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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)
Summary
Download GH18 (53976) Taxonomic display Structure (110 - 2 cryst) Characterized (431)
| 1 | 2 | 3 | 4 | 5 |
Bacteria
Protein Name EC#ReferenceOrganismGenBank UniprotPDB/3D
 chitinase 3.2.1.14 doi
 Ewingella americana PI98 CAA62151.1
ABD47744.1		 Q27SX4
Q59341		  
 chitinase (ChiA; Fjoh_4555) 3.2.1.14 pubmed
pubmed
 Flavobacterium johnsoniae UW101 ABQ07554.1 A5FB63  
 chitinase (ChiA; Fjoh_4555) 3.2.1.14 pubmed
pubmed
 Flavobacterium johnsoniae UW101 ABQ07554.1 A5FB63  
 chitinase (ChiB; FjChiB; Fjoh_4560) 3.2.1.14 pubmed
 Flavobacterium johnsoniae UW101 ABQ07559.1 A5FB54 6XYZ[A]
 endo-β-N-acetylglucosaminidase (Endo-Fsp) 3.2.1.96 pubmed
 Flavobacterium sp. SK1022 BAB20938.1
AAB20312.1		 P80036
Q9F1K1		  
 FTH_0088 (ChiB) 3.2.1.14 pubmed
 Francisella tularensis subsp. holarctica OSU18 ABI82135.1    
 FTH_1471 (ChiA) 3.2.1.14 pubmed
 Francisella tularensis subsp. holarctica OSU18 ABI83277.1    
 FTH_1579 (ChiC) 3.2.1.14 pubmed
 Francisella tularensis subsp. holarctica OSU18 ABI83369.1    
 chitinase A (ChiA;FTN_0627) 3.2.1.14 pubmed
 Francisella tularensis subsp. novicida U112 ABB76136.1
ABK89520.1
AJI60891.1		 A0Q5K5
Q09WI8		  
 chitinase B (ChiB;FTN_1744) 3.2.1.14 pubmed
 Francisella tularensis subsp. novicida U112 ABB76137.1
ABK90596.1
AJI60276.1		 A0Q8N1
Q09WI7		  
 FTT_1768c / FTT1768c (ChiB) 3.2.1.14 pubmed
 Francisella tularensis subsp. tularensis SCHU S4 CAG46401.1 Q5NE83  
 FTT_0715 / FTT0715 (ChiA) 3.2.1.14 pubmed
 Francisella tularensis subsp. tularensis SCHU S4 CAG45348.1 Q5NGW2  
 FTW_0313 (ChiC) 3.2.1.14 pubmed
 Francisella tularensis subsp. tularensis WY96-3418 ABO46262.1    
 chitinase (ChiA; ChiABhp; ChiJ; BH0916) 3.2.1.14 doi
 Halalkalibacterium halodurans C-125 BAB04635.1
NP_241782.1		 Q9KED7  
 chitinase A (ChiA) 3.2.1.14 pubmed
 Isoptericola jiangsuensis CLG ADD17350.1 D3YGV2  
 chitinase B (ChiB) 3.2.1.14 pubmed
 Isoptericola jiangsuensis CLG ADD17351.1 D3YGV3  
 chitinase (Chi69;Chi04) 3.2.1.14 pubmed
 Janthinobacterium lividum AAA83223.1
AAS19502.1
BAF02560.1		 Q48373
Q6QWH4		  
 chitinase (ChiA) 3.2.1.14 pubmed
 Kitasatospora aureofaciens CMUAC130 BAC66179.1 Q845S2  
 chitinase (ChiSH1) 3.2.1.14 doi
 Kurthia zopfii KI2-119 BAA09831.1 Q48494  
 surfactant-activated chitinase (ChiA;LpChiA) 3.2.1.14 pubmed
 Laceyella putida JAM-FM3001 BAO37115.1 W0T116  
 exo-chitinase (Cphy_1799; Cphy1799) 3.2.1.200 pubmed
 Lachnoclostridium phytofermentans ISDg ABX42168.1 A9KSD6  
 endo-chitinase (Cphy_1800;Cphy1800) 3.2.1.14 pubmed
 Lachnoclostridium phytofermentans ISDg ABX42169.1 A9KSD7  
 chitinase (ChiA;L9964) (Chi18A) 3.2.1.14 pubmed
 Lactococcus lactis subsp. lactis Il1403 AAK06048.1
NP_268107.1		 Q9CE95 3IAN[A]
 endochitinase (ChiA;lpl1121) 3.2.1.14 pubmed
 Legionella pneumophila str. Lens CAH15360.1 Q5WXH7  
 chitinase (ChiA;Lmo1883) 3.2.1.14 pubmed
 Listeria monocytogenes EGD-e CAC99961.1
NP_465407.1		 Q8Y619  
 chitinase (ChiB;Lmo0105) 3.2.1.14 pubmed
 Listeria monocytogenes EGD-e CAC98320.1
NP_463638.1		 Q8YAL3  
 chitinase A (ChiA) 3.2.1.14 pubmed
 Lysobacter enzymogenes C3 AAT77163.1
ALN56484.1		 Q6BCF8  
 chitinase 60 (Chi60;MmChi60) 3.2.1.14 pubmed
 Moritella marina CAM88673.1 B1VBB0 4HMC[A]
4HMD[A]
4HME[A]
4MB3[A]
4MB4[A]
4MB5[A]
4W5Z[A]
 chitinase (Chi1) 3.2.1.14 pubmed
 Niallia circulans C-2 AAF74782.1 Q9KHB3  
 chitinase (Chi41) 3.2.1.14 pubmed
 Niallia circulans NO. 4.1 AAF23368.1 Q9RG51  
 chitinase A1 (ChiA;ChiA1) 3.2.1.14 pubmed
 Niallia circulans WL-12 AAA81528.1 P20533 1ITX[A]
 chitinase C1 (ChiC) (fragment) 3.2.1.14 doi
 Niallia circulans WL-12 BAA13974.1 P94289  
 chitinase D (ChiD) 3.2.1.14 pubmed
 Niallia circulans WL-12 BAA34114.1 P27050  
 chitinase (ChiA) 3.2.1.14 pubmed
 Nocardiopsis prasina OPC-131 BAC45251.1 Q8GI54  
 exo-chitinase (Chi1; PbChi74) (GlcNAc-producing) 3.2.1.200
3.2.1.-		 pubmed
pubmed
 Paenibacillus barengoltzii CAU904 AIC64238.1 A0A060KSS6  
 chitinase (PbChi70; Chi2) 3.2.1.14 pubmed
 Paenibacillus barengoltzii CAU904 / CGMCC9530 AIT70967.1 A0A0F6NWE3  
 β-N-acetylglucosaminidase (PbNag39) 3.2.1.52 pubmed
 Paenibacillus barengoltzii CAU904 / CGMCC9530 QBO56278.1 A0A482G4C5 6INX[A]
 chitinase (Chi68;PeChi68) 3.2.1.14 pubmed
 Paenibacillus elgii HOA73 ARU77129.1 A0A1Y0JY52  
 chitinase (ChiC) 3.2.1.14 pubmed
 Paenibacillus sp. FPU-7 BAM67139.1 K7ZQB5  
 chitinase (ChiE) 3.2.1.14 pubmed
 Paenibacillus sp. FPU-7 BAM67141.1 K7ZK65  
 multi-modular chitinase (ChiW) 3.2.1.14 pubmed
pubmed
 Paenibacillus sp. FPU-7 BAM67143.1 K7ZLW6 5GZT[B]
5GZU[A,B]
5GZV[A,B]
 multi-modular chitinase (ChiW) 3.2.1.14 pubmed
pubmed
 Paenibacillus sp. FPU-7 BAM67143.1 K7ZLW6 5GZT[B]
5GZU[A,B]
5GZV[A,B]
 chitinase (ChiA) 3.2.1.14 pubmed
 Paenibacillus sp. FPU-7 BAM67137.1 K7ZS15  
 chitinase (ChiB) 3.2.1.14 pubmed
 Paenibacillus sp. FPU-7 BAM67138.1 K7ZLW5  
 chitinase (ChiD) 3.2.1.14 pubmed
 Paenibacillus sp. FPU-7 BAM67140.1 K7ZNA8  
 chitinase (ChiF) 3.2.1.14 pubmed
 Paenibacillus sp. FPU-7 BAM67142.1 K7ZS16  
 chitinase (fragment) 3.2.1.14   proteobacterium 12A ABE96872.1 A1XNE9  
 endochitinase Chi23 3.2.1.14 pubmed
 Pseudoalteromonas aurantia DSM 6057 QGN68168.1 A0A650AJ72 6K7Z[A,B,C,D]
 β-N-acetylglucosaminidase (chi22718_III;Orf2) 3.2.1.14 pubmed
 Pseudoalteromonas issachenkonii PAMC 22718 AGX85874.1 U5N424  
 chitinase A (ChiA) 3.2.1.200 pubmed
 Pseudoalteromonas piscicida O-7 BAA02908.1
BAB79620.1		 P32823  
 chitinase C (ChiC) 3.2.1.14 pubmed
 Pseudoalteromonas piscicida O-7 BAA24795.1 O50590  
 chitinase B (ChiB) 3.2.1.14 pubmed
 Pseudoalteromonas piscicida O-7 BAC53628.1 Q8GI52  
 chitinase D (ChiD) 3.2.1.200 pubmed
 Pseudoalteromonas piscicida O-7 BAB79618.1 Q8VLQ3  
 chitinase A (ChiA) 3.2.1.14 pubmed
 Pseudoalteromonas sp. S9 S91 AAC79665.1 Q9ZIX4  
 chitinase C (ChiC) 3.2.1.14 pubmed
 Pseudoalteromonas sp. S9 S91 AAC79667.1 Q9ZIX2  
 chitinase (Pachi) 3.2.1.14 pubmed
 Pseudomonas aeruginosa 0364 ALD59804.1 A0A0M4K3X3  
 chitinase (PaChi;PADK2_13770) 3.2.1.14 pubmed
 Pseudomonas aeruginosa DK2 AFM65035.1    
 chitinase (ChiC;PA2300) 3.2.1.14 pubmed
 Pseudomonas aeruginosa PAO1 AAG05688.1
AAK69491.1
ACQ33294.1
CAC27256.1
CAC27257.1
NP_250990.1		 G3XCM1
Q9I1H5		  
 chitinase 3.2.1.14 pubmed
 Pseudomonas sp. BK1 AAP79427.1 Q6X934  
 chitinase (PchA) 3.2.1.14 pubmed
 Pseudomonas sp. PE2 BAB79259.1 Q8VUU6  
 chitinase C (ChiC;PsChiC) 3.2.1.14 doi
 Pseudomonas sp. TxG6-1 ADW77630.1 V5IV80  
 chitinase (ChiA) 3.2.1.14 pubmed
 Rhodothermus marinus PRI378 AAU11838.1 Q66SU9  
 chitodextrinase 18A (CdxA;Sde_3982) (Cdx18A) 3.2.1.14 pubmed
 Saccharophagus degradans 2-40 AAO47607.1
ABD83237.1
ACG81705.1		 Q84AP8  
 endo/exo-chitinase 18B (ChiB;Sde_3870) (Chi18B) 3.2.1.14 pubmed
 Saccharophagus degradans 2-40 DAA01334.1
ABD83125.1
ACG81702.1		 Q7PC53  
 endo/exo-chitinase 18B (ChiB;Sde_3870) (Chi18B) 3.2.1.200 pubmed
 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 pubmed
 Saccharophagus degradans 2-40 DAA01336.1
ABD82860.1
ACG81703.1		 Q7PC51  
 chitinase 18A (Sde_1704; ChiA) (Chi18A) 3.2.1.14 pubmed
 Saccharophagus degradans 2-40 DAA01335.1
ABD80964.1
ACG81701.1		 Q7PC52  
 chitinase (ChiA2;SACE_1076) 3.2.1.14 pubmed
 Saccharopolyspora erythraea NRRL 2338 CAM00408.1 A4F8N3
P14529		  
 chitinase (ChiA;SL0018;SL1344_0018) 3.2.1.14 pubmed
 Salmonella enterica subsp. enterica serovar Typhimurium str. SL1344 CBW16119.1
CBW16119.2		 A0A0H3N7I6
E1W7P1		  
 endochitinase (Chi21702;Chi) 3.2.1.14 pubmed
 Sanguibacter antarcticus KOPRI 21702 ABD39718.1 C8XPA7  
 chitinase (Chit58;ChiA) 3.2.1.14 pubmed
 Sanguibacter sp. C4 ABB91448.1 Q2V9S9  
 chitinase C1 (ChiC) 3.2.1.14 pubmed
 Serratia marcescens 2170 BAA76623.1 Q9WXD3  
 chitinase A (ChiA;SmChiA) 3.2.1.201 pubmed
 Serratia marcescens 2170 / 27117 / BJL200 / ATCC990 / QMB1466 AAA26551.1
AAR10884.1
BAA31567.1
CAA27292.1
CAA85291.1		 O83008
P07254
Q6T6I1		 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]
5Z7M[A]
5Z7N[A]
5Z7O[A]
5Z7P[A]
 chitinase C (ChiC;SmChiC) 3.2.1.14 pubmed
 Serratia marcescens AS1.1652 AHN91474.1 X2KWS3  
 chitinase A (ChiA) 3.2.1.14 doi
 Serratia marcescens ATCC 990 AAW47932.1
ABI58232.1		 A6XFF7
Q5I4H6		  
 chitinase A1 (ChiA1) 3.2.1.14 doi
 Serratia marcescens AV305 AAF22480.1 Q9RH34  
 chitinase (Chit62) 3.2.1.14 pubmed
 Serratia marcescens B4A ADR30609.1 E5FGC5  
 chitinase B (ChiB;SmChiB) 3.2.1.14 pubmed
 Serratia marcescens BJL200 CAA85292.1 P11797
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]
6JK9[A,B]
6JKF[A,B]
7C34[A,B]
7C92[A,B]
 chitinase C / C1 (ChiC;ChiC1;SmChiC;SmChi18C) 3.2.1.14 pubmed
 Serratia marcescens BJL200 CAF74787.1 Q700B8 4AXN[A,B]
 chitinase A (ChiA) 3.2.1.14 pubmed
 Serratia marcescens BN10 AAZ86539.1 Q3Y4D2  
 chitinase A (ChiA) 3.2.1.14 pubmed
 Serratia marcescens GEI ACX42071.1 D0ELI2  
 chitinase B (ChiB) 3.2.1.14 pubmed
 Serratia marcescens GEI ACX42072.1 D0ELI3  
 chitinase C1 (Chic1) 3.2.1.14 pubmed
 Serratia marcescens GEI ACX42073.1 D0ELI4  
 chitinase B (ChiB) 3.2.1.14 doi
 Serratia marcescens Ha-Pink AHH32576.1    
 chitinase C (ChiC) 3.2.1.14 doi
 Serratia marcescens Ha-Pink AHH32577.1    
 chitinase A (ChiA) 3.2.1.14 doi
 Serratia marcescens Ha-Pink AHH32575.1    
 chitinase (ChiB;ChiBjp) 3.2.1.14 pubmed
 Serratia marcescens JPP1 AHZ63793.1 A0A059UJT0  
 chitinase 55kDa 3.2.1.14
3.2.1.200		 pubmed
pubmed
 Serratia marcescens KCTC2172 AAC37122.1 Q59929  
 chitinase C1 (ChiC;Chi52) 3.2.1.14 pubmed
 Serratia marcescens KCTC2172 AAC09387.1 Q54442  
 endochitinase A (ChiA) 3.2.1.14 pubmed
 Serratia marcescens NIMA AAS68517.1 Q6Q215  
 chitinase B (ChiB) 3.2.1.14 pubmed
 Serratia marcescens QMB1466 / BJL200 CAA33278.1
AAL57855.1
BAA31568.1		 A0A3E2ECF9
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 pubmed
 Serratia plymuthica CAD32933.1 Q8KKF5  
 chitinase 3.2.1.14 pubmed
 Serratia plymuthica IC1270 AAB49933.1 P97034  
 chitinase A (ChiA;SpChiA;Spro_0137) 3.2.1.14 pubmed
 Serratia proteamaculans 568 ABV39247.1 A8G807  
 chitinase B (ChiB;SpChiB;Spro_1223) 3.2.1.14 pubmed
 Serratia proteamaculans 568 ABV40327.1 A8GB37  
 chitinase D (ChiD;SpChiD;Spro_2725) 3.2.1.14 pubmed
 Serratia proteamaculans 568 ABV41826.1 A8GFD6 4LGX[A]
4NZC[A]
4PTM[A]
4Q22[A]
6F8N[A,B]
6HM1[A]
 chitinase C (ChiC;SpChiC;Spro_3476) 3.2.1.14 pubmed
 Serratia proteamaculans 568 ABV42574.1 A8GHI4  
 exochitinase (ChiA) 3.2.1.14 pubmed
 Serratia sp. KCK ABM69267.1 A2TC68  
 chitinase (Chi60) 3.2.1.201 pubmed
 Serratia sp. TU09 AAK72610.2 Q93LF1  
 chitinase A (ChiA) 3.2.1.14 pubmed
 Stenotrophomonas maltophilia 34S1 AAB70917.1 O30678  
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