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 (15610); Uniprot accession (3282); PDB accession (318); 3D entries (84); cryst (4)
All (14070) Archaea (61) Bacteria (10316) Eukaryota (3181) Viruses (261) unclassified (251) Structure (84 - 4 cryst) Characterized (477)
| 1 | ... | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | ... | 32 |
Eukaryota
Protein Name EC#OrganismGenBank UniprotPDB/3D
 chitinase 2   Cucumis melo AMP41495.1
ANB86007.1
   
 chitinase 1 (fragment)   Cucumis melo AMP41494.1
ANB86002.1
ANB86006.1
   
 chitinase (ChT)   Cucumis melo ANB86005.1    
 chitinase 2 (Cht2)   Cucumis melo ANB86003.1    
 chitinase 1 3.2.1.14 Cucumis melo AAF64474.1 Q9M544  
 family 18 chitinase (fragment)   Cucumis melo var. saccharinus APF47213.1    
 chitinase 3.2.1.14 Cucumis sativus AAA33120.1
AAC37395.1
ABK55716.2
ADG56718.1
ALT53700.1
P17541  
 ORF1   Cucumis sativus AAC37394.1 Q39656  
 ORF3   Cucumis sativus AAC37396.1 Q39657  
 acidic class III chitinase   Cucurbita maxima AIM62181.1    
 chitinase (PLC) 3.2.1.14 Cucurbita moschata AAD53006.1 Q9SQI0  
 Chi1 (fragment)   Cutaneotrichosporon cutaneum DSM 70675 AAX59703.1 Q2TIM2  
 CYFA0S_11e00892g   Cyberlindnera fabianii YJS4271 CDR43160.1    
 CYFA0S_11e01992g   Cyberlindnera fabianii YJS4271 CDR43229.1    
 CYFA0S_29e01068g   Cyberlindnera fabianii YJS4271 CDR47159.1    
 chitinase A (ChiA;CrChiA;CrChi-A) 3.2.1.14 Cycas revoluta BAD98525.1 Q4W6L6 3WIJ[A]
4MNJ[A]
4MNK[A]
4MNL[A]
4MNM[A]
4R5E[A]
 chitinase, partial (fragment)   Cyclophora punctaria ANT95794.1    
 pathogenesis related protein 3, partial (Pr3-ch3) (fragment)   Cydonia oblonga AFM77007.1    
 pathogenesis related protein 3, partial (Pr3-ch3) (fragment)   Cydonia oblonga AFM77006.1    
 Pr8   Cydonia oblonga AFQ23971.1    
 Pr8   Cydonia oblonga AFQ23973.1    
 pathogenesis-related protein 3 (Pr3)   Cydonia oblonga AFV46125.1    
 pathogenesis-related protein 3 (Pr3)   Cydonia oblonga AFV46126.1    
 class III endochitinase   Dactylis glomerata AET86622.2    
 Zgc:65788 (CHIA.6)   Danio rerio AAH56337.1
AAH46004.1
AAH65583.1
NP_955897.1
Q6PHU7
Q7ZV48
 
 Zgc:55406 (CHIA.3)   Danio rerio AAH65893.1
AAH45331.1
Q6NZZ8  
 Zgc:56053 (CHIA.1)   Danio rerio AAH45887.1
AAI65730.1
Q7ZVF1  
 Zgc:55941 (CHIA.2)   Danio rerio AAH44549.1
AAH65885.1
Q803B7  
 Zgc:63792 (ChiA;CHIA.4)   Danio rerio AAH54942.1
AAQ97758.1
NP_956740.1
Q7SYA8  
 Zgc:109937 (CTBS)   Danio rerio AAH72723.2
AAH72723.1
AAH95064.1
AAI64759.1
Q6GQL9  
 Zgc:173927 (CHIA.5)   Danio rerio AAI53463.1
AAI71633.1
A8E550  
 chitinase 15, partial (fragment)   Daphnia arenata AFI40013.1    
 chitinase 16, partial (fragment)   Daphnia arenata AFI40033.1    
 chitinase 1, partial (fragment)   Daphnia arenata AFI40035.1    
 chitinase 9, partial (fragment)   Daphnia arenata AFI40049.1    
 chitinase 17, partial (fragment)   Daphnia arenata AFI40060.1    
 chitinase 15, partial (fragment)   Daphnia parvula AFI40004.1    
 chitinase 15, partial (fragment)   Daphnia parvula AFI40014.1    
 chitinase 15, partial (fragment)   Daphnia parvula AFI40018.1    
 chitinase 16, partial (fragment)   Daphnia parvula AFI40027.1
AFI40028.1
   
 chitinase 16, partial (fragment)   Daphnia parvula AFI40029.1    
 chitinase 16, partial (fragment)   Daphnia parvula AFI40030.1    
 chitinase 17, partial (fragment)   Daphnia parvula AFI40053.1
AFI40054.1
   
 chitinase 17, partial (fragment)   Daphnia parvula AFI40062.1    
 chitinase 15, partial (fragment)   Daphnia pulex AFI40005.1    
 chitinase 15, partial (fragment)   Daphnia pulex AFI40006.1    
 chitinase 15, partial (fragment)   Daphnia pulex AFI40007.1    
 chitinase 15, partial (fragment)   Daphnia pulex AFI40008.1    
 chitinase 15, partial (fragment)   Daphnia pulex AFI40009.1    
 chitinase 15, partial (fragment)   Daphnia pulex AFI40010.1    
 chitinase 15, partial (fragment)   Daphnia pulex AFI40011.1    
 chitinase 15, partial (fragment)   Daphnia pulex AFI40012.1    
 chitinase 15, partial (fragment)   Daphnia pulex AFI40015.1    
 chitinase 15, partial (fragment)   Daphnia pulex AFI40016.1    
 chitinase 15, partial (fragment)   Daphnia pulex AFI40017.1    
 chitinase 16, partial (fragment)   Daphnia pulex AFI40019.1    
 chitinase 16, partial (fragment)   Daphnia pulex AFI40020.1
AFI40023.1
AFI40024.1
   
 chitinase 16, partial (fragment)   Daphnia pulex AFI40021.1    
 chitinase 16, partial (fragment)   Daphnia pulex AFI40022.1
AFI40026.1
AFI40031.1
   
 chitinase 16, partial (fragment)   Daphnia pulex AFI40025.1    
 chitinase 16, partial (fragment)   Daphnia pulex AFI40032.1    
 chitinase 16, partial (fragment)   Daphnia pulex AFI40034.1    
 chitinase 1, partial (fragment)   Daphnia pulex AFI40036.1    
 chitinase 1, partial (fragment)   Daphnia pulex AFI40037.1    
 chitinase 1, partial (fragment)   Daphnia pulex AFI40038.1
AFI40039.1
   
 chitinase 1, partial (fragment)   Daphnia pulex AFI40040.1    
 chitinase 1, partial (fragment)   Daphnia pulex AFI40041.1    
 chitinase 1, partial (fragment)   Daphnia pulex AFI40042.1    
 chitinase 1, partial (fragment)   Daphnia pulex AFI40043.1    
 chitinase 9, partial (fragment)   Daphnia pulex AFI40044.1    
 chitinase 9, partial (fragment)   Daphnia pulex AFI40045.1    
 chitinase 9, partial (fragment)   Daphnia pulex AFI40046.1    
 chitinase 9, partial (fragment)   Daphnia pulex AFI40047.1    
 chitinase 9, partial (fragment)   Daphnia pulex AFI40048.1    
 chitinase 9, partial (fragment)   Daphnia pulex AFI40050.1    
 chitinase 17, partial (fragment)   Daphnia pulex AFI40051.1    
 chitinase 17, partial (fragment)   Daphnia pulex AFI40052.1    
 chitinase 17, partial (fragment)   Daphnia pulex AFI40055.1    
 chitinase 17, partial (fragment)   Daphnia pulex AFI40056.1    
 chitinase 17, partial (fragment)   Daphnia pulex AFI40057.1    
 chitinase 17, partial (fragment)   Daphnia pulex AFI40058.1    
 chitinase 17, partial (fragment)   Daphnia pulex AFI40059.1    
 chitinase 17, partial (fragment)   Daphnia pulex AFI40061.1    
 chitinase 17, partial (fragment)   Daphnia pulex AFI40063.1    
 chitinase 17, partial (fragment)   Daphnia pulex AFI40064.1    
 chitinase, partial (DachI) (fragment)   Dasyatis akajei BBC21794.1    
 ORF (fragment)   Debaryomyces hansenii 4e AUG89702.1    
 ORF   Debaryomyces hansenii 5c APZ80121.1    
 ORF (fragment)   Debaryomyces hansenii 7g APZ80115.1    
 Orf2   Debaryomyces hansenii CBS 770 AET14259.1    
 DEHA0D01540g   Debaryomyces hansenii CBS767 CAG86633.1 Q6BTF9  
 DEHA0B11594g (fragment)   Debaryomyces hansenii CBS767 CAG85451.1 Q6BWH2  
 DEHA0G06655g   Debaryomyces hansenii CBS767 CAG90268.1 Q6BJ14  
 DEHA0G09636g   Debaryomyces hansenii CBS767 CAG90400.1 Q6BIN9  
 DEHA0F18073g   Debaryomyces hansenii CBS767 CAG89465.1 Q6BL38  
 chitin binding protein   Debaryomyces robertsiae CBS6693 CAE84954.1 Q707V9  
 unknown   Dendroctonus ponderosae AEE62025.1    
 unknown   Dendroctonus ponderosae AEE63602.1    
 unknown (fragment)   Dendroctonus ponderosae AEE61812.1    
 60 kDa chitinase allergen (Der f 18;Derf18)   Dermatophagoides farinae CAD35270.1
AAM19082.1
CAD35269.1
CAD35271.1
Q86R84  
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