Glycoside Hydrolase Family 18

Known Activitieschitinase (EC 3.2.1.14); endo-β-N-acetylglucosaminidase (EC 3.2.1.96); 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; InterPro; PFAM; PROSITE;
Commercial Enzyme Provider(s)NZYTech; PROZOMIX;
Statistics GenBank accession (5310); Uniprot accession (3162); PDB accession (216); 3D entries (48); cryst (3)
All (4286) Archaea (25) Bacteria (2512) Eukaryota (1630) Viruses (74) unclassified (45) Structure (48 - 3 cryst) Characterized (391)
Viruses
Protein Name EC#OrganismGenBankUniprotPDB/3D
 ATCV1_Z780L   Acanthocystis turfacea Chlorella virus 1 ATCV-1 ABT16914.1 A7KA40  
 ATCV1_Z814L   Acanthocystis turfacea Chlorella virus 1 ATCV-1 ABT16948.1 A7KA74  
 ORF46   Acipenserid herpesvirus 2 SRWSHV (Snake River White Sturgeon Herpesvirus) AEF97704.1    
 ChiT (fragment)   Agraulis vanillae MNPV tmk1 ADV74827.1    
 chitinase (agip27;ChiA)   Agrotis ipsilon multiple nucleopolyhedrovirus Illinois ACI28729.1 B6D5U1  
 AsGVgp032   Agrotis segetum granulovirus AAS82706.1 Q6QXF1  
 ORF-23   Agrotis segetum nucleopolyhedrovirus AAZ38189.1 Q287P9  
 chitinase (ChiA)   Antheraea pernyi nucleopolyhedrovirus ABF50272.1
ABQ12260.1
BAB69772.1
Q91CM0  
 chitinase (ChiA) 3.2.1.14 Autographa californica nucleopolyhedrovirus AAA66756.1
CAD79454.1
NP_054156.1
P41684  
 chitinase A (Bomanpvgp109)   Bombyx mandarina nucleopolyhedrovirus ACQ57299.1 C3VP15  
 chitinase (Chi)   Bombyx mori NPV AEC11640.1    
 chitinase A (ChiA)   Bombyx mori NPV SUZHOU AAT38520.1 Q6IWK7  
 chitinase (ChiA;Chi-A;orf126;BmNPVgp110) 3.2.1.14 Bombyx mori NPV T3 AAC63792.1
NP_047523.1
O92482  
 chitinase   Bombyx mori nuclear polyhedrosis virus K1 AAV73807.1 Q5PSI9  
 chitinase (vChti-1) 3.2.1.14 Chlorella virus ATCV-1 BAA78554.1 Q9WAX4  
 chitinase (vChti-1) 3.2.1.14 Chlorella virus ATCV-1 BAA78554.1 Q9WAX4  
 ORF121   Choristoneura fumiferana DEF MNPV AAQ91647.1
NP_932730.1
Q6VTL8  
 chitinase 3.2.1.14 Choristoneura fumiferana MNPV AAB68594.1 O41478
Q6LCC0
 
 chitinase   Choristoneura fumiferana MNPV AAP29899.1
NP_848428.1
O41478
Q6LCC0
 
 chitinase (ORF-65)   Chrysodeixis chalcites nucleopolyhedrovirus AAY83996.1 Q4KT15  
 chitinase (ORF-59)   Clanis bilineata nucleopolyhedrosis virus ABF47402.1 Q0N441  
 chitinase (Orf1)   Clostera anachoreta granulovirus Hubei ADU24591.1
AEB00297.1
   
 chitinase (ChiA;Chi;ORF10) 3.2.1.14 Cydia pomonella granulovirus AAK70677.1
BAA31200.1
NP_148794.1
O91465  
 ChiT (fragment)   Dione juno MNPV tmk1/ARG/2003 ADQ43791.1    
 ORF50   Ecotropis obliqua NPV A1 ABI35733.1 A0EYV3  
 exochitinase (Chi;Orf110) 3.2.1.14 Epiphyas postvittana NPV AAK85674.1
NP_203279.1
Q91GE4  
 chitinase   Euproctis pseudoconspersa nucleopolyhedrovirus Hangzhou ACO53505.1 C3TWW3  
 SGHV027   Glossina pallidipes salivary gland hypertrophy virus ABQ08800.1 B0YLI1  
 chitinase (Hear105)   Helicoverpa armigera granulovirus ABY47796.1 A9YMU7  
 HaMNV_gp018   Helicoverpa armigera multiple nucleopolyhedrovirus ACH88540.1 B7SU76  
 chitinase   Helicoverpa armigera NPV AAM78589.1 Q8JMJ8  
 chitinase 3.2.1.14 Helicoverpa armigera NPV AAD22958.1 Q9WFU7  
 chitinase 3.2.1.14 Helicoverpa armigera NPV AAK28347.1
AAK96293.1
NP_203597.1
Q91BX5
Q995W8
 
 ORF41   Helicoverpa armigera NPV NNg1 BAG74606.1 B5X036  
 Orf40   Helicoverpa armigera NPV strain Australia AEN03965.1    
 HanGV4gp041   Helicoverpa armigera nucleopolyhedrovirus G4 AAG53784.1
AAK56504.1
NP_075110.1
Q99H06  
 ORF41   Helicoverpa zea SNPV AAL56186.1
NP_542664.1
Q8V5U9  
 chitinase   Helicoverpa zea SNPV AAB54004.1 O10621  
 chitinase (ChiA) 3.2.1.14 Hyphantria cunea nucleopolyhedrovirus AAD31762.1
BAE72319.1
Q9WGG2  
 chitA   Leucania separata nuclear polyhedrosis virus AH1 AAR28821.1 Q0IL62  
 chitinase (LdOrf-70)   Lymantria dispar MNPV AAC70256.1
NP_047707.1
Q9YMQ7  
 chitinase (ChitinasE)   Lymantria xylina MNPV ADD73775.1 D4N2A3  
 ORF 22 (Chit)   Mamestra configurata NPV-A AAM09130.1
AAQ11041.1
NP_613105.1
Q8QLL2  
 Chit   Mamestra configurata NPV-B AAM95006.1
NP_689194.1
Q8JMD3  
 chitinase   Maruca vitrata MNPV ABL76047.1 A1YRF7  
 chitinase (ChiA)   Orgyia ericae nucleopolyhedrovirus AAR90602.1 Q6R8F1  
 chitinase   Orgyia leucostigma NPV ABY65750.1 B0FDP2  
 chitinase (ORF124)   Orgyia pseudotsugata MNPV AAC59123.1
NP_046280.1
O10363.1  
 chitinase (A260R;PBCV1_A260R) 3.2.1.4 Paramecium bursaria Chlorella virus 1 AAC96628.1
AAC96628.3
AAC97066.2
NP_048613.1
Q84577  
 endochitinase (A181/182R;PBCV1_A181/182R) 3.2.1.14 Paramecium bursaria Chlorella virus 1 AAC96549.2
AAC96549.3
NP_048529.1
Q84501  
 endochitinase (A181/182R;PBCV1_A181/182R) 3.2.1.14 Paramecium bursaria Chlorella virus 1 AAC96549.2
AAC96549.3
NP_048529.1
Q84501  
 AR158_C220R   Paramecium bursaria Chlorella virus AR158 ABU43766.1 A7RB24  
 AR158_C220R   Paramecium bursaria Chlorella virus AR158 ABU43766.1 A7RB24  
 FR483_N779R   Paramecium bursaria Chlorella virus FR483 ABT16064.1 A7J8D3  
 FR483_N779R   Paramecium bursaria Chlorella virus FR483 ABT16064.1 A7J8D3  
 MT325_M085R   Paramecium bursaria chlorella virus MT325 ABT13639.1 A7ITG5  
 MT325_M791R   Paramecium bursaria chlorella virus MT325 ABT14345.1 A7IVH1  
 NY2A_B239R   Paramecium bursaria Chlorella virus NY2A ABT14638.1 A7IWB4  
 NY2A_B239R   Paramecium bursaria Chlorella virus NY2A ABT14638.1 A7IWB4  
 chitinase (PrGVORF10)   Pieris rapae granulovirus ACZ63496.1
ADO85435.1
D2J4H7  
 chitinase   Plutella xylostella multiple nucleopolyhedrovirus ABE68509.1 Q0GY99  
 chitinase (Orf108)   Pseudaletia unipuncta granulovirus ACH69458.1 B6S6X7  
 chitinase   Rachiplusia ou MNPV AAN28026.1
NP_703113.1
Q8B9D6  
 ORF19   Spodoptera exigua MNPV AAF33549.1
NP_037779.1
Q9J8B6  
 Sf22   Spodoptera frugiperda MNPV ADV91253.1
ADV91255.1
   
 chitinase   Spodoptera frugiperda MNPV 3AP2 ABM45733.1
ABV82986.1
ABV82995.1
A1YJ12  
 chitinase   Spodoptera litura NPV EGYPT ABY84875.1 B0LUL7  
 chitinase   Spodoptera litura NPV FUKUYAMA ABY84879.1 B0LUM1  
 chitinase   Spodoptera litura NPV G2 AAG02378.1
AAL01727.1
NP_258310.1
Q9EN64  
 chitinase   Spodoptera litura NPV OGASAWARA ABY84883.1 B0LUM5  
 chitinase   Spodoptera litura nucleopolyhedrovirus II ACI47387.1 B7SVP5  
 chitinase   Trichoplusia ni SNPV AAZ67432.1 Q462A4  
 ORF   Wiseana iridescent virus ADO00363.1    
 XecnGVgp103 (Orf103)   Xestia c-nigrum granulovirus AAF05217.1
NP_059251.1
Q9PYU0  




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