); PDB accession (113); 3D entries (32); cryst (0)
Summary
Download GH20 (22382) Taxonomic display Structure (32) Characterized (133)
| 1 | 2 |
Bacteria
Protein Name EC#ReferenceOrganismGenBank UniprotPDB/3D
 dispersin B / β-1,6-N-acetylglucosaminidase (DspB) 3.2.1.- pubmed
 Actinobacillus pleuropneumoniae IA1 AAT46094.1 Q6GYA5  
 chitobiase (NagA1) 3.2.1.52 doi
 Aeromonas caviae CB101 CAH55822.1 Q659J9  
 β-N-acetylglucosaminidase (NagA;Nag-A) (Nag20A) 3.2.1.52 pubmed
 Aeromonas hydrophila SUWA-9 BAD00143.1 Q75V90  
 β-N-acetylglucosaminidase (NagB;Nag-B) 3.2.1.52 pubmed
 Aeromonas hydrophila SUWA-9 BAF76001.1 A7M7B5  
 β-N-acetylglucosaminidase 3.2.1.52 pubmed
 Aeromonas sp. 10S-24 BAA92145.1 Q9LC82  
 dispersin B / β-1,6-N-acetylglucosaminidase (DspB) 3.2.1.- pubmed
 Aggregatibacter actinomycetemcomitans CU1000 AAP31025.1 Q840G9 1YHT[A]
 β-N-acetylhexosaminidase (Amuc_0868) 3.2.1.52 pubmed
 Akkermansia muciniphila ATCC BAA-835 ACD04701.1
QTD81489.1		 B2UQG6 7CBN[A]
7CBO[A]
 β-N-acetylhexosaminidase (Amuc_2018) 3.2.1.52 pubmed
 Akkermansia muciniphila ATCC BAA-835 ACD05828.1
QTD80528.1		 B2UP57 6JE8[A]
6JEA[A]
6JEB[A]
 β-N-acetylhexosaminidase (Amuc_2136) 3.2.1.52 pubmed
 Akkermansia muciniphila ATCC BAA-835 ACD05945.1
QTD80640.1		 B2UPR7 6JQF[A]
7EZT[A,B,C,D]
 chitobiase (Chb;ArChb) 3.2.1.52 pubmed
 Arthrobacter sp. TAD20 CAB72127.1 Q9L448  
  β-N-acetylhexosaminidase (NahB; BF1734) 3.2.1.52 pubmed
 Bacteroides fragilis YCH46 BAD48481.1
BAC56900.2		 G8K031
Q84ID8		  
 β-N-acetylglucosaminidase (NahC; BF1736) 3.2.1.52 pubmed
 Bacteroides fragilis YCH46 BAD48483.1
BAC56902.1
BAC56902.2		 G8K030
Q84ID6		  
 β-N-acetyl-6-sulfo-glucosaminidase (Btheta7330_03706) 3.2.1.- doi
 Bacteroides thetaiotaomicron 7330 ALJ43236.1   7DUP[A]
7DVA[A,B]
7DVB[A,B,C,D]
8BDP[A]
 β-N-acetylglucosaminidase (BT0459; BT_0459) 3.2.1.52 pubmed
 Bacteroides thetaiotaomicron VPI-5482 AAO75566.1
NP_809372.1		 A0A174QSL3
Q8AAK5		 6Q63[A,B,C]
 β-N-acetylhexosaminidase (BT0460; BT_0460) 3.2.1.52 pubmed
 Bacteroides thetaiotaomicron VPI-5482 AAO75567.1
NP_809373.1		 Q8AAK4  
  β-N-acetylhexosaminidase (BT0456) 3.2.1.52 pubmed
 Bacteroides thetaiotaomicron VPI-5482 AAO75563.1
NP_809369.1		 Q8AAK8  
 β-N-acetylhexosaminidase (BT0506) 3.2.1.52 pubmed
 Bacteroides thetaiotaomicron VPI-5482 AAO75613.1
NP_809419.1		 Q8AAF9  
 lacto-N-triose II β-N-acetylhexosaminidase (BbhI) 3.2.1.52 pubmed
 Bifidobacterium bifidum JCM 1254 BAI94822.1 D4QAP4  
 β-N-acetyl-6-sulfo-glucosaminidase (BbhII) 3.2.1.- doi
 Bifidobacterium bifidum JCM 1254 BAI94823.1 D4QAP5 6YXZ[A]
6Z14[A]
7WDT[A]
7WDU[A]
 lacto-N-biosidase (LnbB) 3.2.1.140 pubmed
 Bifidobacterium bifidum JCM 1254 ABZ78855.1 B3TLD6 4H04[A,B]
4JAW[A,B]
5BXP[A,B]
5BXR[A,B]
5BXS[A,B]
5BXT[A,B]
 β-N-acetylhexosaminidase / β-N-acetylglucosaminidase (Blon_0459) 3.2.1.52 pubmed
 Bifidobacterium longum subsp. infantis ATCC 15697 = JCM 1222 = DSM 20088 ACJ51575.1 B7GN69  
 β-N-acetylhexosaminidase / β-N-acetylglucosaminidase (Blon_0732) 3.2.1.52 pubmed
 Bifidobacterium longum subsp. infantis ATCC 15697 = JCM 1222 = DSM 20088 ACJ51836.1 B7GPV6  
 β-N-acetylhexosaminidase / β-N-acetylglucosaminidase (Blon_2355) 3.2.1.52 pubmed
 Bifidobacterium longum subsp. infantis ATCC 15697 = JCM 1222 = DSM 20088 ACJ53413.1 B7GNQ7  
 β-N-acetylhexosaminidase (Hex20) (Hex20A) 3.2.1.52 pubmed
 Cellulomonas fimi ATCC 484 AAQ05800.1 Q7WUL4  
 β-N-acetylglucosaminidase I (ChiI) 3.2.1.52 pubmed
 Chitiniphilus shinanonensis SAY3 BAK53904.1    
 β-N-acetylglucosaminidase (NAGase; CmNAGase) 3.2.1.52 pubmed
 Chitinolyticbacter meiyuanensis SYBC-H1 QKX94056.1    
 β-N-acetylglucosaminidase (Nag1) 3.2.1.52 pubmed
 Enterobacter sp. G-1 BAA74506.1 Q9ZN69  
 endoglycosidase (EndoE;NdoE) 3.2.1.96 pubmed
 Enterococcus faecalis HER1044 AAR20477.1 Q6U890 7PUL[A]
 bifunctional endo-β-N-acetylglucosaminidase / exo-β-N-acetylglucosaminidase (EndoE;OG1RF_10107) 3.2.1.52 pubmed
 Enterococcus faecalis OG1RF AEA92794.1
AZV32936.1		    
 endo-N-glycosidase (EndoE;EF0114) 3.2.1.52
3.2.1.96		 pubmed
pubmed
 Enterococcus faecalis V583 AAO79989.1
AAR59794.1
AAR59795.1
NP_813917.1		 Q839P8  
 β-N-acetylhexosaminidase (FjGH20; Fjoh_4556) 3.2.1.52 pubmed
 Flavobacterium johnsoniae UW101 ABQ07555.1 A5FB64 6YHH[A,B]
 β-N-acetylglucosaminidase 3.2.1.52 pubmed
 Lacticaseibacillus casei ATCC 27092 BAA76352.1 Q9WXH9  
 β-N-acetylhexosaminidase (LnbA;L126168) 3.2.1.52 pubmed
 Lactococcus lactis subsp. lactis Il1403 AAK05592.1
NP_267650.1		 Q9CFI2  
 β-N-acetylhexosaminidase (hj5Nag) 3.2.1.52 pubmed
 Microbacterium sp. HJ5 ARJ33352.1 A0A1W6AQA7 7BWG[A,B]
 β-N-acetyl-6-sulfo-glucosaminidase (Niako_3494) 3.2.1.- pubmed
 Niastella koreensis GR20-10 AEV99795.1 G8TKW6 8BAL[A,B,C,D,E]
 β-N-acetylhexosaminidase (OPIT5_18630) 3.2.1.52 pubmed
 Opitutaceae bacterium TAV5 AHF94523.1 W0JBW2  
 β-hexosaminidase (Hex1T) 3.2.1.52 pubmed
 Paenibacillus sp. TS12 BAI63641.1 D0VX21
D2KW09		 3GH4[A]
3GH5[A]
3GH7[A]
3SUR[A]
3SUS[A]
3SUT[A]
3SUU[A]
3SUV[A]
3SUW[A]
 β-N-acetylglucosaminidase (NahA;PG0043) 3.2.1.52 pubmed
 Porphyromonas gingivalis W83 CAA55582.1
AAQ65295.1
NP_904396.1		 P49008  
 mucin-desulfating glycosidase / sulfoglycosidase / β-6-SO3-N-acetylglucosaminidase (SGL) 3.2.1.- pubmed
 Prevotella sp. RS2 AAW30398.1 Q5MAH5 8BBL[A,B,C,D,E,F,G,H]
 β-N-acetylhexosaminidase 3.2.1.52 pubmed
 proteobacterium AI21 ABE96869.1 A1XNE6  
 β-N-acetylglucosaminidase B (Nag096) 3.2.1.52 pubmed
 Pseudoalteromonas piscicida O-7 BAA06136.1 P49007  
 β-N-acetylhexosaminidase (Hex86) 3.2.1.52 pubmed
 Pseudoalteromonas piscicida O-7 BAB84321.1 Q8VUM1  
 β-N-acetylglucosaminidase A (NagA) 3.2.1.52 pubmed
 Pseudoalteromonas piscicida O-7 BAB17855.1 Q9FAC5  
 β-N-acetylglucosaminidase (ChiP) 3.2.1.52 pubmed
 Pseudoalteromonas sp. S9 S91 AAC83238.1 Q9ZH38  
 β-N-acetylglucosaminidase 20B (HexB;Sde_3271) (Hex20B) 3.2.1.52 pubmed
 Saccharophagus degradans 2-40 DAA01339.1
ABD82526.1
ACG81707.1		 Q7PC48  
 β-N-acetylglucosaminidase 20A (HexA; Sde_3037) (Hex20A) 3.2.1.52 pubmed
 Saccharophagus degradans 2-40 DAA01338.1
ABD82294.1
ACG81706.1		 Q7PC49  
 chitobiase (Chb;Ctb;SmCHB;SmGH20A) 3.2.1.52 pubmed
 Serratia marcescens 2170 AAB03808.1 Q54468 1C7S[A]
1C7T[A]
1QBA[A]
1QBB[A]
 β-N-acetylhexosaminidase (Hex;StmHex;Smlt4027) 3.2.1.52 pubmed
 Stenotrophomonas maltophilia K279a CAQ47422.1 B2FUR2  
 β-N-acetylglucosaminidase (GcnA) 3.2.1.52 pubmed
 Streptococcus gordonii FSS2 AAS02154.1 Q6ST21 2EPK[X]
2EPL[X]
2EPM[X]
2EPN[A,B]
2EPO[A,B]
 β-N-acetylglucosaminidase (StrH) 3.2.1.52 pubmed
pubmed
 Streptococcus pneumoniae ATCC 12213 AAC41450.1 P49610  
 β-N-acetylglucosaminidase (StrH) 3.2.1.52 pubmed
pubmed
 Streptococcus pneumoniae ATCC 12213 AAC41450.1 P49610  
 β-N-acetylhexosaminidase (StrH;spr0057) 3.2.1.52 pubmed
pubmed
 Streptococcus pneumoniae R6 AAK98861.1
NP_357651.1		 Q8DRL6 3RPM[A]
 β-N-acetylhexosaminidase (StrH;spr0057) 3.2.1.52 pubmed
pubmed
 Streptococcus pneumoniae R6 AAK98861.1
NP_357651.1		 Q8DRL6 3RPM[A,B]
 β-N-acetylhexosaminidase (GH20C;SP2141;SP_2141) 3.2.1.52 pubmed
 Streptococcus pneumoniae TIGR4 AAK76198.1 A0A0H2US73 5A69[A]
5A6A[A,B]
5A6B[A,B,C,D]
5A6J[A,B,C,D]
5A6K[A,B]
5AC4[A,B]
5AC5[A,B]
 β-N-acetylglucosaminidase (StrH;SP0057;SP_0057) 3.2.1.52 pubmed
pubmed
 Streptococcus pneumoniae TIGR4 AAK74246.1
NP_344606.1		 P49610 2YL6[A]
2YL8[A]
2YLL[A]
4AZ5[A]
4AZ6[A]
4AZ7[A]
4AZB[A]
 β-N-acetylglucosaminidase (StrH;SP0057;SP_0057) 3.2.1.52 pubmed
pubmed
 Streptococcus pneumoniae TIGR4 AAK74246.1
NP_344606.1		 P49610 2YL5[A,B,C,D]
2YL9[A,B,C,D]
2YLA[A,B,C,D]
4AZC[A,B,C,D]
4AZG[A,B]
4AZH[A,B,C,D]
4AZI[A,B]
 β-N-acetylhexosaminidase (SaHEX) 3.2.1.52 pubmed
 Streptomyces alfalfae ACCC 40021 AYR18867.1 A0A3G3NI51  
 β-N-acetylhexosaminidase (HexA;SCO2786) 3.2.1.52 pubmed
 Streptomyces coelicolor A3(2) CAB87223.1
NP_627016.1		 Q9L068 4C7D[A,B]
4C7F[A,B]
4C7G[A]
 β-N-acetylhexosaminidase (SGR_4591) 3.2.1.52 pubmed
 Streptomyces griseus subsp. griseus NBRC 13350 BAG21420.1 B1VVQ9  
 β-N-acetylglucosaminidase (Hex;SpHex) 3.2.1.52 pubmed
 Streptomyces plicatus AAC38798.3 O85361 1HP4[A]
1HP5[A]
1JAK[A]
1M01[A]
1M03[A]
1M04[A]
5FCZ[A]
5FD0[A]
 lacto-N-biosidase 3.2.1.140 pubmed
 Streptomyces sp. 142 AAD10478.1
AAE24545.1		 Q9Z4I7 8HVB[A]
8HVC[A]
8HVD[A]
 β-N-acetylglucosaminidase C (NagC) 3.2.1.52 pubmed
 Streptomyces thermoviolaceus OPC-520 BAC76622.1 Q83WL6  
 N-acetyl β-glucosaminidase (NagB) 3.2.1.52 pubmed
 Streptomyces thermoviolaceus OPC-520 BAA88762.2 Q9RHV6  
 β-N-acetylglucosaminidase (HexA;NABGLU;TF2925;BFO_1923) 3.2.1.52 pubmed
 Tannerella forsythia 92A2 AEW20137.1
AAO33832.1		 G8UPN3
Q84FS9		  
 β-N-acetylhexosaminidase (Hex1;SoMe-cHEX1) 3.2.1.52 pubmed
 uncultured Actinomycetales bacterium AKC34128.1 A0A0E3XI19  
 β-N-acetylhexosaminidase (Hex2;SoMe-cHEX2) 3.2.1.52 pubmed
 uncultured Bacteroidetes bacterium AKC34129.1 A0A0E3XHF8  
 N-acetylhexosaminidase (ExoI) 3.2.1.52 pubmed
 Vibrio furnissii AAC44672.1
AAE36540.1		 P96155  
 β-N-acetylglucosaminidase (Nag1;VhNag1) 3.2.1.52 pubmed
 Vibrio harveyi 650 ADJ68332.1 D9ISD9  
 β-N-acetylglucosaminidase (Nag2;VhNag2) 3.2.1.52 pubmed
 Vibrio harveyi 650 ADJ68333.1 D9ISE0 6EZR[A,B]
6EZS[A,B]
6EZT[A,B]
6K35[A,B]
 N-acetyl β-glucosaminidase (Chb) 3.2.1.52 pubmed
 Vibrio harveyi B392 AAA88682.1
AAR60429.1
AAX00633.1
CAD26692.1		 P13670  
 N-acetyl β-glucosaminidase (Chb) 3.2.1.52 pubmed
 Vibrio parahaemolyticus ATCC 27969 AAA65915.1 Q60081  
 exo-β-N-acetylglucosaminidase (NixG;NahA;XCC2890) 3.2.1.52 pubmed
 Xanthomonas campestris pv. campestris str. ATCC 33913 AAM42162.1
NP_638238.1		 Q8P6S5  
 β-N-acetylglucosaminidase (NagA;YPTB1123) 3.2.1.52 pubmed
 Yersinia pseudotuberculosis IP 32953 CAH20363.1 Q66DC3  
Eukaryota
Protein Name EC#ReferenceOrganismGenBank UniprotPDB/3D
 processing β-N-acetylglucosaminidase / α-subunit (Fdl;AmFDL) (partial) 3.2.1.52 pubmed
 Apis mellifera AIZ97749.1 A0A0A7NXB7  
 β-N-acetylhexosaminidase 2 (Hexo2; AtHex1; At1g05590) (plasma membrane) 3.2.1.52 pubmed
 Arabidopsis thaliana AAD30612.1
AEE27861.1
ANM60833.1
ANM60834.1
NP_172050.1		 A0A5S9ST94
Q9SYK0		  
 β-N-acetylhexosaminidase 3 (Hexo3; AtHex3; At1g65590) (plasma membrane) 3.2.1.52 pubmed
 Arabidopsis thaliana AAM91092.1
AAB60911.1
AAN33206.1
AEE34399.1
NP_176737.2		 A0A654EL99
O04477
Q8L7S6		  
 β-N-acetylhexosaminidase 1 (Hexo1; AtHex2; At3g55260) (vacuolar) 3.2.1.52 pubmed
 Arabidopsis thaliana BAE99290.1
AAM61367.1
AAN41320.1
AEE79360.1
CAB75760.1
CAM35467.1
NP_191086.1
NP_567017.1		 A0A178VFV1
A7WM73
Q0WUA8
Q8LFK0
Q9M3C5		  
 N-acetylglucosaminidase (NagA; AN1502.2) 3.2.1.52 pubmed
 Aspergillus nidulans FGSC A4 EAA63815.1
BAB13330.1		 A0A1U8QLR6
C8VMN3
G5EB27
Q9HGI3		  
 β-N-acetylhexosaminidase (HexA) 3.2.1.52 pubmed
 Aspergillus oryzae CCF 1066 AAM13977.1 Q8J2T0 5OAR[B,D]
 β-N-acetylglucosaminidase (NagA;HexA;AO090005000639) 3.2.1.52 pubmed
 Aspergillus oryzae RIB40 BAC41255.1
BAE55679.1		 Q2URY6
Q8J2T0		  
 β-N-acetylglucosaminidase 3.2.1.52 URL
 Bombyx mandarina AAG48701.1 Q9GPG8  
 [N-glycan specific] processing β-N-acetylglucosaminidase (Fdl;BmFDL) 3.2.1.52 pubmed
 Bombyx mori ACV89846.1
ACV89847.1
BAJ20189.1		 D3GGI8
D3GGI9
E1CG96		  
 β-N-acetylglucosaminidase 3 / A (GlcNAcase3;BmGlcNAcase3) 3.2.1.52 pubmed
 Bombyx mori AAT99455.1 Q3L6N4  
 chitooligosaccharidolytic β-N-acetylglucosaminidase (BmChiGlcNAcase) 3.2.1.52 pubmed
 Bombyx mori AAC60521.1 P49010  
 β-N-acetylglucosaminidase 1 (GlcNAcase1;BmGlcNAcase1;BmHex3) 3.2.1.52 pubmed
 Bombyx mori W1-PND BAF52531.1 A4PHN6  
 β-N-acetylglucosaminidase 2 (GlcNAcase2;BmGlcNAcase2) 3.2.1.52 pubmed
 Bombyx mori W1-PND BAF52532.1 A4PHN7  
 processing β-N-acetylhexosaminidase (Hex-2;CeHEX-2;C14C11.3) 3.2.1.52 pubmed
 Caenorhabditis elegans Bristol N2 AAA96105.3
CAO72175.1
CAO72175.2
CCD64497.1		 G5EFL1
Q17977		  
 processing β-N-acetylhexosaminidase (Hex-4;CeHEX-4;Y51F10.5) 3.2.1.52 pubmed
 Caenorhabditis elegans Bristol N2 CCD73477.2
AAL35732.2
CAO72177.1		 A7DY68
Q8WTK2		  
 processing β-N-acetylhexosaminidase (Hex-5;CeHEX-5;Y70D2A.2) 3.2.1.52 pubmed
 Caenorhabditis elegans Bristol N2 CAA22078.2
CAO72178.1		 A7DY69
G5EEC8
Q9XW90		  
 processing β-N-acetylhexosaminidase (Hex-3;CeHEX-3;Y39A1C.4) 3.2.1.52 pubmed
 Caenorhabditis elegans Bristol N2 CAA19506.3
CAA19506.2
CAI06053.1
CAI06053.2
CAO72176.1		 A7DY67
G5EDG9
Q9XXE8		  
 β-N-acetylglucosaminidase (Hex1) 3.2.1.52 pubmed
 Candida albicans A72 AAA34346.2 P43077  
 β-D-N-acetylhexosaminidase 1 (β-Hex) 3.2.1.52 pubmed
 Capsicum annuum ADU20405.1 E7BYE4  
 β-N-acetylglucosaminidase 3.2.1.52 pubmed
 Choristoneura fumiferana AAX94571.1 Q52H16  
 N-acetyl-β-D-glucosaminidase (Nag1;Cr-Nag1) 3.2.1.52 pubmed
 Clonostachys rosea IK726 IBT 9371 ABC73393.1 A2SW08  
 β-N-acetylhexosaminidase / chitobiase (Hex1;CpHEX1) 3.2.1.52 pubmed
 Coccidioides posadasii SILVEIRA ABB18373.1 E9DFH0
Q309C3		  
 N-acetyl β-glucosaminidase (α-chain) (NagA) 3.2.1.52 pubmed
 Dictyostelium discoideum AAA33230.1 P13723  
 β-N-acetylhexosaminidase 2 / b(2)-subunit (Hexo2;Hex2;CG1787) 3.2.1.52 pubmed
 Drosophila melanogaster AAF46406.1
AAM48390.1
NP_525081.1		 Q9W3C4  
 β-N-acetylhexosaminidase 1 / b(1)-subunit (Hexo1;Hex1;CG1318) 3.2.1.52 pubmed
 Drosophila melanogaster AAF47881.1
AAG22248.1
AAG22248.2
AAL28566.1
AAM49995.1
AAN11596.1
AAN11597.1
AAN11597.2
ACU43551.1
NP_523924.1
NP_728974.1
NP_728975.1
NP_728976.1		 Q0E8H9
Q8IRB6
Q8MSS9
Q95S03
Q9VZE3		  
 processing β-N-acetylglucosaminidase / α-subunit (Fdl;DmFDL;CG8824;Dmel_CG8824) 3.2.1.52 pubmed
 Drosophila melanogaster AAM29423.1
AAF58500.2
AAL55992.1
AAM68691.1
AAM68691.2
AAM68692.1
AAM68693.1
ABY20426.1
AFC17499.1
AHN56148.1
AHN56149.1
NP_610790.1
NP_725178.2
NP_725179.1
NP_725180.1
QCD26198.1		 A0A0B4LF89
A0A0B4LG91
A0A4P7VJW3
A9UN21
H5V8F4
Q8WSF3		  
 β-N-acetylglucosaminidase A / α-subunit (HexA;Hex-A;Bex-1;EHI_148130) 3.2.1.52 pubmed
 Entamoeba histolytica HM-1:IMSS CAE46968.1
AAA80165.1
CAG23943.1
EAL52144.2		 C4LSY3
P49009		  
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