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- PDB-3as1: Crystal Structure Analysis of Chitinase A from Vibrio harveyi wit... -

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Basic information

Entry
Database: PDB / ID: 3as1
TitleCrystal Structure Analysis of Chitinase A from Vibrio harveyi with novel inhibitors - W275G mutant complex structure with chelerythrine
ComponentsChitinase A
KeywordsHYDROLASE/HYDROLASE INHIBITOR / TIM BARREL / INHIBITOR COMPLEX / GLYCOSIDASE / HYDROLASE / HYDROLASE-HYDROLASE INHIBITOR complex
Function / homology
Function and homology information


chitinase activity / chitinase / chitin catabolic process / chitin binding / polysaccharide catabolic process / carbohydrate binding / extracellular region
Similarity search - Function
Chitinase A N-terminal / Chitinase A, N-terminal domain / K319L-like, PKD domain / Carbohydrate-binding module family 5/12 / PKD domain / Carbohydrate-binding module family 5/12 / Carbohydrate-binding module superfamily 5/12 / PKD domain / PKD domain superfamily / PKD/Chitinase domain ...Chitinase A N-terminal / Chitinase A, N-terminal domain / K319L-like, PKD domain / Carbohydrate-binding module family 5/12 / PKD domain / Carbohydrate-binding module family 5/12 / Carbohydrate-binding module superfamily 5/12 / PKD domain / PKD domain superfamily / PKD/Chitinase domain / Repeats in polycystic kidney disease 1 (PKD1) and other proteins / Chitinase A; domain 3 - #10 / Glycosyl hydrolases family 18 (GH18) active site / Glycosyl hydrolases family 18 (GH18) active site signature. / : / Chitinase insertion domain superfamily / Chitinase II / Glyco_18 / Glycosyl hydrolases family 18 (GH18) domain profile. / Glycosyl hydrolases family 18 / Glycoside hydrolase family 18, catalytic domain / Chitinase A; domain 3 / Glycosidases / Immunoglobulin E-set / Glycoside hydrolase superfamily / TIM Barrel / Alpha-Beta Barrel / Roll / Immunoglobulin-like fold / Immunoglobulins / Immunoglobulin-like / Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
Chem-CTI / chitinase
Similarity search - Component
Biological speciesVibrio harveyi (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2 Å
AuthorsPantoom, S. / Vetter, I.R. / Prinz, H. / Suginta, W.
Citation
Journal: J.Biol.Chem. / Year: 2011
Title: Potent family-18 chitinase inhibitors: x-ray structures, affinities, and binding mechanisms
Authors: Pantoom, S. / Vetter, I.R. / Prinz, H. / Suginta, W.
#1: Journal: J.Struct.Biol. / Year: 2008
Title: Crystal structures of Vibrio harveyi chitinase A complexed with chitooligosaccharides: implications for the catalytic mechanism
Authors: Songsiriritthigul, C. / Pantoom, S. / Aguda, A.H. / Robinson, R.C. / Suginta, W.
History
DepositionDec 9, 2010Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Apr 20, 2011Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Version format compliance
Revision 1.2Jan 29, 2014Group: Database references
Revision 1.3Nov 1, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / struct_ref_seq_dif / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.4Nov 20, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature / Item: _pdbx_entry_details.has_protein_modification

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Chitinase A
hetero molecules


Theoretical massNumber of molelcules
Total (without water)64,5014
Polymers63,7131
Non-polymers7893
Water8,269459
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)67.370, 83.610, 103.770
Angle α, β, γ (deg.)90.000, 90.000, 90.000
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein Chitinase A


Mass: 63712.621 Da / Num. of mol.: 1 / Fragment: residues 22-597 / Mutation: W275G
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Vibrio harveyi (bacteria) / Strain: LMG7890 / Gene: CHIA / Plasmid: pQE60 / Production host: Escherichia coli (E. coli) / Strain (production host): M15 / References: UniProt: Q9AMP1, chitinase
#2: Chemical ChemComp-CTI / 1,2-dimethoxy-12-methyl[1,3]benzodioxolo[5,6-c]phenanthridin-12-ium / chelerythrine


Mass: 348.372 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C21H18NO4 / Comment: inhibitor, alkaloid*YM
#3: Chemical ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL


Mass: 92.094 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C3H8O3
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 459 / Source method: isolated from a natural source / Formula: H2O
Has protein modificationY
Nonpolymer detailsCTI A 607 IS WEAK BINDING SITE

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2.29 Å3/Da / Density % sol: 46.37 %
Crystal growTemperature: 293 K / Method: hanging drop / pH: 5.5
Details: 26%(w/v) PEG 4000, 0.2M Ammonium Acetate, 0.1M Sodium Acetate, pH 5.5, hanging drop, temperature 293K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: SLS / Beamline: X10SA / Wavelength: 0.87933 Å
DetectorType: MARMOSAIC 225 mm CCD / Detector: CCD / Date: Apr 4, 2009
RadiationMonochromator: SI(111) MONOCHROMATOR / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.87933 Å / Relative weight: 1
ReflectionResolution: 2→19.956 Å / Num. obs: 40228 / % possible obs: 99.8 % / Observed criterion σ(I): -3 / Biso Wilson estimate: 24.202 Å2 / Rmerge(I) obs: 0.135 / Net I/σ(I): 12.88
Reflection shell

Diffraction-ID: 1

Resolution (Å)Highest resolution (Å)Rmerge F obsRmerge(I) obsMean I/σ(I) obsNum. measured obsNum. possibleNum. unique obsRrim(I) all% possible all
2-2.050.3340.516520354293429300.55699.9
2.05-2.110.2750.4445.819872287628740.47899.9
2.11-2.170.2220.3696.719455278727870.398100
2.17-2.240.2040.3177.718762269626960.342100
2.24-2.310.1770.2858.518351263226310.308100
2.31-2.390.1550.2479.217746255525550.267100
2.39-2.480.1440.231016996245724540.24999.9
2.48-2.580.120.1991116380236423640.215100
2.58-2.70.1050.1811.915941229922990.194100
2.7-2.830.0870.15413.415061217021690.166100
2.83-2.980.0770.13914.714438208620850.15100
2.98-3.160.0710.12515.913567197419720.13599.9
3.16-3.380.060.1081812629185018490.11799.9
3.38-3.650.0480.0920.811789173717350.09799.9
3.65-40.0430.08222.610720161216060.08899.6
4-4.470.0350.07124.29703146314590.07799.7
4.47-5.160.0350.06724.78640130613040.07299.8
5.16-6.320.0360.06923.27252110911080.07599.9
6.32-8.940.0320.06524.456048848840.071100
8.940.0260.05426.327615244670.05889.1

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Processing

Software
NameVersionClassificationNB
XSCALEdata scaling
REFMAC5.6.0093refinement
PDB_EXTRACT3.1data extraction
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 3b9a

3b9a


Resolution: 2→19.956 Å / Cor.coef. Fo:Fc: 0.959 / Cor.coef. Fo:Fc free: 0.926 / WRfactor Rfree: 0.2 / WRfactor Rwork: 0.1487 / Occupancy max: 1 / Occupancy min: 0.5 / FOM work R set: 0.8812 / SU B: 3.301 / SU ML: 0.094 / SU R Cruickshank DPI: 0.1618 / SU Rfree: 0.1505 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R Free: 0.151 / Stereochemistry target values: MAXIMUM LIKELIHOOD
Details: HYDROGENS HAVE BEEN USED IF PRESENT IN THE INPUT U VALUES: REFINED INDIVIDUALLY
RfactorNum. reflection% reflectionSelection details
Rfree0.2053 2012 5 %RANDOM
Rwork0.153 ---
obs0.1556 40227 99.77 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso max: 138.5 Å2 / Biso mean: 19.6941 Å2 / Biso min: 6.79 Å2
Baniso -1Baniso -2Baniso -3
1--0.1 Å20 Å20 Å2
2--0.04 Å20 Å2
3---0.06 Å2
Refinement stepCycle: LAST / Resolution: 2→19.956 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms4359 0 58 459 4876
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0250.0224637
X-RAY DIFFRACTIONr_angle_refined_deg1.8621.9616337
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.4615598
X-RAY DIFFRACTIONr_dihedral_angle_2_deg38.58325.403211
X-RAY DIFFRACTIONr_dihedral_angle_3_deg14.47115711
X-RAY DIFFRACTIONr_dihedral_angle_4_deg12.321511
X-RAY DIFFRACTIONr_chiral_restr0.1710.2658
X-RAY DIFFRACTIONr_gen_planes_refined0.010.0213636
LS refinement shellResolution: 2→2.051 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.238 134 -
Rwork0.175 2562 -
all-2696 -
obs--99.7 %

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