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 | 6 | 7 | 8 | 9 | ... | 31 |
Eukaryota
Protein Name EC#OrganismGenBank UniprotPDB/3D
 class III chitinase (Chit3)   Acacia koa AFY08286.1    
 ORF (fragment)   Acanthamoeba castellanii ABD72566.1 Q207U9  
 chitinase I 3.2.1.14 Acanthocheilonema viteae AAB68959.1
AAA87227.1
AAC47022.1
ABK42000.1
Q17100
Q27919
 
 chitinase III   Acanthocheilonema viteae ABK42001.1 A0MWE1  
 chitinase (AsChi-1)   Acanthopagrus schlegelii BAU16295.1    
 secreted protein   Achlya hypogyna ATCC 48635 AIG55971.1    
 secreted protein   Achlya hypogyna ATCC 48635 AIG55989.1    
 secreted protein   Achlya hypogyna ATCC 48635 AIG56034.1    
 secreted protein   Achlya hypogyna ATCC 48635 AIG56062.1    
 secreted protein   Achlya hypogyna ATCC 48635 AIG56507.1    
 secreted protein   Achlya hypogyna ATCC 48635 AIG55900.1    
 ORF   Achlya hypogyna ATCC 48635 AIG56010.1    
 Chi1 (fragment)   Achlya racemosa CBS 578.67 AAX59707.1 Q2TIL8  
 ACYPI001365 (fragment)   Acyrthosiphon pisum LSR1 BAH72071.1 C4WW01  
 chitinase, partial (fragment)   Adscita statices ANT95801.1    
 imaginal disk growth factor protein 4 (fragment)   Aedes aegypti AAW21998.1 Q5MM84  
 chitinase   Aedes aegypti AAZ39947.1 Q45KG6  
 chitinase 1 (Cht1) 3.2.1.14 Aedes aegypti AAB81849.1 O17411  
 chitinase 2 (Cht2) 3.2.1.14 Aedes aegypti AAB81850.1 O17412  
 chitinase 2 (Cht2) 3.2.1.14 Aedes aegypti AAB81850.1 O17412  
 chitinase 2 (Cht2) 3.2.1.14 Aedes aegypti AAB81850.1 O17412  
 bacteriα-responsive protein 1 AgBR1   Aedes aegypti ABF18180.1 Q1HRE7  
 chitinase 3 (Chi3)   Aegiceras corniculatum AFK26309.1    
 chitinase (AcChI-H)   Agrius convolvuli BAE16588.1 Q4AE58  
 chitinase   Agrotis ipsilon ACQ73745.1 C4P7I5  
 chitinase   Agrotis ipsilon ABW03227.1
ACD47163.1
B0LF75  
 ALNC14_028930 (Alnc14c25g2494)   Albugo laibachii Nc14 CCA16750.1    
 ALNC14_135940 (Alnc14c536g12090)   Albugo laibachii Nc14 CCA27450.1    
 chitinase, partial (fragment)   Alucita hexadactyla ANT95804.1    
 endochitinase (Chit1) (probable fragment)   Amanita muscaria AM83 CAC35202.1 Q9C199  
 ORF   Amblyomma americanum AIR95100.1    
 ORF (fragment)   Amblyomma americanum AIR95099.1    
 ORF   Amblyomma maculatum AEO36431.1    
 ORF   Amblyomma maculatum AEO36445.1    
 ORF (fragment)   Amblyomma maculatum AEO32390.1    
 ORF (fragment)   Amblyomma maculatum AEO32718.1    
 ORF   Amblyomma maculatum AEO36610.1    
 chitinase A (ChiA;PlChiA) 3.2.1.14 Ananas comosus BAG38685.1 B3A042  
 chitinase (CHT1) (fragment)   Anopheles freeborni AAB81853.1 O17415  
 chitinase (CHT2) (fragment)   Anopheles freeborni AAB81854.1 O17416  
 chitinase 1 (AgChi-1) 3.2.1.14 Anopheles gambiae AAB87764.1 O44079  
 chitinase (CHT2) (fragment)   Anopheles gambiae AAB81851.1 O17413  
 chitinase (CHT3) (fragment)   Anopheles gambiae AAB81852.1 O17414  
 chitinase 5-1 (Cht5-1)   Anopheles gambiae AEE44123.1    
 chitinase 5-2 (Cht5-2)   Anopheles gambiae AEE44124.1    
 chitinase 5-3 (Cht5-3)   Anopheles gambiae AEE44125.1    
 chitinase 5-4 (Cht5-4)   Anopheles gambiae AEE44126.1    
 chitinase 5-5 (Cht5-5)   Anopheles gambiae AEE44127.1    
 bacteria responsive protein 1; AgBR1   Anopheles gambiae G3 AAS80137.1 Q6JEK5  
 bacteria responsive protein 2; AgBR2   Anopheles gambiae G3 AAS80138.1 Q6JEK4  
 chitinase (CHT1) (fragment)   Anopheles stephensi AAB81855.1 O17417  
 chitinase (CHT2) (fragment)   Anopheles stephensi AAB81856.1 O17418  
 chitinase (CHT3) (fragment)   Anopheles stephensi AAB81857.1 O17419  
 chitinase (ApChI-H)   Antheraea pernyi BAE16585.1 Q4AE61  
 chitinase, partial (fragment)   Apamea crenata ANT95805.1    
 chitinase 1 (Chi1) 3.2.1.14 Aphanocladium album CAA45468.1
AAB21333.1
AAE59708.1
P32470  
 chitinase, partial (fragment)   Aphanomyces astaci ASN64416.1    
 chitinase, partial (fragment)   Aphanomyces astaci AFD97765.1
AFD97768.1
AFD97769.1
AFD97771.1
AFD97775.1
AFD97776.1
AFD97777.1
AFD97778.1
AFD97779.1
AFD97783.1
AFD97786.1
AFD97793.1
AFD97794.1
AFD97796.1
AFD97797.1
AFD97799.1
AFD97800.1
AFD97801.1
AFD97802.1
AFD97804.1
AFD97805.1
AFD97808.1
AFD97811.1
AFD97813.1
AFD97815.1
AFD97818.1
AFD97819.1
AFD97820.1
AFD97821.1
AFD97822.1
AFD97824.1
AFD97825.1
AFD97826.1
AFD97827.1
AFD97828.1
AFD97830.1
AFD97833.1
AFD97834.1
AFD97835.1
AFD97836.1
AFD97840.1
AFD97843.1
AFD97848.1
AFD97851.1
AFD97853.1
AFD97857.1
AFD97859.1
AFD97863.1
AFD97866.1
AFD97869.1
AFD97874.1
AFD97875.1
AFD97877.1
AFD97883.1
AFD97885.1
AFD97894.1
AFD97895.1
AFD97899.1
AFD97902.1
AFD97905.1
AFD97914.1
AFD97919.1
AFD97921.1
AFD97923.1
AFD97924.1
AFD97927.1
AFD97928.1
AFD97929.1
AFD97931.1
   
 chitinase, partial (fragment)   Aphanomyces astaci AFD97766.1
AFD97767.1
AFD97790.1
AFD97791.1
AFD97792.1
AFD97809.1
AFD97817.1
AFD97823.1
AFD97842.1
AFD97844.1
AFD97845.1
AFD97846.1
AFD97847.1
AFD97850.1
AFD97856.1
AFD97860.1
AFD97865.1
AFD97871.1
AFD97872.1
AFD97880.1
AFD97881.1
AFD97882.1
AFD97889.1
AFD97893.1
AFD97896.1
AFD97901.1
AFD97909.1
AFD97913.1
AFD97915.1
AFD97932.1
   
 chitinase, partial (fragment)   Aphanomyces astaci AFD97770.1
AFD97772.1
AFD97773.1
AFD97785.1
AFD97787.1
AFD97788.1
AFD97798.1
AFD97810.1
AFD97814.1
AFD97816.1
AFD97831.1
AFD97832.1
AFD97837.1
AFD97838.1
AFD97839.1
AFD97841.1
AFD97852.1
AFD97855.1
AFD97858.1
AFD97867.1
AFD97870.1
AFD97873.1
AFD97884.1
AFD97887.1
AFD97888.1
AFD97890.1
AFD97891.1
AFD97892.1
AFD97897.1
AFD97906.1
AFD97908.1
AFD97911.1
AFD97912.1
AFD97917.1
AFD97918.1
AFD97920.1
AFD97930.1
   
 chitinase, partial (fragment)   Aphanomyces astaci AFD97774.1
AFD97806.1
AFD97868.1
AFD97876.1
AFD97886.1
AFD97910.1
AFD97916.1
AJT59683.1
   
 chitinase, partial (fragment)   Aphanomyces astaci AFD97780.1    
 chitinase, partial (fragment)   Aphanomyces astaci AFD97781.1
AFD97812.1
   
 chitinase, partial (fragment)   Aphanomyces astaci AFD97782.1    
 chitinase, partial (fragment)   Aphanomyces astaci AFD97784.1
AFD97803.1
AFD97861.1
AFD97862.1
AFD97864.1
AFD97898.1
AFD97900.1
AFD97926.1
   
 chitinase, partial (fragment)   Aphanomyces astaci AFD97789.1
AFD97854.1
AFD97878.1
   
 chitinase, partial (fragment)   Aphanomyces astaci AFD97795.1    
 chitinase, partial (fragment)   Aphanomyces astaci AFD97807.1    
 chitinase, partial (fragment)   Aphanomyces astaci AFD97829.1
AFD97922.1
   
 chitinase, partial (fragment)   Aphanomyces astaci AFD97849.1    
 chitinase, partial (fragment)   Aphanomyces astaci AFD97879.1    
 chitinase, partial (fragment)   Aphanomyces astaci AFD97903.1    
 chitinase, partial (fragment)   Aphanomyces astaci AFD97904.1    
 chitinase, partial (fragment)   Aphanomyces astaci AFD97907.1    
 chitinase, partial (fragment)   Aphanomyces astaci AFD97925.1    
 chitinase, partial (fragment)   Aphanomyces astaci AFD97933.1
AFD97959.1
   
 chitinase, partial (fragment)   Aphanomyces astaci AFD97934.1    
 chitinase, partial (fragment)   Aphanomyces astaci AFD97935.1
AFD97940.1
   
 chitinase, partial (fragment)   Aphanomyces astaci AFD97936.1
AFD97943.1
AFD97955.1
AFD97956.1
   
 chitinase, partial (fragment)   Aphanomyces astaci AFD97937.1
AFD97944.1
AFD97958.1
   
 chitinase, partial (fragment)   Aphanomyces astaci AFD97938.1    
 chitinase, partial (fragment)   Aphanomyces astaci AFD97939.1
AFD97947.1
AFD97950.1
AFD97951.1
AFD97957.1
   
 chitinase, partial (fragment)   Aphanomyces astaci AFD97941.1    
 chitinase, partial (fragment)   Aphanomyces astaci AFD97942.1    
 chitinase, partial (fragment)   Aphanomyces astaci AFD97945.1    
 chitinase, partial (fragment)   Aphanomyces astaci AFD97946.1
AFD97952.1
AFD97954.1
   
 chitinase, partial (fragment)   Aphanomyces astaci AFD97948.1
AFD97949.1
AFD97953.1
   
 chitinase (Chi3)   Aphanomyces astaci Gb04 ACJ04636.1
ACJ66260.1
ACS94231.1
B6VFQ9  
 Chi1 (fragment)   Aphanomyces astaci Gb04 AAX59701.1 Q2TIM4  
 chitinase (Chi2)   Aphanomyces astaci Gb04 ABK59977.2
ACS94232.1
A7YKU3  
 Chi1   Aphanomyces astaci Hoe CAC95177.1 Q8H9F5  
 Chi1 (fragment)   Aphanomyces astaci KV AAX59700.1 Q2TIM5  
 Chi1 (fragment)   Aphanomyces astaci L1 AAX59699.1 Q2TIM9  
 Chi1 (fragment)   Aphanomyces astaci PC AAX59696.1 Q2TIM9  
 Chi1 (fragment)   Aphanomyces astaci RA AAX59698.1 Q2TIM7  
 Chi1 (fragment)   Aphanomyces astaci SV AAX59697.1 Q2TIM9  
 Chi1 (fragment)   Aphanomyces astaci YX AAX59695.1 Q2TIM9  
 Chi1 (fragment)   Aphanomyces frigidophilus NJM 9665 ACS31825.1 C9D6Z7  
 Chi1 (fragment)   Aphanomyces frigidophilus SAP472 ACS31826.1 C9D6Z8  
 Chi1 (fragment)   Aphanomyces helicoides CBS 210.82 AAX59706.1 Q2TIL9  
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