Glycoside Hydrolase Family 4

Activities in Family6-P-α-glucosidase (EC 3.2.1.122);
α-glucuronidase (EC 3.2.1.139);
α-glucosidase (EC 3.2.1.20);
β-glucosidase (EC 3.2.1.21);
α-galactosidase (EC 3.2.1.22);
Galacturonan α-1,4-galacturonidase (EC 3.2.1.67);
6-P-β-glucosidase (EC 3.2.1.86);
Mechanism Other a,e
3D Structure StatusRossmann fold
Catalytic Nucleophile/BaseNot applicable
Catalytic Proton DonorNot known
NoteThe enzymes in this family display an unusual mechanism involving NAD+.
External resourcesCAZypedia; PRINTS;
Statistics GenBank accession (27850); Uniprot accession (30); PDB accession (21); 3D entries (10); cryst (0)
Archaea
Protein Name EC#OrganismGenBank UniprotPDB/3D
 Cmaq_0830   Caldivirga maquilingensis IC-167 ABW01665.1    
 Cmaq_1215   Caldivirga maquilingensis IC-167 ABW02042.1    
 NEF87_004463   Candidatus Lokiarchaeum sp. B-35 UYP48178.1    
 EFA46_011085 (MelA)   Halarchaeum sp. CBA1220 QLC34801.1    
 EFA46_011020   Halarchaeum sp. CBA1220 QLC34789.1    
 EFA46_010670   Halarchaeum sp. CBA1220 QLC34724.1    
 HSBGL_0538 (CelF)   Haloarculaceae archaeon HSR-Bgl QSG10973.1    
 HSEST_3014 (CelF)   Halapricum desulfuricans HSR-Est QSG16278.1    
 HSR121_0433 (CelF)   Haloarculaceae archaeon HSR12-1 QSG04789.1    
 HSR122_2563 (CelF)   Haloarculaceae archaeon HSR12-2 QSG09939.1    
 LT974_07945   Halobacterium noricense JCM 15102 UHH23931.1    
 HUG10_16360   Halobaculum halophilum Gai3-2 QLG29013.1    
 HUG10_15405   Halobaculum halophilum Gai3-2 QLG28842.1    
 MW046_14385   Halocatena salina AD-1 UPM44202.1    
 MW046_18455 (MelA)   Halocatena salina AD-1 UPM45038.1    
 MW046_14760   Halocatena salina AD-1 UPM44271.1    
 ABY42_15275   Haloferax gibbonsii ARA6 AKU09170.1    
 HfgLR_22700 (LplD)   Haloferax gibbonsii LR2-5 QOS13748.1    
 HVO_B0343 (LplD)   Haloferax volcanii DS2 ADE01358.1    
 LC1Hm_4049 (MelA)   Halomicrobium sp. LC1Hm QGA84384.1    
 Halxa_3609   Halopiger xanaduensis SH-6 AEH38218.1    
 Halxa_3781   Halopiger xanaduensis SH-6 AEH38387.1    
 Halxa_0450   Halopiger xanaduensis SH-6 AEH39051.1    
 Halxa_0505   Halopiger xanaduensis SH-6 AEH39104.1    
 HBNXHr_1469 (Celf2)   Halorhabdus sp. BNX81 WEL21531.1    
 HBNXHr_0746 (CelF)   Halorhabdus sp. BNX81 WEL20819.1    
 SVXHr_0766 (CelF)   Halorhabdus sp. SVX81 WEL16945.1    
 SVXHr_1484 (Celf2)   Halorhabdus sp. SVX81 WEL17652.1    
 HTIA_0721   Halorhabdus tiamatea SARL4B type strain: SARL4B CCQ32861.1    
 Huta_0159   Halorhabdus utahensis DSM 12940 ACV10347.1    
 Huta_0863   Halorhabdus utahensis DSM 12940 ACV11046.1    
 NGM07_22975   Halorussus vallis XZYJT10 USZ78424.1    
 I7X12_19060   Halosimplex litoreum YGH94 QPV62798.1    
 HZS54_19420   Halosimplex pelagicum R2 QLH83665.1    
 HZS54_02025 (MelA)   Halosimplex pelagicum R2 QLH80481.1    
 HZS55_16615   Halosimplex rubrum R27 QLH78811.1    
 HZS55_01560 (MelA)   Halosimplex rubrum R27 QLH76069.1    
 HZS55_13740 (MelA)   Halosimplex rubrum R27 QLH78304.1    
 HALLA_02985   Halostagnicola larsenii XH-48 AHG01365.1    
 HALLA_04390   Halostagnicola larsenii XH-48 AHG01644.1    
 HALLA_04620   Halostagnicola larsenii XH-48 AHG01689.1    
 JMJ58_22720   Haloterrigena salifodinae BOL5-1 QRV17787.1    
 JMJ58_21355   Haloterrigena salifodinae BOL5-1 QRV17398.1    
 JMJ58_23645   Haloterrigena salifodinae BOL5-1 QRV17980.1    
 Htur_3895   Haloterrigena turkmenica DSM 5511 ADB62753.1    
 Htur_4484   Haloterrigena turkmenica DSM 5511 ADB63295.1    
 Htur_4649   Haloterrigena turkmenica DSM 5511 ADB63434.1    
 Htur_4787   Haloterrigena turkmenica DSM 5511 ADB63559.1    
 Igag_0370   Ignisphaera aggregans DSM 17230 ADM27212.1    
 IG193_01285   Infirmifilum lucidum 3507LT QOJ79730.1    
 MOV14_09555   Infirmifilum sp. NZ UNQ73343.1    
 MA03_03630   Infirmifilum uzonense 1807-2 AKG38554.1    
 AArcS_2086 (CelF)   Natranaeroarchaeum sulfidigenes AArc-S QSG03286.1    
 HYG81_01630   Natrinema zhouii YPL30 QLK26349.1    
 PAP_04140   Palaeococcus pacificus DY20341 AIF69243.1    
 Shell_0087   Staphylothermus hellenicus DSM 12710 ADI31235.1    
 Smar_0706   Staphylothermus marinus F1 ABN69809.1    
 FPV09_10740 (fragment)   Thermococcus aciditolerans SY113 QEK15480.1    
 TBCH5v1_1156   Thermococcus barophilus CH5 ALM75090.1    
 TERMP_00967   Thermococcus barophilus MP ADT83943.1    
 A3L01_07400   Thermococcus barossii SHCK-94 ASJ05204.1    
 TIRI35C_1804   Thermococcus camini IRI35c CAD5244958.1    
 A3L11_00610   Thermococcus siculi RG-20 ASJ07805.1    
 CDI07_08175   Thermococcus sp. 5-4 ASA78270.1    
 VFC49_02980   Thermococcus sp. SY098 WRS53112.1    
 A3L14_09730   Thermococcus thioreducens OGL-20P ASJ13149.1    
 TCARB_0849   Thermofilum adornatum 1505 AJB41901.1    
 N186_08855   Thermofilum adornatum 1910b AGT36107.1    
 Tpen_1511   Thermofilum pendens Hrk 5 ABL78908.1    
 IMZ38_03785   Thermosphaera aggregans 3507 QOR95026.1    
 Tagg_1191   Thermosphaera aggregans DSM 11486 ADG91459.1    
 alpha galactosidase (GaL) (fragment)   uncultured archaeon CAZ66676.1    
 alpha galactosidase (GaL) (fragment)   uncultured archaeon CAZ66677.1    
 α-galactosidase (GaL) (fragment)   uncultured archaeon CAZ66678.1    
 alpha galactosidase (GaL) (fragment)   uncultured archaeon CAZ66679.1    
 GaL (frament) (fragment)   uncultured archaeon CCF72381.1    
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