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- PDB-3ebv: Crystal structure of putative Chitinase A from Streptomyces coeli... -

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Basic information

Entry
Database: PDB / ID: 3ebv
TitleCrystal structure of putative Chitinase A from Streptomyces coelicolor.
ComponentsChinitase A
Keywordsstructural genomics / unknown function / Chitinase A / ChiA / Glycosidase / Hydrolase / PSI-2 / Protein Structure Initiative / New York SGX Research Center for Structural Genomics / NYSGXRC
Function / homology
Function and homology information


chitinase / chitin binding / polysaccharide catabolic process / hydrolase activity, hydrolyzing O-glycosyl compounds
Similarity search - Function
: / Carbohydrate-binding, CenC-like / Carbohydrate binding domain / Glycosyl hydrolases family 18 (GH18) active site / Glycosyl hydrolases family 18 (GH18) active site signature. / Chitinase II / Glyco_18 / Glycosyl hydrolases family 18 (GH18) domain profile. / Glycosyl hydrolases family 18 / Glycoside hydrolase family 18, catalytic domain ...: / Carbohydrate-binding, CenC-like / Carbohydrate binding domain / Glycosyl hydrolases family 18 (GH18) active site / Glycosyl hydrolases family 18 (GH18) active site signature. / Chitinase II / Glyco_18 / Glycosyl hydrolases family 18 (GH18) domain profile. / Glycosyl hydrolases family 18 / Glycoside hydrolase family 18, catalytic domain / Fibronectin type III domain / Fibronectin type 3 domain / Fibronectin type-III domain profile. / Galactose-binding-like domain superfamily / Fibronectin type III / Fibronectin type III superfamily / Glycosidases / Glycoside hydrolase superfamily / TIM Barrel / Alpha-Beta Barrel / Immunoglobulin-like fold / Alpha Beta
Similarity search - Domain/homology
chitinase / chitinase
Similarity search - Component
Biological speciesStreptomyces coelicolor (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / Resolution: 1.5 Å
AuthorsVigdorovich, V. / Ramagopal, U.A. / Toro, R. / Burley, S.K. / Almo, S.C. / New York SGX Research Center for Structural Genomics (NYSGXRC)
CitationJournal: To be Published
Title: Crystal structure of putative Chitinase A from Streptomyces coelicolor
Authors: Vigdorovich, V. / Ramagopal, U.A. / Toro, R. / Burley, S.K. / Almo, S.C.
History
DepositionAug 28, 2008Deposition site: RCSB / Processing site: RCSB
Revision 1.0Sep 30, 2008Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Version format compliance
Revision 1.2Oct 25, 2017Group: Refinement description / Category: software
Revision 1.3Feb 10, 2021Group: Database references / Derived calculations / Structure summary
Category: audit_author / citation_author ...audit_author / citation_author / struct_conn / struct_site
Item: _audit_author.identifier_ORCID / _citation_author.identifier_ORCID ..._audit_author.identifier_ORCID / _citation_author.identifier_ORCID / _struct_conn.pdbx_leaving_atom_flag / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.4Nov 20, 2024Group: Data collection / Database references / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_entry_details / pdbx_modification_feature
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Chinitase A
hetero molecules


Theoretical massNumber of molelcules
Total (without water)32,1892
Polymers32,0921
Non-polymers961
Water5,386299
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)96.636, 96.636, 124.735
Angle α, β, γ (deg.)90.000, 90.000, 120.000
Int Tables number146
Space group name H-MH3
Components on special symmetry positions
IDModelComponents
11A-432-

HOH

21A-434-

HOH

31A-598-

HOH

Detailsbiological unit appears to be same as asymmetric unit.

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Components

#1: Protein Chinitase A


Mass: 32092.445 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Streptomyces coelicolor (bacteria) / Gene: SCO5003, SCK15.05c / Plasmid: BC-pSGX4(BC) / Production host: Escherichia coli (E. coli) / Strain (production host): BL21(DE3) / References: UniProt: Q9KY99, UniProt: Q9Z9M9*PLUS
#2: Chemical ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: SO4
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 299 / Source method: isolated from a natural source / Formula: H2O
Has protein modificationY

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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: 3.49 Å3/Da / Density % sol: 64.78 %
Crystal growTemperature: 298 K / Method: vapor diffusion, sitting drop / pH: 10.5
Details: 0.1 M CAPS pH 10.5, 2.0 M Ammonium sulfate, 0.2 M Lithium sulfate, Vapor diffusion, Sitting drop, temperature 298K, VAPOR DIFFUSION, SITTING DROP

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: NSLS / Beamline: X29A / Wavelength: 0.979 Å
DetectorType: ADSC QUANTUM 315 / Detector: CCD / Date: Jul 10, 2008
RadiationProtocol: SINGLE WAVELENGTH / Scattering type: x-ray
Radiation wavelengthWavelength: 0.979 Å / Relative weight: 1
ReflectionRedundancy: 3.1 % / Av σ(I) over netI: 15.26 / Number: 435716 / Rmerge(I) obs: 0.054 / Χ2: 1.03 / D res high: 1.5 Å / D res low: 50 Å / Num. obs: 140060 / % possible obs: 99.8
Diffraction reflection shell
Highest resolution (Å)Lowest resolution (Å)% possible obs (%)IDRmerge(I) obsChi squaredRedundancy
3.235099.410.0331.0313.1
2.563.2310010.0521.0493.2
2.242.5610010.0570.993.2
2.042.2410010.0651.0133.2
1.892.0410010.081.0523.2
1.781.8910010.1070.9653.1
1.691.7810010.151.0563.1
1.621.6910010.2011.1063.1
1.551.6210010.2771.0623.1
1.51.5598.810.3891.022.9
ReflectionResolution: 1.5→50 Å / Num. all: 70137 / Num. obs: 70137 / % possible obs: 99.8 % / Redundancy: 6.2 % / Biso Wilson estimate: 16.5 Å2 / Rmerge(I) obs: 0.088 / Rsym value: 0.071 / Χ2: 1.034 / Net I/σ(I): 22.1
Reflection shellResolution: 1.5→1.55 Å / Redundancy: 5.8 % / Rmerge(I) obs: 0.454 / Mean I/σ(I) obs: 4.1 / Num. unique all: 13903 / Rsym value: 0.404 / Χ2: 1.02 / % possible all: 99.9

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Processing

Software
NameVersionClassificationNB
DENZOdata reduction
SCALEPACKdata scaling
REFMACrefinement
PDB_EXTRACT3.006data extraction
CBASSdata collection
HKL-2000data reduction
SHELXDphasing
SHELXEmodel building
CCP4phasing
RefinementResolution: 1.5→28.21 Å / Cor.coef. Fo:Fc: 0.971 / Cor.coef. Fo:Fc free: 0.967 / WRfactor Rfree: 0.186 / WRfactor Rwork: 0.172 / Occupancy max: 1 / Occupancy min: 0.3 / FOM work R set: 0.918 / SU B: 0.769 / SU ML: 0.03 / SU R Cruickshank DPI: 0.05 / SU Rfree: 0.05 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.05 / ESU R Free: 0.05 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.169 3535 5 %RANDOM
Rwork0.156 ---
obs0.157 70126 99.82 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: MASK
Displacement parametersBiso max: 47.55 Å2 / Biso mean: 16.785 Å2 / Biso min: 7.6 Å2
Baniso -1Baniso -2Baniso -3
1-0 Å20 Å20 Å2
2--0 Å20 Å2
3---0 Å2
Refinement stepCycle: LAST / Resolution: 1.5→28.21 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2171 0 5 299 2475
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0160.0222224
X-RAY DIFFRACTIONr_angle_refined_deg1.4631.9443039
X-RAY DIFFRACTIONr_dihedral_angle_1_deg5.5625304
X-RAY DIFFRACTIONr_dihedral_angle_2_deg35.16225.29485
X-RAY DIFFRACTIONr_dihedral_angle_3_deg10.32715341
X-RAY DIFFRACTIONr_dihedral_angle_4_deg11.632156
X-RAY DIFFRACTIONr_chiral_restr0.1030.2351
X-RAY DIFFRACTIONr_gen_planes_refined0.0080.021683
X-RAY DIFFRACTIONr_nbd_refined0.2080.21070
X-RAY DIFFRACTIONr_nbtor_refined0.3080.21582
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.1180.2189
X-RAY DIFFRACTIONr_symmetry_vdw_refined0.2050.223
X-RAY DIFFRACTIONr_symmetry_hbond_refined0.1370.218
X-RAY DIFFRACTIONr_mcbond_it1.0321.51489
X-RAY DIFFRACTIONr_mcangle_it1.51522338
X-RAY DIFFRACTIONr_scbond_it2.3143841
X-RAY DIFFRACTIONr_scangle_it3.5374.5695
LS refinement shellResolution: 1.495→1.534 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.275 252 -
Rwork0.24 4829 -
all-5081 -
obs--97.92 %

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