Glycoside Hydrolase Family 18

Activities in FamilyNod factor hydrolase (EC 3.2.1.-);
Chitin exo-β-1,4-N-acetylglucosaminidase (EC 3.2.1.-);
Di-N-acetylchitobiase / reducing-end exo-hexosaminidase (EC 3.2.1.-);
Peptidoglycan endo-β-1,4-N-acetylglucosaminidase (EC 3.2.1.-);
Chitosanase (EC 3.2.1.132);
Chitinase (EC 3.2.1.14);
Chitin exo-β-1,4-N-acetylglucobiosaminidase (EC 3.2.1.200);
[reducing end] exo-chitinase (EC 3.2.1.201);
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 (experimental)
NoteContains chitinases of classes III and V. Contains non-catalytic proteins such as xylanase inhibitor; concanavalin B; narbonin
External resourcesCAZypedia; HOMSTRAD; PROSITE;
Commercial Enzyme Provider(s)MEGAZYME; NZYTech; PROZOMIX;
Statistics GenBank accession (41399); Uniprot accession (502); PDB accession (425); 3D entries (110); cryst (2)
| 1 | ... | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | ... | 326 |
Bacteria
Protein Name EC#OrganismGenBank UniprotPDB/3D
 NFJ30_19630   Citrobacter braakii RHB03-E1-C02 WFV31392.1    
 NFJ49_13605   Citrobacter braakii RHB08-E3-C01 WFV79430.1    
 NFJ61_13130   Citrobacter braakii RHB09-E4-C01 WFW15779.1    
 NFJ63_13410   Citrobacter braakii RHB09-SO-C07 WFW20249.1    
 NFJ78_12995   Citrobacter braakii RHB13-SO-C07 WFW67184.1    
 NFJ83_20715   Citrobacter braakii RHB14-SO-C08 WFW77245.1    
 NFJ83_13750   Citrobacter braakii RHB14-SO-C08 WFW75956.1    
 NFJ84_13705   Citrobacter braakii RHB16-E2-C02 WFW80747.1    
 NFJ84_24130   Citrobacter braakii RHB16-E2-C02 WFW82660.1    
 NFJ84_20430   Citrobacter braakii RHB16-E2-C02 WFW82000.1    
 NFJ89_12840   Citrobacter braakii RHB16-SO-C07 WFW99553.1    
 NFK10_19455 (fragment)   Citrobacter braakii RHB21-E1-C04 WFX66789.1    
 NFK10_19460 (fragment)   Citrobacter braakii RHB21-E1-C04 WFX66790.1    
 NFK10_13075   Citrobacter braakii RHB21-E1-C04 WFX65603.1    
 NFK19_03630   Citrobacter braakii RHB23-SO-C01 WFX95918.1    
 NFK19_10120   Citrobacter braakii RHB23-SO-C01 WFX97121.1    
 NFK21_10120   Citrobacter braakii RHB23-SO-C04 WFY06166.1    
 NFK21_03630   Citrobacter braakii RHB23-SO-C04 WFY04962.1    
 NFK28_14255   Citrobacter braakii RHB25-E4-C05 WFY29459.1    
 NFK30_20300   Citrobacter braakii RHB25-SO-C06 WFY35309.1    
 NFK30_13695   Citrobacter braakii RHB25-SO-C06 WFY34094.1    
 NFK67_03675   Citrobacter braakii RHB41-E2-C02 WFZ49126.1    
 NFK67_10115   Citrobacter braakii RHB41-E2-C02 WFZ50323.1    
 NFL11_20135   Citrobacter braakii RHB44-SE-C08 WGA83585.1    
 NFL11_13365   Citrobacter braakii RHB44-SE-C08 WGA82337.1    
 QN090_21370   Citrobacter braakii THB2 WIF76336.1    
 QN090_12730   Citrobacter braakii THB2 WIF74757.1    
 QN090_18680   Citrobacter braakii THB2 WIF75845.1    
 CI104_11645   Citrobacter farmeri AUSMDU00008141 AST79672.1    
 GOL70_13935   Citrobacter freundii 111 QLD36906.1    
 E4174_01240   Citrobacter freundii 154 QGJ49591.1    
 CFA70_05425   Citrobacter freundii 18-1 ASJ99693.1    
 E4177_20330   Citrobacter freundii 565 QGJ47838.1    
 GZS04_17515   Citrobacter freundii 62 QHX03743.1    
 E4179_16540   Citrobacter freundii 680 QGJ41815.1    
 CES93_15185   Citrobacter freundii 705SK3 ASG44884.1    
 AM348_19125   Citrobacter freundii AR_0021 ATX93593.1    
 AM349_02715   Citrobacter freundii AR_0022 ATX95074.1    
 AM350_20980   Citrobacter freundii AR_0023 AVD79976.1    
 AM363_13505   Citrobacter freundii AR_0116 AXZ47864.1    
 G4551_10065   Citrobacter freundii ATCC 8090 = MTCC 1658 = NBRC 12681 QIH68810.1    
 CfB38_2998   Citrobacter freundii B38 ANZ87913.1    
 C6Q34_21915   Citrobacter freundii B9-C2 AVQ93108.1    
 BTW28_20295   Citrobacter freundii BD APR33137.1    
 FR753_14495   Citrobacter freundii C50 QFH75796.1    
 AB180_08040   Citrobacter freundii CAV1321 AKL16969.1    
 AB183_25875   Citrobacter freundii CAV1741 AKL59182.1    
 E1A41_10360   Citrobacter freundii CAV1857 QBK98718.1    
 JW296_05090   Citrobacter freundii CF49969 QSB86879.1    
 CFNIH1_16075   Citrobacter freundii CFNIH1 AHY12982.1    
 CFNIH1_02485   Citrobacter freundii CFNIH1 AHY10422.1    
 CFNIH1_18610   Citrobacter freundii CFNIH1 AHY13466.1    
 CFNIH1_04365   Citrobacter freundii CFNIH1 AHY10773.1    
 GVI61_14360   Citrobacter freundii Cfr-13 QPO97647.1    
 H1014_14575   Citrobacter freundii CIFR51929 QMI74052.1    
 GZ999_13065   Citrobacter freundii CitB QJT76176.1    
 WM46_08230   Citrobacter freundii complex sp. CFNIH2 AUO64755.1    
 C2U38_03400   Citrobacter freundii complex sp. CFNIH3 AUV24770.1    
 C2U38_24665   Citrobacter freundii complex sp. CFNIH3 AUV28473.1    
 C2U38_13725   Citrobacter freundii complex sp. CFNIH3 AUV26594.1    
 C2U41_07165   Citrobacter freundii complex sp. CFNIH4 AUZ69152.1    
 C2U43_10445   Citrobacter freundii complex sp. CFNIH9 AUV43235.1    
 CU079_18150   Citrobacter freundii CRCB-101 ATX03394.1    
 FR864_14235   Citrobacter freundii E11 QFI11624.1    
 FR815_10175   Citrobacter freundii E33 QFH80170.1    
 FR801_14320   Citrobacter freundii E51 QFI28010.1    
 EGX89_23725   Citrobacter freundii FDAARGOS_549 AYY51389.1    
 EGY10_22670   Citrobacter freundii FDAARGOS_550 AYY46570.1    
 MC47_019980   Citrobacter freundii FDAARGOS_61 AUT97439.1    
 MC62_006775   Citrobacter freundii FDAARGOS_73 AUU25696.1    
 CUC52_06720   Citrobacter freundii HM38 AYL75188.1    
 HS089_13550   Citrobacter freundii IDR1800045912-01-00 QNB39968.1    
 HS092_10415   Citrobacter freundii IDR1900015725-01-02 QNB19762.1    
 GJV84_13965   Citrobacter freundii L75 QHD99204.1    
 GRP89_13440   Citrobacter freundii LDL3-3 QHD90984.1    
 HXS83_15210   Citrobacter freundii M92 QLD07732.1    
 CXM87_14600   Citrobacter freundii MGH279 QNM16678.1    
 CXM81_14600   Citrobacter freundii MGH281 QNM32063.1    
 CXM80_14600   Citrobacter freundii MGH281C QNM26831.1    
 CXM82_15865   Citrobacter freundii MGH283 QNM22142.1    
 F3114_14315   Citrobacter freundii N16-03880 QND09859.1    
 F3085_14060   Citrobacter freundii N18-04078 QNC99442.1    
 F3084_14080   Citrobacter freundii N18-04085 QNC94337.1    
 F3113_14290   Citrobacter freundii N18-04128 QNC74595.1    
 NCTC9750_02192 (Chia1_2) (fragment)   Citrobacter freundii NCTC9750 VDZ58861.1    
 NCTC9750_02191 (Chia1_1) (fragment)   Citrobacter freundii NCTC9750 VDZ58856.1    
 exo-chitinase X (CHI-X) 3.2.1.14 Citrobacter freundii P AGD94964.2
AGD94964.1
L7YAM9  
 P10159_0709 (Chia1)   Citrobacter freundii P10159 ALD75532.1    
 CITRO_2865   Citrobacter freundii PSV CAD5356717.1    
 EQ249_14610   Citrobacter freundii R17 QAT70778.1    
 FGF61_17620   Citrobacter freundii R47 QCW55919.1    
 HV101_14855   Citrobacter freundii RHBSTW-00153 QLN73614.1    
 HV178_13800   Citrobacter freundii RHBSTW-00370 QLV30985.1    
 HH198_13990   Citrobacter freundii SCAID PHRX1-2019 QJI73668.1    
 BFQ28_18725   Citrobacter freundii SL151 AOI31760.1    
 STW0522CIT01_07990   Citrobacter freundii STW0522-01 BBV29310.1    
 STW0522CIT01_38980   Citrobacter freundii STW0522-01 BBV32409.1    
 STW0522CIT01_27050   Citrobacter freundii STW0522-01 BBV31216.1    
 STW0522CIT01_22170   Citrobacter freundii STW0522-01 BBV30728.1    
 STW0522CIT01_06800   Citrobacter freundii STW0522-01 BBV29191.1    
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