Glycoside Hydrolase Family 19

Activities in Familychitinase (EC 3.2.1.14); lysozyme (EC 3.2.1.17)
Mechanism Inverting
Catalytic Nucleophile/BaseNot known
Catalytic Proton DonorNot known
NoteContains chitinases of classes I, II, and IV.
External resourcesCAZypedia; HOMSTRAD; PROSITE;
Statistics GenBank accession (5601); Uniprot accession (970); PDB accession (28); 3D entries (16); cryst (0)
All (4745) Bacteria (3396) Eukaryota (838) Viruses (509) unclassified (2) Structure (16) Characterized (176)
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Eukaryota
Protein Name EC#OrganismGenBank UniprotPDB/3D
 EMIHUDRAFT_463778   Emiliania huxleyi CCMP1516 EOD21789.1    
 ECU09_1320   Encephalitozoon cuniculi GB-M1 AGE96502.1
CAD27103.1
NP_597055.1
Q8STP5  
 EHEL_091360   Encephalitozoon hellem ATCC 50504 AFM99030.1    
 Eint_091390   Encephalitozoon intestinalis ATCC 50506 ADM12267.1 E0S902  
 EROM_090700   Encephalitozoon romaleae SJ-2008 AFN83687.1    
 Chi1   Epipremnum aureum BAI63079.1 D2KZ17  
 Chit1   Eucommia ulmoides AHX74092.1    
 CHIT2   Eucommia ulmoides AHX74093.1    
 chitinase (Ee-chitinase)   Euonymus europaeus AAP35272.1
AAP35271.1
Q7X9R8
Q7Y237
 
 Ee-CBPl   Euonymus europaeus AAP35270.1 Q7X9R9  
 antimicrobial peptide (Ee-CBPb)   Euonymus europaeus AAP35269.1 Q7Y238  
 chitinase   Euphorbia tirucalli BAV60252.1    
 unnamed protein product   Eutrema halophilum BAJ33659.1 E4MVM6  
 unnamed protein product   Eutrema halophilum BAJ33936.1 E4MWF3  
 unnamed protein product   Eutrema halophilum BAJ34362.1 E4MXM9  
 class I chitinase (Chit1)   Festuca arundinacea ACJ23248.1 B8R3R6  
 chitinase (Chi)   Ficus carica AAO17294.1 Q84LK1  
 chitinase (probable fragment)   Ficus pumila var. awkeotsang ABB86300.1 Q2VAC7  
 class IV chitinase (Chi4-2;FaCHI4-2)   Fragaria x ananassa AET44160.1    
 chitinase (Chi2-1)   Fragaria x ananassa ABU55294.1
ABQ42593.1
ACJ46583.1
A5JW48
B2X051
 
 chitinase (Chi2-2) 3.2.1.14 Fragaria x ananassa AAG37276.1
AAL16893.1
Q944U5
Q9FPM1
 
 Go-cht1b2   Galega orientalis AAP03089.1 Q7X9F4  
 Go-cht1a   Galega orientalis AAP03088.1 Q7X9F5  
 cht1b   Galega orientalis AAP03087.1 Q7X9F6  
 chtIV   Galega orientalis AAP03085.1 Q7X9F8  
 chitinase A (ChiA;BcChiA;BcChi-A) 3.2.1.14 Gemmabryum coronatum BAF99002.1 A9ZSX9 3WH1[A]
4IJ4[A]
 unknown   Glycine max ACU16135.1 C6T397  
 unknown   Glycine max ACU17801.1 C6T7J9  
 unknown   Glycine max ACU18968.1 C6TAW6  
 unknown   Glycine max ACU19724.1 C6TD22  
 unknown (fragment)   Glycine max ACU21548.1 C6TI96  
 unknown   Glycine max ACU22808.1 C6TIR8  
 unknown   Glycine max ACU23323.1 C6TK83  
 chitinase (ChiA1;ChN1) 3.2.1.14 Glycine max AAK01734.1
AAF17593.1
Q9SDY6  
 chitinase class I (Chi1) (fragment)   Glyptostrobus pensilis BAB91496.1 Q8LSU2  
 CLT4   Gossypium barbadense ABL86686.1 B5G510  
 CLT1 (fragment)   Gossypium barbadense ABL86683.1 B5G507  
 CLT2 (fragment)   Gossypium barbadense ABL86684.1 B5G508  
 CLT3   Gossypium barbadense ABL86685.1 B5G509  
 ORF (fragment)   Gossypium barbadense AAQ84319.1 Q6UA09  
 class IV chitinase   Gossypium barbadense AER29902.1    
 chitinase (Chia7)   Gossypium hirsutum AAP80801.1
AAP80800.1
Q7X7Q1  
 chitinase 3.2.1.14 Gossypium hirsutum CAA92277.1 P93154  
 chitinase 3.2.1.14 Gossypium hirsutum AAD11255.1 Q9ZTT8  
 chitinase 1 3.2.1.14 Gossypium hirsutum AAB67842.1
ADI56257.1
D7RTU7
Q39799
 
 chitinase 2 3.2.1.14 Gossypium hirsutum AAB68047.1
AAB01339.1
Q39785  
 chitinase-like protein (Ctl1)   Gossypium hirsutum AAQ56598.1
ABJ34489.1
Q6JX04  
 chitinase-like protein (Ctl2)   Gossypium hirsutum AAQ56599.1
ABJ34490.1
Q6JX03  
 chitinase (fragment)   Halimolobos perplexus var. perplexus AAF69782.1 Q9M7G5  
 chitinase (fragment)   Helianthus annuus AAB57694.1 O04222  
 chitinase-1 (Chi-1)   Heligmosomoides polygyrus bakeri CCC54338.1    
 chitinase-like protein 2 (Clp2;HbCLP2;Chi-L2;LaCIC;Hev b 11.0102)   Hevea brasiliensis AHF88837.1
CAD24068.1
   
 chitinase-like protein 1 / allergen (Rq30;Clp1;Chi-L1;HbCLP1;Hev b 11.0101)   Hevea brasiliensis AHF88836.1
CAC42881.1
Q949H3 4MST[A,B]
 class 1 chitinase   Hippophae rhamnoides ADP68560.1 E5FQ61  
 class I chitinase (Chi1;HrChi1)   Hippophae rhamnoides AFC88126.1    
 chitinase (CHI) (fragment)   Hordeum bulbosum CAB77452.1 Q9M3Q2  
 chitinase (CHI) (fragment)   Hordeum bulbosum CAB77450.1 Q9M3Q4  
 chitinase (CHI) (fragment)   Hordeum bulbosum CAB77449.1 Q9M3Q5  
 chitinase (CHI) (fragment)   Hordeum chilense CAB77456.1 Q9M3N8  
 chitinase (CHI) (fragment)   Hordeum chilense CAB77455.1 Q9M3N9  
 chitinase (CHI) (fragment)   Hordeum chilense CAB77454.1 Q9M3P0  
 chitinase (CHI) (fragment)   Hordeum chilense CAB77453.1 Q9M3P1  
 chitinase (CHI) (fragment)   Hordeum marinum subsp. gussoneanum CAB77518.1 Q9M3P5  
 chitinase (CHI) (fragment)   Hordeum marinum subsp. marinum CAB77517.1 Q9M3P6  
 chitinase (CHI) (fragment)   Hordeum marinum subsp. marinum CAB77516.1 Q9M3P7  
 chitinase (CHI) (fragment)   Hordeum murinum subsp. glaucum CAB77520.1 Q9M3R1  
 chitinase (CHI) (fragment)   Hordeum murinum subsp. glaucum CAB77519.1 Q9M3R2  
 chitinase (CHI) (fragment)   Hordeum murinum subsp. leporinum CAB77521.1
CAB77522.1
Q9M3Q9  
 chitinase (CHI) (fragment)   Hordeum murinum subsp. murinum CAB77525.1 Q9M3Q6  
 chitinase (CHI) (fragment)   Hordeum murinum subsp. murinum CAB77524.1 Q9M3Q7  
 chitinase (CHI) (fragment)   Hordeum murinum subsp. murinum CAB77523.1 Q9M3Q8  
 chitinase CHI (fragment)   Hordeum secalinum CAB77670.1
CAB77668.1
CAB77669.1
Q9M3P2
Q9M3P3
Q9M3P4
 
 chitinase 3.2.1.14 Hordeum vulgare AAA18586.1
CAA33407.1
P11955 1CNS[A,B]
2BAA[A]
 chitinase-26 (Chi26) 3.2.1.14 Hordeum vulgare AAA32941.1
AAA56786.1
AAE52538.1
BAK08350.1
CAA02316.1
P23951  
 chitinase-33 (Chi33) 3.2.1.14 Hordeum vulgare AAA56787.1
BAK04967.1
Q42839  
 chitinase, partial (fragment)   Hordeum vulgare AGS38341.1    
 chitinase (Cht2A) 3.2.1.14 Hordeum vulgare subsp. vulgare CAA55344.1
BAJ95335.1
BAJ99050.1
F2DJR4
Q43764
 
 chitinase II (Cht2B;PR-3;NIASHv1004G18) 3.2.1.14 Hordeum vulgare subsp. vulgare BAJ85236.1
ACJ68105.1
CAA55345.1
Q43765  
 NIASHv2116M17   Hordeum vulgare subsp. vulgare BAK01982.1    
 predicted protein   Hordeum vulgare subsp. vulgare BAK08163.1    
 predicted protein   Hordeum vulgare subsp. vulgare BAK00996.1    
 chitinase II (Cht2)   Hordeum vulgare subsp. vulgare CAB99486.1    
 chitinase (CHI) (fragment)   Hordeum vulgare subsp. vulgare CAB77546.1 Q9M3Q0  
 chitinase (CHI) (fragment)   Hordeum vulgare subsp. vulgare CAB77545.1 Q9M3Q1  
 Chi26 (fragment)   Hordeum vulgare subsp. vulgare AEF56931.1    
 chitinase (HCH1) 3.2.1.14 Humulus lupulus AAD34596.1 Q9XFK6  
 ORF (fragment)   Humulus lupulus AAW33783.1 Q5I6L0  
 ItChiB (fragment)   Isatis tinctoria ACI23385.1 C3S7U7  
 chitinase   Lactuca sativa ACX94236.1 D0QU15  
 chitinase (KBchit5-3-1)   Leucaena leucocephala DE WIT AAM77665.1 Q8LK49  
 chitinase (KB1) 3.2.1.14 Leucaena leucocephala DE WIT (LEUCOPLAST) AAM49597.2 Q8MD06  
 chitinase   Leymus chinensis ACV20870.1 C8CG67  
 chitinase 1, partial (fragment)   Lilium longiflorum AIR76996.1    
 chitinase 2, partial (fragment)   Lilium longiflorum AIR77004.1    
 class Ib chitinase (Chi31;LbChi31) 3.2.1.14 Limonium bicolor ACE79210.1
ABD92819.1
B3VFX0  
 class I chitinase (Chi32;LbCHI32)   Limonium bicolor ABD92820.1
ACE79211.1
Q1W6C4  
 chitinase (ChiF;LuChiF) (fragment)   Linum usitatissimum ABA39179.1
AAB53223.1
O04881
Q3HUM0
 
 chitinase (Chit) (fragment)   Linum usitatissimum AAW31878.1 Q5I707  
 pathogenesis-related protein 3-1 (Pr3-1) (fragment)   Lolium perenne AEO11772.1    
 pathogenesis-related protein 3-2 (Pr3-2) (fragment)   Lolium perenne AEO11773.1    
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