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- PDB-3a4x: Crystal structures of catalytic site mutants of active domain 2 o... -

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Basic information

Entry
Database: PDB / ID: 3a4x
TitleCrystal structures of catalytic site mutants of active domain 2 of thermostable chitinase from Pyrococcus furiosus complexed with chito-oligosaccharides
ComponentsChitinase
KeywordsHYDROLASE / archaea / chitinase / glycosyl hydrolase
Function / homology
Function and homology information


chitinase activity / chitin catabolic process / polysaccharide binding / chitin binding / carbohydrate metabolic process / extracellular region
Similarity search - Function
Cellulose binding domain / Carbohydrate-binding type-2 domain / CBM2 (Carbohydrate-binding type-2) domain profile. / CBD_II / CBM2, carbohydrate-binding domain superfamily / CBM2/CBM3, carbohydrate-binding domain superfamily / Chitinase insertion domain superfamily / Chitinase II / Glyco_18 / Glycosyl hydrolases family 18 (GH18) domain profile. ...Cellulose binding domain / Carbohydrate-binding type-2 domain / CBM2 (Carbohydrate-binding type-2) domain profile. / CBD_II / CBM2, carbohydrate-binding domain superfamily / CBM2/CBM3, carbohydrate-binding domain superfamily / Chitinase insertion domain superfamily / Chitinase II / Glyco_18 / Glycosyl hydrolases family 18 (GH18) domain profile. / Glycoside hydrolase family 18, catalytic domain / Glycosyl hydrolases family 18 / Glycosidases / Glycoside hydrolase superfamily / TIM Barrel / Alpha-Beta Barrel / Alpha Beta
Similarity search - Domain/homology
Biological speciesPyrococcus furiosus (archaea)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.76 Å
AuthorsTsuji, H. / Nishimura, S. / Inui, T. / Ishikawa, K. / Nakamura, T. / Uegaki, K.
CitationJournal: Febs J. / Year: 2010
Title: Kinetic and crystallographic analyses of the catalytic domain of chitinase from Pyrococcus furiosus- the role of conserved residues in the active site
Authors: Tsuji, H. / Nishimura, S. / Inui, T. / Kado, Y. / Ishikawa, K. / Nakamura, T. / Uegaki, K.
History
DepositionJul 22, 2009Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Jun 9, 2010Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Version format compliance
Revision 2.0Jul 29, 2020Group: Advisory / Atomic model ...Advisory / Atomic model / Data collection / Database references / Derived calculations / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / database_PDB_caveat / entity / pdbx_branch_scheme / pdbx_chem_comp_identifier / pdbx_entity_branch / pdbx_entity_branch_descriptor / pdbx_entity_branch_link / pdbx_entity_branch_list / pdbx_entity_nonpoly / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / pdbx_validate_chiral / struct_asym / struct_conn / struct_ref_seq_dif / struct_site / struct_site_gen
Item: _atom_site.B_iso_or_equiv / _atom_site.Cartn_x ..._atom_site.B_iso_or_equiv / _atom_site.Cartn_x / _atom_site.Cartn_y / _atom_site.Cartn_z / _atom_site.auth_asym_id / _atom_site.auth_atom_id / _atom_site.auth_comp_id / _atom_site.auth_seq_id / _atom_site.label_asym_id / _atom_site.label_atom_id / _atom_site.label_comp_id / _atom_site.label_entity_id / _atom_site.type_symbol / _chem_comp.name / _chem_comp.type / _pdbx_struct_assembly_gen.asym_id_list / _pdbx_validate_chiral.auth_asym_id / _pdbx_validate_chiral.auth_seq_id / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_ref_seq_dif.details
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 2.1Nov 1, 2023Group: Data collection / Database references ...Data collection / Database references / Refinement description / Structure summary
Category: chem_comp / chem_comp_atom ...chem_comp / chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model
Item: _chem_comp.pdbx_synonyms / _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Chitinase
B: Chitinase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)71,70712
Polymers69,4402
Non-polymers2,26710
Water11,548641
1
A: Chitinase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)35,8566
Polymers34,7201
Non-polymers1,1355
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
2
B: Chitinase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)35,8526
Polymers34,7201
Non-polymers1,1315
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)89.816, 91.943, 107.100
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

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Protein / Sugars , 2 types, 4 molecules AB

#1: Protein Chitinase


Mass: 34720.215 Da / Num. of mol.: 2 / Fragment: catalytic domain (AD2), UNP residues 409-717 / Mutation: D524A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Pyrococcus furiosus (archaea) / Gene: PF1233 / Plasmid: pET32 / Production host: Escherichia coli (E. coli) / References: UniProt: Q8U1H5, chitinase
#2: Polysaccharide 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2- ...2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-alpha-D-glucopyranose


Type: oligosaccharide / Mass: 830.786 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-4DGlcpNAcb1-4DGlcpNAca1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/2,4,3/[a2122h-1a_1-5_2*NCC/3=O][a2122h-1b_1-5_2*NCC/3=O]/1-2-2-2/a4-b1_b4-c1_c4-d1WURCSPDB2Glycan 1.1.0
[][a-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-ManpNAc]{[(4+1)][b-D-GlcpNAc]{}}}}LINUCSPDB-CARE

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Non-polymers , 4 types, 649 molecules

#3: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Mg
#4: Chemical ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: SO4
#5: Chemical
ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL


Mass: 92.094 Da / Num. of mol.: 5 / Source method: obtained synthetically / Formula: C3H8O3
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 641 / Source method: isolated from a natural source / Formula: H2O

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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: 3.18 Å3/Da / Density % sol: 61.37 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop / pH: 6
Details: VAPOR DIFFUSION, HANGING DROP, pH6.0, temperature 298K
Temp details: 1.6M MgSO4

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Data collection

Diffraction sourceSource: SYNCHROTRON / Site: SPring-8 / Beamline: BL44XU / Wavelength: 0.9 Å
DetectorType: Bruker DIP-6040 / Detector: CCD / Date: Jun 2, 2009
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.9 Å / Relative weight: 1
ReflectionResolution: 1.76→50 Å / Num. obs: 88323

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Processing

SoftwareName: REFMAC / Version: 5.1 / Classification: refinement
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 2DSK

2dsk


Resolution: 1.76→37.76 Å / Cor.coef. Fo:Fc: 0.96 / Cor.coef. Fo:Fc free: 0.948 / SU B: 1.453 / SU ML: 0.047 / Cross valid method: THROUGHOUT / ESU R: 0.083 / ESU R Free: 0.081 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.17388 4399 5 %RANDOM
Rwork0.15265 ---
obs0.15371 83308 99.44 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso mean: 11.425 Å2
Baniso -1Baniso -2Baniso -3
1-0 Å20 Å20 Å2
2--0 Å20 Å2
3---0 Å2
Refinement stepCycle: LAST / Resolution: 1.76→37.76 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms4760 0 151 641 5552
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0110.0225135
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg1.4141.987016
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg5.8995620
X-RAY DIFFRACTIONr_dihedral_angle_2_deg35.19724.444234
X-RAY DIFFRACTIONr_dihedral_angle_3_deg11.63815789
X-RAY DIFFRACTIONr_dihedral_angle_4_deg21.6391520
X-RAY DIFFRACTIONr_chiral_restr0.1490.2773
X-RAY DIFFRACTIONr_gen_planes_refined0.0060.0213886
X-RAY DIFFRACTIONr_gen_planes_other
X-RAY DIFFRACTIONr_nbd_refined
X-RAY DIFFRACTIONr_nbd_other
X-RAY DIFFRACTIONr_nbtor_refined
X-RAY DIFFRACTIONr_nbtor_other
X-RAY DIFFRACTIONr_xyhbond_nbd_refined
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined
X-RAY DIFFRACTIONr_symmetry_vdw_other
X-RAY DIFFRACTIONr_symmetry_hbond_refined
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it0.5641.53025
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it1.08724908
X-RAY DIFFRACTIONr_scbond_it1.85132110
X-RAY DIFFRACTIONr_scangle_it3.0834.52097
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 1.761→1.807 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.24 311 -
Rwork0.196 5693 -
obs--93.7 %

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