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 (42170); Uniprot accession (503); PDB accession (428); 3D entries (111); cryst (2)
| 1 | 2 | 3 | 4 | 5 | 6 |
Viruses
Protein Name EC#OrganismGenBank UniprotPDB/3D
 SEA_SJAY_23   Microbacterium phage SJay UEM46749.1    
 SEA_SONOFLEVI_23   Microbacterium phage SonOfLevi QHJ86219.1    
 STANKTOSSA_23   Microbacterium phage Stanktossa QDP44695.1    
 PBI_STINGRAY_23   Microbacterium phage StingRay AVJ51468.1    
 SEA_STORMBREAKER8_23   Microbacterium phage Stormbreaker8 QYW01485.1    
 SEA_STRATHDEE_23   Microbacterium phage Strathdee QXO14717.1    
 PBI_SUPERFRESH_23   Microbacterium phage Superfresh AUX83299.1    
 SEA_TATARKAPM_23   Microbacterium phage TatarkaPM QOC56815.1    
 PBI_TEAGAN_23   Microbacterium phage Teagan AWN04304.1    
 PBI_TEDDYBEAR_23   Microbacterium phage TeddyBear AVR56566.1    
 PBI_TENDA_23   Microbacterium phage Tenda AUX83425.1    
 SEA_THERESITA_23   Microbacterium phage Theresita QBZ73214.1    
 SEA_THOMPSONE_23   Microbacterium phage Thompsone UVK62627.1    
 SEA_TINSULPHUR_24 (23)   Microbacterium phage TinSulphur QBZ73131.1    
 SEA_VELENE_23   Microbacterium phage Velene QDM56697.1    
 SEA_WILDNOUT_23   Microbacterium phage WildNOut QQV93108.1    
 SEA_WINZIGESPINNE_23   Microbacterium phage Winzigespinne QOR56020.1    
 SEA_YUUY_22   Microbacterium phage YuuY QFP95351.1    
 SEA_ZADA_23   Microbacterium phage Zada QJD50101.1    
 SEA_ZENITSU_22   Microbacterium phage Zenitsu WNN93823.1    
 8_31   Mimiviridae sp. ChoanoV1 QDY52434.1    
 SAGO17_0013   Mimivirus AB-566-O17 ARR74933.1    
 chitinase   Mythimna sequax nucleopolyhedrovirus WBB27265.1    
 ORF (fragment)   Mythimna unipuncta nucleopolyhedrovirus #7 AUV65312.1    
 chitinase   Mythimna unipuncta nucleopolyhedrovirus #7 AUV65301.1    
 Chitinase   Mythimna unipuncta nucleopolyhedrovirus KY310 AXU41489.1    
 chitinase (Orf32)   Neophasia sp. alphabaculovirus QBC76011.1    
 chitinase   Olene mendosa nucleopolyhedrovirus UOQ18844.1    
 Os5_119R   Only Syngen Nebraska virus 5 APC25632.1    
 Os5_117L   Only Syngen Nebraska virus 5 APC25630.1    
 chitinase (ChiA)   Orgyia ericae nucleopolyhedrovirus AAR90602.1    
 chitinase   Orgyia leucostigma nucleopolyhedrovirus ABY65750.1    
 chitinase (ORF124)   Orgyia pseudotsugata multiple nucleopolyhedrovirus AAC59123.1
NP_046280.1
   
 chitinase (Ops030)   Orgyia pseudotsugata single capsid nuclopolyhedrovirus QWO71558.1    
 chitinase   Palpita vitrealis nucleopolyhedrovirus USC25961.1    
 chitinase (A260R;PBCV1_A260R) 3.2.1.14 Paramecium bursaria Chlorella virus 1 AAC96628.1
AAC96628.3
AAC97066.2
NP_048613.1
O41019
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  
 PBCVAN69C_204R   Paramecium bursaria Chlorella virus AN69C AGE48399.1    
 PBCVAN69C_204R   Paramecium bursaria Chlorella virus AN69C AGE48399.1    
 PBCVAN69C_297R   Paramecium bursaria Chlorella virus AN69C AGE48437.1    
 PBCVAP110A_942R   Paramecium bursaria Chlorella virus AP110A AGE48989.1    
 PBCVAP110A_106R   Paramecium bursaria Chlorella virus AP110A AGE48698.1    
 AR158_C220R   Paramecium bursaria Chlorella virus AR158 ABU43766.1    
 AR158_C220R   Paramecium bursaria Chlorella virus AR158 ABU43766.1    
 PBCVCan184_944R (Can18-4_944R)   Paramecium bursaria Chlorella virus Can18-4 AGE50008.1    
 PBCVCan184_113R (Can18-4_113R)   Paramecium bursaria Chlorella virus Can18-4 AGE49710.1    
 PBCVCVA1_942R (Cvα-1_942R)   Paramecium bursaria Chlorella virus CVA-1 AGE50671.1    
 PBCVCVA1_102R (Cvα-1_102R)   Paramecium bursaria Chlorella virus CVA-1 AGE50385.1    
 PBCVCVB1_890R (Cvβ-1_890R)   Paramecium bursaria Chlorella virus CVB-1 AGE51009.1    
 PBCVCVB1_129R (Cvβ-1_129R)   Paramecium bursaria Chlorella virus CVB-1 AGE50730.1    
 PBCVCVG1_896R (Cvg-1_896R)   Paramecium bursaria Chlorella virus CVG-1 AGE51335.1    
 PBCVCVG1_105R (Cvg-1_105R)   Paramecium bursaria Chlorella virus CVG-1 AGE51059.1    
 PBCVCviKI_194R   Paramecium bursaria Chlorella virus CviKI AGE51440.1    
 PBCVCviKI_194R   Paramecium bursaria Chlorella virus CviKI AGE51440.1    
 bimodular exo-chitinase / β-N-acetylglucosaminidase (vChti-1) 3.2.1.14 Paramecium bursaria Chlorella virus CVK2 BAA78554.1 Q9WAX4  
 bimodular exo-chitinase / β-N-acetylglucosaminidase (vChti-1) 3.2.1.14
3.2.1.52
Paramecium bursaria Chlorella virus CVK2 BAA78554.1 Q9WAX4  
 PBCVCVM1_927R (Cvm-1_927R)   Paramecium bursaria Chlorella virus CVM-1 AGE52009.1    
 PBCVCVM1_122R (Cvm-1_122R)   Paramecium bursaria Chlorella virus CVM-1 AGE51723.1    
 PBCVCVR1_948R (Cvr-1_948R)   Paramecium bursaria Chlorella virus CVR-1 AGE52349.1    
 PBCVCVR1_109R (Cvr-1_109R)   Paramecium bursaria Chlorella virus CVR-1 AGE52062.1    
 PBCVCvsA1_200R   Paramecium bursaria Chlorella virus CvsA1 AGE52455.1    
 PBCVCvsA1_200R   Paramecium bursaria Chlorella virus CvsA1 AGE52455.1    
 PBCVCZ2_902R (Cz-2_902R)   Paramecium bursaria Chlorella virus CZ-2 AGE53016.1    
 PBCVCZ2_070R (Cz-2_070R)   Paramecium bursaria Chlorella virus CZ-2 AGE52727.1    
 FR483_N779R   Paramecium bursaria Chlorella virus FR483 ABT16064.1    
 FR483_N779R   Paramecium bursaria Chlorella virus FR483 ABT16064.1    
 PBCVFr5L_897R   Paramecium bursaria Chlorella virus Fr5L AGE53360.1    
 PBCVFr5L_098R   Paramecium bursaria Chlorella virus Fr5L AGE53069.1    
 PBCVIL3A_196R (Il-3a_196R)   Paramecium bursaria Chlorella virus IL-3A AGE53811.1    
 PBCVIL3A_196R (Il-3a_196R)   Paramecium bursaria Chlorella virus IL-3A AGE53811.1    
 PBCVIL3A_285R (Il-3a_285R)   Paramecium bursaria Chlorella virus IL-3A AGE53845.1    
 PBCVIL52s1_262R (Il-5-2s1_262R)   Paramecium bursaria Chlorella virus IL-5-2s1 AGE54161.1    
 PBCVIL52s1_262R (Il-5-2s1_262R)   Paramecium bursaria Chlorella virus IL-5-2s1 AGE54161.1    
 PBCVIL52s1_373R (Il-5-2s1_373R)   Paramecium bursaria Chlorella virus IL-5-2s1 AGE54203.1    
 PBCVKS1B_132R   Paramecium bursaria Chlorella virus KS1B AGE54506.1    
 PBCVKS1B_132R   Paramecium bursaria Chlorella virus KS1B AGE54506.1    
 PBCVKS1B_211R   Paramecium bursaria Chlorella virus KS1B AGE54540.1    
 PBCVMA1D_147R (Mα-1d_147R)   Paramecium bursaria Chlorella virus MA-1D AGE54806.1    
 PBCVMA1D_147R (Mα-1d_147R)   Paramecium bursaria Chlorella virus MA-1D AGE54806.1    
 PBCVMA1D_241R (Mα-1d_241R)   Paramecium bursaria Chlorella virus MA-1D AGE54843.1    
 PBCVMA1E_229R (Mα-1e_229R) (fragment)   Paramecium bursaria Chlorella virus MA-1E AGE55224.1    
 PBCVMA1E_194R (Mα-1e_194R) partial   Paramecium bursaria Chlorella virus MA-1E AGE55208.1    
 MT325_M085R   Paramecium bursaria chlorella virus MT325 ABT13639.1    
 MT325_M791R   Paramecium bursaria chlorella virus MT325 ABT14345.1    
 PBCVNEJV1_088R (Ne-jv-1_088R)   Paramecium bursaria Chlorella virus NE-JV-1 AGE56178.1    
 PBCVNEJV1_328L (Ne-jv-1_328L)   Paramecium bursaria Chlorella virus NE-JV-1 AGE56262.1    
 PBCVNEJV4_205R (Ne-jv-4_205R)   Paramecium bursaria Chlorella virus NE-JV-4 AGE57241.1    
 PBCVNEJV4_205R (Ne-jv-4_205R)   Paramecium bursaria Chlorella virus NE-JV-4 AGE57241.1    
 PBCVNEJV4_298R (Ne-jv-4_298R)   Paramecium bursaria Chlorella virus NE-JV-4 AGE57277.1    
 PBCVNW6652_921R (Nw665.2_921R)   Paramecium bursaria Chlorella virus NW665.2 AGE58174.1    
 PBCVNW6652_921R (Nw665.2_921R)   Paramecium bursaria Chlorella virus NW665.2 AGE58174.1    
 PBCVNY2B_270R (Ny-2b_270R)   Paramecium bursaria Chlorella virus NY-2B AGE58284.1    
 PBCVNY2B_270R (Ny-2b_270R)   Paramecium bursaria Chlorella virus NY-2B AGE58284.1    
 PBCVNY2B_367R (Ny-2b_367R)   Paramecium bursaria Chlorella virus NY-2B AGE58321.1    
 NY2A_B239R   Paramecium bursaria Chlorella virus NY2A ABT14638.1    
 NY2A_B239R   Paramecium bursaria Chlorella virus NY2A ABT14638.1    
 PBCVNYs1_251R (Nys-1_251R)   Paramecium bursaria Chlorella virus NYs1 AGE58657.1    
 PBCVNYs1_251R (Nys-1_251R)   Paramecium bursaria Chlorella virus NYs1 AGE58657.1    
 PBCVNYs1_360R (Nys-1_360R)   Paramecium bursaria Chlorella virus NYs1 AGE58698.1    
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