Glycoside Hydrolase Family 3

Known Activitiesβ-glucosidase (EC 3.2.1.21); xylan 1,4-β-xylosidase (EC 3.2.1.37); β-N-acetylhexosaminidase (EC 3.2.1.52); glucan 1,3-β-glucosidase (EC 3.2.1.58); glucan 1,4-β-glucosidase (EC 3.2.1.74); exo-1,3-1,4-glucanase (EC 3.2.1.-); α-L-arabinofuranosidase (EC 3.2.1.55).
Mechanism Retaining
Catalytic Nucleophile/BaseAsp (experimental)
Catalytic Proton DonorGlu (experimental)
External resourcesCAZypedia; HOMSTRAD; InterPro; PFAM; PRINTS; PROSITE;
Commercial Enzyme Provider(s)MEGAZYME; PROZOMIX ;
Statistics GenBank accession (4332); Uniprot accession (2411); PDB accession (34); 3D entries (13); cryst (5)
All (3741) Archaea (52) Bacteria (3132) Eukaryota (523) unclassified (34) Structure (13 - 5 cryst) Characterized (189)
Bacteria
Protein Name EC#OrganismGenBankUniprotPDB/3D
 β-N-acetylglucosaminidase (NagZ;YbbD;YzbA;BSU01660) 3.2.1.52 Bacillus subtilis subsp. subtilis str. 168 AAA64351.1
BAA19499.1
CAB11942.1
NP_388047.1
P40406 3BMX[A,B]
3CQM[A,B]
3LK6[A,A,B,B,C,C,D,D]
3NVD[A,B]
 DR1333 / DR_1333   Deinococcus radiodurans R1 AAF10903.1
NP_295057.1
Q9RUP9 3TEV[A,B]
 exo-1,3/1,4-β-glucanase (GluA;ExoP) 3.2.1.- Pseudoalteromonas sp. BB1 ABC88234.1 Q0QJA3 3F93[A,B,C,D]
3F94[A]
3RRX[A]
3USZ[A]
3UT0[A,B,C,D]
 β-xylosidase (BxlA) 3.2.1.37 Streptomyces thermoviolaceus OPC-520 BAB61064.1
BAD02389.1
Q76BU6 cryst
 SYNPCC7002_A0075   Synechococcus sp. PCC 7002 ATCC 27264 ACA98092.1 B1XLD2 3SQL[A,B]
3SQM[A,B,C,D]
 TM0076 (Xyl3)   Thermotoga maritima MSB8 AAD35170.1
NP_227892.1
Q9WXT1 cryst
 β-glucosidase B (BglB;CTN_0670) (Bgl3B) 3.2.1.21 Thermotoga neapolitana DSM 4359 ABI29899.1
ACM22846.1
Q0GC07 2WT3[A]
2WT5[A]
2WT6[A]
2X40[A]
2X41[A]
2X42[A]
 β-N-acetylglucosaminidase (CbsA) 3.2.1.52 Thermotoga neapolitana KCCM41025 AAK16587.1 Q9AG27 cryst
 β-glucosidase B (BglB) 3.2.1.21 Thermotoga neapolitana Z2706-MC24 CAB01407.1 Q60038 cryst
 β-N-acetylhexosaminidase (NagZ;VC0692) 3.2.1.52 Vibrio cholerae O1 biovar El Tor str. N16961 AAF93857.1
NP_230341.1
Q9KU37 1TR9[A]
1Y65[A]
2OXN[A]
3GS6[A]
3GSM[A]
Eukaryota
Protein Name EC#OrganismGenBankUniprotPDB/3D
 exo-β-1,3-1,4-glucanase (ExoI) 3.2.1.- Hordeum vulgare subsp. vulgare AAD23382.1
BAK05680.1
Q9XEI3 1EX1[A]
1IEQ[A]
1IEV[A]
1IEW[A]
1IEX[A]
1J8V[A]
1LQ2[A]
1X38[A]
1X39[A]
 β-glucosidase I (Bgl;KmBglI) 3.2.1.21 Kluyveromyces marxianus NBRC1777 ACY95404.1 D1GCC6 3ABZ[A,B,C,D]
3AC0[A,B,C,D]
 β-glucosidase (tomatinase;B2Tom) 3.2.1.21 Septoria lycopersici AAB08445.1
AAB08446.1
Q99324 cryst




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