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 |
Archaea
Protein Name EC#OrganismGenBank UniprotPDB/3D
 chitinase (ChiN1;Chi;VNG_0816G;Vng0816g) 3.2.1.14 Halobacterium salinarum NRC-1 AAG19274.1
NP_279794.1
Q9HR84  
 chitinase (Chia1;HsChiA1;OE2201F) 3.2.1.14 Halobacterium salinarum R1 CAP13543.1 B0R478  
 HFX_5038 (ChiCHme) 3.2.1.14 Haloferax mediterranei ATCC 33500 CGMCC 1.2087 AFK20875.1    
 HFX_5037 (ChiBHme) 3.2.1.14 Haloferax mediterranei ATCC 33500 CGMCC 1.2087 AFK20874.1    
 HFX_5039 (ChiDHme) 3.2.1.14 Haloferax mediterranei ATCC 33500 CGMCC 1.2087 AFK20876.1    
 HFX_5036 (ChiAHme) 3.2.1.14 Haloferax mediterranei ATCC 33500 CGMCC 1.2087 AFK20873.1    
 chitinase (PF1234+PF1233;ChiA+ChiB) (Chi18B+Chi18A) 3.2.1.14
3.2.1.14
Pyrococcus furiosus DSM 3638 AAL81357.1
AAL81358.1
NP_578962.1
NP_578963.1
Q8U1H4
Q8U1H5
 
 chitinase (PF1234+PF1233;ChiA+ChiB) (Chi18B+Chi18A) 3.2.1.14
3.2.1.14
Pyrococcus furiosus DSM 3638 AAL81357.1
NP_578962.1
Q8U1H5 2DSK[A,B]
3A4W[A,B]
3A4X[A,B]
 chitinase A (ChiA;CHITON_1717) 3.2.1.14 Thermococcus chitonophagus DSM 10152 CUX78496.1
AAR13021.1
BAU88507.1
Q6T390  
 chitinase A (ChiA;CHITON_1717) 3.2.1.14 Thermococcus chitonophagus DSM 10152 CUX78496.1
AAR13021.1
BAU88507.1
Q6T390  
 chitinase A (ChiA;TK1765) 3.2.1.14
3.2.1.-
Thermococcus kodakarensis KOD1 BAD85954.1
CAT70561.1
Q9UWR7  
 chitinase A (ChiA;TK1765) 3.2.1.14
3.2.1.-
Thermococcus kodakarensis KOD1 BAD85954.1
CAT70561.1
Q9UWR7  
Bacteria
Protein Name EC#OrganismGenBank UniprotPDB/3D
 chitinase (Chi1) 3.2.1.14 Aeromonas caviae CB101 CAD58828.1 Q8GHI4  
 chitinase A (ChiA;AcD1ChiA) 3.2.1.14 Aeromonas caviae K1 / D1 AAA93130.1 Q43919  
 chitinase 3.2.1.14 Aeromonas hydrophila 11 AAF00578.1 Q9RQJ3  
 chitinase (ChiA) 3.2.1.14 Aeromonas hydrophila JMP636 AAF70180.1
AAE36542.1
Q9L5D5  
 chitinase 92 (Chi92) 3.2.1.14 Aeromonas hydrophila JP101 AAG09437.1 Q9F9Q8  
 chitinase (Chi-A;AHA_0977) 3.2.1.14 Aeromonas hydrophila subsp. hydrophila ATCC 7966 ABK39408.1 A0KGX3  
 chitinase (ChiA) 3.2.1.14 Aeromonas hydrophila SUWA-9 BAE87051.1 Q25BN2  
 hexaoligochitin-producing chitinase (ASCHI61) (fragment) 3.2.1.14 Aeromonas schubertii ABF29701.1 D2CFK8  
 chitinase II 3.2.1.14 Aeromonas sp. 10S-24 BAA06605.1 Q59145  
 chitinase (pCA8) 3.2.1.14 Aeromonas sp. 10S-24 BAA36459.1 Q9ZNJ2  
 chitinase (ORF1) 3.2.1.14 Aeromonas sp. 10S-24 BAA09626.1 Q59141  
 chitinase (ORF2) 3.2.1.14 Aeromonas sp. 10S-24 BAA09627.1 Q59142  
 chitinase (ORF3) 3.2.1.14 Aeromonas sp. 10S-24 BAA09628.1 Q59143  
 chitinase (ChiCD3) 3.2.1.14 Aeromonas sp. CD3 / Aeromonas veronii CD3 ACR33067.1 D2DJ38  
 chitinase (ChiB565;B565_0857) 3.2.1.14 Aeromonas veronii B565 AEB48892.1    
 chitinase (ChiC) 3.2.1.14 Arthrobacter sp. TAD20 CAD43215.1 Q6A4C3  
 chitinase (ChitiA) 3.2.1.14 Arthrobacter sp. TAD20 CAB62382.1 Q9RMB8  
 chitinase (ChitiB) 3.2.1.14 Arthrobacter sp. TAD20 CAB62499.1 Q9REI6 1KFW[A]
 N-acetylglucosaminidase / spore cortex-lytic enzyme (SleL;YaaH;BAS3402) 3.2.1.- Bacillus anthracis str. Sterne AAT55709.1
AJH43466.1
   
 chitinase CW (ChiCW) 3.2.1.14 Bacillus cereus 28-9 AAM48520.2 Q8KVU8  
 chitinase CH (ChiCH) 3.2.1.14 Bacillus cereus 28-9 AAP47142.1 Q7X4L4  
 exochitinase (BC3725) 3.2.1.14 Bacillus cereus ATCC 14579 AAP10651.1
NP_833450.1
Q81A65  
 chitinase B (ChiB) 3.2.1.14 Bacillus cereus CH BAB16891.1 Q9FAC8  
 chitinase A (ChiA) 3.2.1.14 Bacillus cereus CH BAB16890.1 Q9FAC9  
 chitinase (ChiA;BTZK0359;BCE33L0359) 3.2.1.14 Bacillus cereus E33L AAU19880.1
AJI29955.1
Q63GJ3  
 cortical lytic enzyme / N-acetylglucosaminidase (CFLE;SleL) 3.2.1.- Bacillus cereus IFO13579 BAA92376.1 Q9K3E4  
 chitinase (ChiNCTU2) 3.2.1.14 Bacillus cereus NCTU2 / 42 ACY39278.1 D0VV09 3N11[A]
3N12[A]
3N13[A]
3N15[A]
3N17[A]
3N18[A]
3N1A[A]
 chitinase (ChiL) 3.2.1.14 Bacillus cf. pumilus SG2 ABF50676.1
ABI15083.1
Q1HFN7  
 bifunctional chitinase / lysozyme (ChiS) 3.2.1.14
3.2.1.17
Bacillus cf. pumilus SG2 ABI15082.1
ABC86581.1
Q2I0I7  
 chitinase (Chi1) 3.2.1.14 Bacillus circulans C-2 AAF74782.1 Q9KHB3  
 chitinase (Chi41) 3.2.1.14 Bacillus circulans NO. 4.1 AAF23368.1 Q9RG51  
 chitinase A1 (ChiA;ChiA1) 3.2.1.14 Bacillus circulans WL-12 AAA81528.1 P20533 1ITX[A]
 chitinase C1 (ChiC) 3.2.1.14 Bacillus circulans WL-12 BAA13974.1 P94289  
 chitinase D (ChiD) 3.2.1.14 Bacillus circulans WL-12 BAA34114.1 P27050  
 chitinase (ChiA;ChiABhp;ChiJ;BH0916) 3.2.1.14 Bacillus halodurans C-125 BAB04635.1
NP_241782.1
Q9KED7  
 chitinase (Chi) 3.2.1.14 Bacillus licheniformis AAB47847.1 P94339  
 chitinase 1 (Chi;Chi1;YvbX;BliCHI;BLi00338;BL01685) 3.2.1.14 Bacillus licheniformis DSM 13 = ATCC 14580 AAU21943.2
AAU21943.1
AAU39296.1
ACR87900.1
ACW83016.1
CAF05579.1
CAV28467.1
A5A699
Q65NR8
 
 chitinase (ChiA) (partial) 3.2.1.14 Bacillus licheniformis DSM 8785 ACK44109.1 B7UB89  
 chitinase A-BL3 (ChiA;ChiA-BL3) 3.2.1.14 Bacillus licheniformis MS-3 ACI24006.1 B6DXA5  
 chitinase (ChiMY;ChiB) 3.2.1.14 Bacillus licheniformis MY75 ACF40833.1 B5A7P1  
 chitinase 3.2.1.14 Bacillus licheniformis N1 ACU43581.1 C8CAY2  
 chitinase B (ChiB;Chi72;Chi66;Chi58) 3.2.1.14 Bacillus licheniformis SK-1 ABJ74158.1 Q1EM71  
 spore cortex-specific N-acetylglucosaminidase (SleL;YaaH;BMQ_0021) 3.2.1.- Bacillus megaterium QM B1551 ADE67156.1
ABS32202.1
YP_003560590.1
A7LFH9
D5DUS2
4S3K[A]
 chitinase (ChiL;ChiLm) 3.2.1.14 Bacillus sp. AV2-9 AFK64770.1    
 chitinase (Chisb;Chi) (chitobiose-producing) 3.2.1.- Bacillus sp. DAU101 ABC66095.1 A0EQW8  
 chitinase (Chi-1;SCChi-1) 3.2.1.14 Bacillus sp. SC081 / Bacillus atrophaeus SC081 ADJ56636.1 D8V3F2  
 chitinase (Chi113) 3.2.1.14 Bacillus subtilis AP113 ABG57262.1 Q0Q2G5  
 chitinase (Chi) (Chi18) 3.2.1.14 Bacillus subtilis CHU26 AAC23715.1 O85500  
 chitinase 3.2.1.14 Bacillus thuringiensis 97243-1 ACA34287.1 B1PBV0  
 chitinase (Chi) 3.2.1.14 Bacillus thuringiensis BT-7216 / 010 ABO63962.1 A4L294  
 chitinase (ChiA74;Chi) 3.2.1.14 Bacillus thuringiensis LBIT-82 AAL17867.1
AAL71886.2
ABO21095.1
Q8RSX8
Q93AD3
 
 chitinase B (ChiB) 3.2.1.14 Bacillus thuringiensis serovar colmeri 15A3 ABF57674.1 Q1G154  
 chitinase A (ChiA) 3.2.1.14 Bacillus thuringiensis serovar colmeri 15A3 ABM05818.1 A1YLR3  
 chitinase (Schi;Kchi) 3.2.1.14 Bacillus thuringiensis serovar kurstaki AAO34713.1 Q84FN2  
 chitinase (Chi;BtCHI) (partial) 3.2.1.14 Bacillus thuringiensis serovar kurstaki ACW83014.1 D0EW64  
 chitobiosidase / exochitinase (Chi255) 3.2.1.14
3.2.1.-
Bacillus thuringiensis serovar kurstaki BUPM255 CAG25670.1 Q3MTV5  
 chitinase (ChiA;ChiA-HD73) 3.2.1.14 Bacillus thuringiensis serovar kurstaki HD-73 ABQ65137.2 A5YRG4  
 chitinase (Chi9602;Chi) 3.2.1.14 Bacillus thuringiensis serovar tenebrionis 9602 AHA95666.1    
 chitinase (Chi) 3.2.1.14 Bacillus thuringiensis SUBSP. PAKISTANI AAB58579.1 O07088  
 endo-β-N-acetylglucosaminidase (BT3987;BT_3987) 3.2.1.96 Bacteroides thetaiotaomicron VPI-5482 AAO79092.1
NP_812898.1
Q8A0N4 3POH[A]
 endoglycosidase (EndoBI-2;BLIF_1310) 3.2.1.96 Bifidobacterium longum subsp. infantis 157F BAJ71450.1    
 endoglycosidase (EndoBI-1;Blon_2468) 3.2.1.96 Bifidobacterium longum subsp. infantis ATCC 15697 = JCM 1222 = DSM 20088 ACJ53522.1 B7GPC7  
 chitinase (ChiA) 3.2.1.14 Brevibacillus laterosporus M64 AKN21157.1    
 chitinase (ChiC) 3.2.1.14 Brevibacillus laterosporus M9 AKN79540.1    
 chitinase 72A (Chi72A) 3.2.1.14 Brevibacillus sp. CDY64 AKN79541.1    
 chitinase A (ChiA) 3.2.1.14 Burkholderia gladioli CHB101 BAA92251.1 Q9LBM1  
 endo-β-N-acetylglucosaminidase (GpdG;Ccan_08720) 3.2.1.96 Capnocytophaga canimorsus Cc5 AEK22990.1    
 chitinase 63 (Chi63) 3.2.1.14 Cellulomonas sp. GM13 AAF00931.2 Q84BN2  
 chitinase A (ChiA) 3.2.1.14 Cellulomonas uda ATCC 21399 AAG27061.2 Q9EY44  
 chitinase C (ChiC) 3.2.1.14 Chitiniphilus shinanonensis SAY3 BAK53887.1    
 chitinase E (ChiE) 3.2.1.14 Chitiniphilus shinanonensis SAY3 BAK53889.1    
 chitinase G (ChiG) 3.2.1.14 Chitiniphilus shinanonensis SAY3 BAK53891.1    
 chitinase (ChiL) 3.2.1.14 Chitiniphilus shinanonensis SAY3 BAK53954.1   cryst
 chitinase D (ChiD) 3.2.1.14 Chitiniphilus shinanonensis SAY3 BAK53888.1    
 chitinase (Chi54) 3.2.1.14 Chromobacterium sp. C-61 AAP88583.1 Q5MYT4  
 chitinase (Chi45;CvChi45;CV2935) 3.2.1.14 Chromobacterium violaceum ATCC 12472 AAQ60603.1
NP_902605.1
Q7NTW8 4TX8[A]
 exo-chitinase X (CHI-X) (fragment) 3.2.1.14 Citrobacter freundii P AGD94964.1
AGD94964.2
   
 chitinase A (ChiA) (Chi18A) 3.2.1.14 Clostridium paraputrificum M-21 BAA34922.1 Q9ZNL0  
 chitinase B (ChiB) (Chi18B) 3.2.1.14 Clostridium paraputrificum M-21 BAA23796.1 O50076  
 chitinase C (ChiC) (Chi18C) 3.2.1.14 Clostridium paraputrificum M-21 BAD12045.1
BAD29950.1
Q75ZW9  
 chitinase (Chi67) 3.2.1.14 Doohwaniella chitinasigens YHS-A2 AAF21468.1 Q9RCG5  
 endo-N-acetylglucosaminidase F1 (EndoF1;Endo F1) 3.2.1.96 Elizabethkingia meningoseptica ATCC 33958 AAA24922.1 P36911 2EBN[A]
 endo-N-acetylglucosaminidase F2 (EndoF2;Endo F2) 3.2.1.96 Elizabethkingia meningoseptica ATCC 33958 AAA24923.1 P36912  
 endo-N-acetylglucosaminidase F3 (EndoF3;Endo F3) 3.2.1.96 Elizabethkingia meningoseptica ATCC 33958 AAA24924.1 P36913 1EOK[A]
1EOM[A]
 chitinase A (ChiA) 3.2.1.14 Enterobacter sp. G-1 AAB97779.1 O54328  
 chitinase (ChiA) 3.2.1.14 Enterobacter sp. NRG-4 AAY67797.1 Q4PZF3  
 endoglycosidase (EndoE;NdoE) 3.2.1.96 Enterococcus faecalis HER1044 AAR20477.1 Q6U890  
 bifunctional endo-β-N-acetylglucosaminidase / exo-β-N-acetylglucosaminidase (EndoE;OG1RF_10107) 3.2.1.52
3.2.1.96
Enterococcus faecalis OG1RF AEA92794.1    
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