Glycoside Hydrolase Family 18

Activities in Familychitinase (EC 3.2.1.14); lysozyme (EC 3.2.1.17); endo-β-N-acetylglucosaminidase (EC 3.2.1.96); peptidoglycan hydrolase with endo-β-N-acetylglucosaminidase specificity (EC 3.2.1.-); Nod factor hydrolase (EC 3.2.1.-); xylanase inhibitor; concanavalin B; narbonin
Mechanism Retaining
ClanGH-K
3D Structure Status( β / α ) 8
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)NZYTech; PROZOMIX;
Statistics GenBank accession (14721); Uniprot accession (3282); PDB accession (301); 3D entries (77); cryst (4)
All (13178) Archaea (61) Bacteria (9567) Eukaryota (3057) Viruses (256) unclassified (237) Structure (77 - 4 cryst) Characterized (477)
| 1 | 2 | 3 | 4 | 5 |
Bacteria
Protein Name EC#OrganismGenBank UniprotPDB/3D
 endo-N-glycosidase (EndoE;EF0114) 3.2.1.52
3.2.1.96
Enterococcus faecalis V583 AAO79989.1
AAR59795.1
NP_813917.1
Q839P8  
 chtinase (EfChi18A;EF0361) (Chi18A) 3.2.1.14 Enterococcus faecalis V583 AAO80224.1
NP_814153.1
Q838S2  
 endo-β-N-acetylglucosaminidase (EfEndo18A;EF2863) (Endo18A) 3.2.1.96 Enterococcus faecalis V583 AAO82555.1
NP_816485.1
Q830C5  
 endochitinase (ChiA;YheB;b3338) 3.2.1.14 Escherichia coli str. K-12 substr. MG1655 AAC76363.1
AAA58135.1
AIZ89659.1
ALI38980.1
AMC96225.1
NP_417797.1
P13656  
 chitinase 3.2.1.14 Ewingella americana PI98 CAA62151.1
ABD47744.1
Q59341  
 chitinase (ChiA;Fjoh_4555) 3.2.1.14
3.2.1.14
Flavobacterium johnsoniae UW101 ABQ07554.1 A5FB63  
 chitinase (ChiA;Fjoh_4555) 3.2.1.14
3.2.1.14
Flavobacterium johnsoniae UW101 ABQ07554.1 A5FB63  
 endo-β-N-acetylglucosaminidase (Endo-Fsp) 3.2.1.96 Flavobacterium sp. SK1022 BAB20938.1
AAB20312.1
P80036
Q9F1K1
 
 chitinase A (ChiA;FTN_0627) 3.2.1.14 Francisella tularensis subsp. novicida U112 ABB76136.1
ABK89520.1
AJI60891.1
A0Q5K5
Q09WI8
 
 chitinase B (ChiB;FTN_1744) 3.2.1.14 Francisella tularensis subsp. novicida U112 ABB76137.1
ABK90596.1
AJI60276.1
Q09WI7  
 chitinase A (ChiA) 3.2.1.14 Isoptericola jiangsuensis CLG ADD17350.1 D3YGV2  
 chitinase B (ChiB) 3.2.1.14 Isoptericola jiangsuensis CLG ADD17351.1 D3YGV3  
 chitinase (Chi69;Chi04) 3.2.1.14 Janthinobacterium lividum AAA83223.1
AAS19502.1
BAF02560.1
Q48373
Q6QWH4
 
 lytic chitin monooxygenase / chitinase (Jden_1381)(JdLPMO10A) (LPMO10A) 1.-.-.- Jonesia denitrificans DSM 20603 ACV09037.1 C7R4I0  
 chitinase (ChiA) 3.2.1.14 Kitasatospora aureofaciens CMUAC130 BAC66179.1 Q845S2  
 chitinase (ChiSH1) 3.2.1.14 Kurthia zopfii KI2-119 BAA09831.1 Q48494  
 surfactant-activated chitinase (ChiA;LpChiA) 3.2.1.14 Laceyella putida JAM-FM3001 BAO37115.1    
 exo-chitinase (Cphy_1799;Cphy1799) 3.2.1.- Lachnoclostridium phytofermentans ISDg ABX42168.1 A9KSD6  
 endo-chitinase (Cphy_1800;Cphy1800) 3.2.1.14 Lachnoclostridium phytofermentans ISDg ABX42169.1 A9KSD7  
 chitinase (ChiA;L9964) (Chi18A) 3.2.1.14 Lactococcus lactis subsp. lactis Il1403 AAK06048.1
NP_268107.1
Q9CE95 3IAN[A]
 endochitinase (ChiA;lpl1121) 3.2.1.14 Legionella pneumophila str. Lens CAH15360.1 Q5WXH7  
 endochitinase (ChiA;lpp1117) 3.2.1.14 Legionella pneumophila str. Paris CAH12268.1 Q5X653  
 endochitinase (ChiA;lpg1116) 3.2.1.14 Legionella pneumophila subsp. pneumophila str. Philadelphia 1 AAU27202.1
AGH54150.1
Q5ZWG9  
 chitinase (ChiA;Lmo1883) 3.2.1.14 Listeria monocytogenes EGD-e CAC99961.1
NP_465407.1
Q8Y619  
 chitinase (ChiB;Lmo0105) 3.2.1.14 Listeria monocytogenes EGD-e CAC98320.1
NP_463638.1
Q8YAL3  
 chitinase A (ChiA) 3.2.1.14 Lysobacter enzymogenes C3 AAT77163.1
ALN56484.1
Q6BCF8  
 chitinase 60 (Chi60;MmChi60) 3.2.1.14 Moritella marina CAM88673.1 B1VBB0 4HMC[A]
4HMD[A]
4HME[A]
4MB3[A]
4MB4[A]
4MB5[A]
4W5Z[A]
 chitinase (ChiA) 3.2.1.14 Nocardiopsis prasina OPC-131 BAC45251.1 Q8GI54  
 exo-chitinase (Chi1;PbChi74) (GlcNAc-producing) 3.2.1.- Paenibacillus barengoltzii CAU904 AIC64238.1    
 chitinase (Chi55) 3.2.1.14 Paenibacillus ehimensis EAG3 BAC76692.1 Q7X5M0  
 chitinase (Chi68;PeChi68) 3.2.1.14 Paenibacillus elgii HOA73 ARU77129.1    
 multi-modular chitinase (ChiW) 3.2.1.14 Paenibacillus sp. FPU-7 BAM67143.1   5GZT[B]
5GZU[A,B]
5GZV[A,B]
 multi-modular chitinase (ChiW) 3.2.1.14 Paenibacillus sp. FPU-7 BAM67143.1   5GZT[B]
5GZU[A,B]
5GZV[A,B]
 chitinase (ChiF) 3.2.1.14 Paenibacillus sp. FPU-7 BAM67142.1    
 chitinase (fragment) 3.2.1.14 proteobacterium 12A ABE96872.1 A1XNE9  
 chitinase A (ChiA) 3.2.1.14 Pseudoalteromonas piscicida O-7 BAA02908.1
BAB79620.1
P32823  
 chitinase C (ChiC) 3.2.1.14 Pseudoalteromonas piscicida O-7 BAA24795.1 O50590  
 chitinase D (ChiD) 3.2.1.- Pseudoalteromonas piscicida O-7 BAB79618.1 Q8VLQ3  
 chitinase A (ChiA) 3.2.1.14 Pseudoalteromonas sp. S9 / S91 AAC79665.1 Q9ZIX4  
 chitinase C (ChiC) 3.2.1.14 Pseudoalteromonas sp. S9 / S91 AAC79667.1 Q9ZIX2  
 chitinase (Pachi) 3.2.1.14 Pseudomonas aeruginosa 0364 ALD59804.1    
 chitinase (PaChi;PADK2_13770) 3.2.1.14 Pseudomonas aeruginosa DK2 AFM65035.1    
 chitinase (ChiC;PA2300) 3.2.1.14 Pseudomonas aeruginosa PAO1 AAG05688.1
AAK69491.1
ACQ33294.1
CAC27256.1
CAC27257.1
NP_250990.1
Q9I1H5  
 chitinase 3.2.1.14 Pseudomonas sp. BK1 AAP79427.1 Q6X934  
 chitinase (PchA) 3.2.1.14 Pseudomonas sp. PE2 BAB79259.1 Q8VUU6  
 chitinase C (ChiC;PsChiC) 3.2.1.14 Pseudomonas sp. TxG6-1 ADW77630.1    
 chitinase (ChiA) 3.2.1.14 Rhodothermus marinus PRI378 AAU11838.1 Q66SU9  
 chitinase A (ChiA; Cthe_0270) (Chi18A) 3.2.1.14 Ruminiclostridium thermocellum ATCC 27405 CAA93150.1
ABN51509.1
Q59326  
 chitodextrinase 18A (CdxA;Sde_3982) (Cdx18A) 3.2.1.14 Saccharophagus degradans 2-40 AAO47607.1
ABD83237.1
ACG81705.1
Q84AP8  
 endo/exo-chitinase 18B (ChiB;Sde_3870) (Chi18B) 3.2.1.14
3.2.1.-
Saccharophagus degradans 2-40 DAA01334.1
ABD83125.1
ACG81702.1
Q7PC53  
 endo/exo-chitinase 18B (ChiB;Sde_3870) (Chi18B) 3.2.1.14
3.2.1.-
Saccharophagus degradans 2-40 DAA01334.1
ABD83125.1
ACG81702.1
ACG81709.1
ACG81710.1
Q7PC53  
 chitinase 18C (ChiC;Sde_3605) (Chi18C) 3.2.1.14 Saccharophagus degradans 2-40 DAA01336.1
ABD82860.1
ACG81703.1
Q7PC51  
 chitinase 18A (Sde_1704; ChiA) (Chi18A) 3.2.1.14 Saccharophagus degradans 2-40 DAA01335.1
ABD80964.1
ACG81701.1
Q7PC52  
 chitinase (ChiA2;SACE_1076) 3.2.1.14 Saccharopolyspora erythraea NRRL 2338 CAM00408.1 A4F8N3
P14529
 
 chitinase (ChiA;SL0018;SL1344_0018) 3.2.1.14 Salmonella enterica subsp. enterica serovar Typhimurium str. SL1344 CBW16119.1
CBW16119.2
E1W7P1  
 endochitinase (Chi21702;Chi) 3.2.1.14 Sanguibacter antarcticus KOPRI 21702 ABD39718.1 C8XPA7  
 chitinase (Chit58;ChiA) 3.2.1.14 Sanguibacter sp. C4 ABB91448.1 Q2V9S9  
 chitinase C1 (ChiC) 3.2.1.14 Serratia marcescens 2170 BAA76623.1 Q9WXD3  
 chitinase A (ChiA;SmChiA) 3.2.1.14 Serratia marcescens 2170 / 27117 / BJL200 / ATCC990 / QMB1466 AAA26551.1
AAR10884.1
BAA31567.1
CAA27292.1
CAA85291.1
O83008
P07254
1CTN[A]
1EDQ[A]
1EHN[A]
1EIB[A]
1FFQ[A]
1FFR[A]
1K9T[A]
1NH6[A]
1RD6[A]
1X6L[A]
1X6N[A]
2WK2[A]
2WLY[A]
2WLZ[A]
2WM0[A]
 chitinase C (ChiC;SmChiC) 3.2.1.14 Serratia marcescens AS1.1652 AHN91474.1    
 chitinase A (ChiA) 3.2.1.14 Serratia marcescens ATCC 990 AAW47932.1
ABI58232.1
Q5I4H6  
 chitinase A1 (ChiA1) 3.2.1.14 Serratia marcescens AV305 AAF22480.1 Q9RH34  
 chitinase (Chit62) 3.2.1.14 Serratia marcescens B4A ADR30609.1    
 chitinase B (ChiB;SmChiB) 3.2.1.14 Serratia marcescens BJL200 CAA85292.1 Q54276 1E15[A,B]
1E6N[A,B]
1E6P[A,B]
1E6R[A,B]
1E6Z[A,B]
1GOI[A,B]
1GPF[A,B]
1O6I[A,B]
1OGB[A,B]
1OGG[A,B]
1UR8[A,B]
1UR9[A,B]
1W1P[A,B]
1W1T[A,B]
1W1V[A,B]
1W1Y[A,B]
 chitinase C / C1 (ChiC;ChiC1;SmChiC;SmChi18C) 3.2.1.14 Serratia marcescens BJL200 CAF74787.1 Q700B8 4AXN[A,B]
 chitinase A (ChiA) 3.2.1.14 Serratia marcescens BN10 AAZ86539.1 Q3Y4D2  
 chitinase A (ChiA) 3.2.1.14 Serratia marcescens GEI ACX42071.1 D0ELI2  
 chitinase B (ChiB) 3.2.1.14 Serratia marcescens GEI ACX42072.1 D0ELI3  
 chitinase C1 (Chic1) 3.2.1.14 Serratia marcescens GEI ACX42073.1 D0ELI4  
 chitinase (ChiB;ChiBjp) 3.2.1.14 Serratia marcescens JPP1 AHZ63793.1    
 chitinase 55kDa 3.2.1.14
3.2.1.-
Serratia marcescens KCTC2172 AAC37122.1 Q59929  
 chitinase C1 (ChiC;Chi52) 3.2.1.14 Serratia marcescens KCTC2172 AAC09387.1 Q54442  
 endochitinase A (ChiA) 3.2.1.14 Serratia marcescens NIMA AAS68517.1 Q6Q215  
 chitinase B (ChiB) 3.2.1.14 Serratia marcescens QMB1466 / BJL200 CAA33278.1
AAL57855.1
BAA31568.1
P11797
Q547S1
1H0G[A,B]
1H0I[A,B]
3WD0[A]
3WD1[A]
3WD2[A]
3WD3[A]
3WD4[A]
4Z2G[A]
4Z2H[A]
4Z2I[A]
4Z2J[A]
4Z2K[A]
4Z2L[A]
 chitinase (Chit60) 3.2.1.14 Serratia plymuthica CAD32933.1 Q8KKF5  
 chitinase 3.2.1.14 Serratia plymuthica IC1270 AAB49933.1 P97034  
 chitinase A (ChiA;SpChiA;Spro_0137) 3.2.1.14 Serratia proteamaculans 568 ABV39247.1 A8G807  
 chitinase B (ChiB;SpChiB;Spro_1223) 3.2.1.14 Serratia proteamaculans 568 ABV40327.1 A8GB37  
 chitinase D (ChiD;SpChiD;Spro_2725) 3.2.1.14 Serratia proteamaculans 568 ABV41826.1 A8GFD6 4LGX[A]
4NZC[A]
4PTM[A]
4Q22[A]
 chitinase C (ChiC;SpChiC;Spro_3476) 3.2.1.14 Serratia proteamaculans 568 ABV42574.1 A8GHI4  
 exochitinase (ChiA) 3.2.1.14 Serratia sp. KCK ABM69267.1 A2TC68  
 chitinase (Chi60) 3.2.1.14 Serratia sp. TU09 AAK72610.2 Q93LF1  
 chitinase A (ChiA) 3.2.1.14 Stenotrophomonas maltophilia 34S1 AAB70917.1 O30678  
 chitinase A (ChiA;StmChiA;Smlt0682) 3.2.1.14 Stenotrophomonas maltophilia K279a CAQ44264.1 B2FMT1  
 chitinase B (ChiB;StmChib;Smlt3383) 3.2.1.14 Stenotrophomonas maltophilia K279a CAQ46811.1 B2FN84  
 IgG-deglycosylating hydrolase (EndoSe;SEQ_0432) 3.2.1.- Streptococcus equi subsp. equi 4047 CAW92602.1 C0M680  
 endo-β-N-acetylglucosaminidase S (EndoS;NdoS;Endo S) 3.2.1.96 Streptococcus pyogenes 40/58 AP1 AAK00850.1 Q9APG4 cryst
 endo-β-N-acetylglucosaminidase S (NdoS;EndoS;SPy1813) 3.2.1.96 Streptococcus pyogenes M1 GAS AAK34539.1
NP_269818.1
Q99Y92  
 endo-β-N-acetylglucosaminidase (EndoS;M5005_Spy_1540) 3.2.1.96 Streptococcus pyogenes MGAS5005 AAZ52158.1   4NUY[A]
4NUZ[A]
 endo-β-1,4-N-acetylglucosamine (NdoS2;EndoS2;EndoS49;Spy49_1414c) 3.2.1.96 Streptococcus pyogenes NZ131 ACI61688.1 B5XI26  
 chitinase H (ChiH;Chi18cH;SCO6012;SC7B7.09c) (Chi18H) 3.2.1.14 Streptomyces coelicolor A3(2) CAA15789.1
NP_630126.1
O50506  
 chitinase A (ChiA;Chi18bA;SCK15.05c;SCO5003) (Chi18A) 3.2.1.14 Streptomyces coelicolor A3(2) CAB92596.1
BAA75642.1
NP_629155.1
Q9KY99
Q9Z9M9
3EBV[A]
 chitinase C (ChiC;Chi18aC;ScChiC;2SC6G5.20c;SCO5376) (Chi18C) 3.2.1.14 Streptomyces coelicolor A3(2) CAB94547.1
AAD16453.1
BAA75644.1
NP_629515.1
Q7AKG2
Q9Z9M8
 
 chitinase D (ChiD;Chi18aD;SCO1429) (Chi18D) 3.2.1.14 Streptomyces coelicolor A3(2) CAB61662.1
BAA75645.1
NP_625711.1
Q7AKQ9
Q9Z9M7
 
 chitinase (ChiA) 3.2.1.14 Streptomyces griseobrunneus S3 ABP88958.1 A4ZVE5  
 chitinase I (Chi I) 3.2.1.14 Streptomyces griseus HUT 6037 BAB86375.1 Q8RQP8  
 chitinase II (Chi II) 3.2.1.14 Streptomyces griseus HUT 6037 BAB86376.1 Q8RQP7  
 chitinase III (ChiIII;Chi III) 3.2.1.14 Streptomyces griseus HUT 6037 BAB86377.1 Q8RQP6  
 chitinase B (ChiB) 3.2.1.14 Streptomyces lividans 1326 BAA25139.1 O69311  
 chitinase A (ChiA) 3.2.1.14 Streptomyces lividans TK64 BAA02918.1 Q59924  
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