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- PDB-1gs6: Crystal structure of M144A mutant of Alcaligenes xylosoxidans Nit... -

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Basic information

Entry
Database: PDB / ID: 1gs6
TitleCrystal structure of M144A mutant of Alcaligenes xylosoxidans Nitrite Reductase
ComponentsDISSIMILATORY COPPER-CONTAINING NITRITE REDUCTASE
KeywordsOXIDOREDUCTASE / MULTICOPPER / PERIPLASMIC
Function / homology
Function and homology information


denitrification pathway / nitrite reductase (NO-forming) / nitrite reductase (NO-forming) activity / nitrate assimilation / periplasmic space / copper ion binding
Similarity search - Function
Nitrite reductase, copper-type / Multicopper oxidase / Multicopper oxidase, type 1 / Multicopper oxidase / Multicopper oxidase, N-terminal / Multicopper oxidase / Cupredoxins - blue copper proteins / Cupredoxin / Immunoglobulin-like / Sandwich / Mainly Beta
Similarity search - Domain/homology
COPPER (II) ION / Copper-containing nitrite reductase
Similarity search - Component
Biological speciesALCALIGENES XYLOSOXIDANS (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.2 Å
AuthorsEllis, M.J. / Prudencio, M. / Dodd, F.E. / Strange, R.W. / Sawers, G. / Eady, R.R. / Hasnain, S.S.
CitationJournal: J.Mol.Biol. / Year: 2002
Title: Biochemical and Crystallographic Studies of the met144Ala, Asp92Asn and His254Phe Mutants of the Nitrite Reductase from Alcaligenes Xylosoxidans Provide Insight Into the Enzyme Mechanism.
Authors: Ellis, M.J. / Prudencio, M. / Dodd, F.E. / Strange, R.W. / Sawers, G. / Eady, R.R. / Hasnain, S.S.
History
DepositionJan 2, 2002Deposition site: PDBE / Processing site: PDBE
Revision 1.0Feb 14, 2002Provider: repository / Type: Initial release
Revision 1.1May 9, 2012Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Non-polymer description / Other / Structure summary / Version format compliance
Revision 1.2Apr 15, 2015Group: Database references
Revision 1.3Dec 13, 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 / pdbx_struct_conn_angle / struct_conn / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr1_symmetry / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.ptnr3_symmetry / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr1_symmetry / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_conn.ptnr2_label_seq_id / _struct_conn.ptnr2_symmetry / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Remark 700 SHEET THE SHEET STRUCTURE OF THIS MOLECULE IS BIFURCATED. IN ORDER TO REPRESENT THIS FEATURE IN ... SHEET THE SHEET STRUCTURE OF THIS MOLECULE IS BIFURCATED. IN ORDER TO REPRESENT THIS FEATURE IN THE SHEET RECORDS BELOW, TWO SHEETS ARE DEFINED.

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Structure visualization

Structure viewerMolecule:
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Assembly

Deposited unit
X: DISSIMILATORY COPPER-CONTAINING NITRITE REDUCTASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)36,6624
Polymers36,5101
Non-polymers1513
Water2,756153
1
X: DISSIMILATORY COPPER-CONTAINING NITRITE REDUCTASE
hetero molecules

X: DISSIMILATORY COPPER-CONTAINING NITRITE REDUCTASE
hetero molecules

X: DISSIMILATORY COPPER-CONTAINING NITRITE REDUCTASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)109,98512
Polymers109,5313
Non-polymers4549
Water543
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation3_565-x+y,-x+1,z1
crystal symmetry operation2_665-y+1,x-y+1,z1
Buried area14340 Å2
ΔGint-157.8 kcal/mol
Surface area35250 Å2
MethodPISA
Unit cell
Length a, b, c (Å)106.860, 106.860, 64.026
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number173
Space group name H-MP63

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Components

#1: Protein DISSIMILATORY COPPER-CONTAINING NITRITE REDUCTASE / NITRITE REDUCTASE / NIR


Mass: 36510.410 Da / Num. of mol.: 1 / Mutation: YES
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) ALCALIGENES XYLOSOXIDANS (bacteria) / Strain: N.C.I.M.B. 11015 / Plasmid: PENIRM144A / Production host: ESCHERICHIA COLI (E. coli) / Strain (production host): BL21
References: UniProt: O68601, EC: 1.7.99.3, nitrite reductase (NO-forming)
#2: Chemical ChemComp-CU / COPPER (II) ION / Copper


Mass: 63.546 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Cu
#3: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg
#4: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 153 / Source method: isolated from a natural source / Formula: H2O
Compound detailsENGINEERED MUTATION: MET (144) ALA

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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: 3.07 Å3/Da / Density % sol: 59.6 % / Description: COLLECTED USING OSCILLATION METHOD
Crystal growpH: 8.5
Details: 30% PEG 4000, 0.1M MGCL2, 0.1M TRIS-HCL PH8.5, TEMP GRADIENT 4-32 DEGREES C, pH 8.50

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Data collection

DiffractionMean temperature: 294 K
Diffraction sourceSource: SYNCHROTRON / Site: SRS / Beamline: PX9.6 / Wavelength: 0.87
DetectorType: ADSC CCD / Detector: CCD / Date: Oct 15, 1999 / Details: RH COATED SI MIRROR
RadiationMonochromator: SINGLE CRYSTAL SI MONOCHROMATOR / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.87 Å / Relative weight: 1
ReflectionResolution: 2.2→20 Å / Num. obs: 27656 / % possible obs: 99.4 % / Observed criterion σ(I): 2 / Redundancy: 2.9 % / Rmerge(I) obs: 0.097 / Net I/σ(I): 11.2
Reflection shellResolution: 2.2→2.32 Å / Redundancy: 2.7 % / Rmerge(I) obs: 0.32 / Mean I/σ(I) obs: 2.4 / % possible all: 99.4

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Processing

Software
NameVersionClassification
REFMAC5refinement
MOSFLMdata reduction
SCALEPACKdata scaling
AMoREphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDN ENTRY 1NDT

1ndt


Resolution: 2.2→60 Å / Cor.coef. Fo:Fc: 0.966 / Cor.coef. Fo:Fc free: 0.95 / SU B: 5.786 / SU ML: 0.149 / Cross valid method: THROUGHOUT / ESU R: 0.172 / ESU R Free: 0.146 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.181 1058 5 %RANDOM
Rwork0.148 ---
obs0.15 20082 99.2 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: BABINET MODEL WITH MASK
Refinement stepCycle: LAST / Resolution: 2.2→60 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2572 0 3 153 2728
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0330.0212511
X-RAY DIFFRACTIONr_bond_other_d0.0020.022225
X-RAY DIFFRACTIONr_angle_refined_deg
X-RAY DIFFRACTIONr_angle_other_deg2.5081.9363433
X-RAY DIFFRACTIONr_dihedral_angle_1_deg
X-RAY DIFFRACTIONr_dihedral_angle_2_deg
X-RAY DIFFRACTIONr_dihedral_angle_3_deg1.52535148
X-RAY DIFFRACTIONr_dihedral_angle_4_deg
X-RAY DIFFRACTIONr_chiral_restr0.180.2382
X-RAY DIFFRACTIONr_gen_planes_refined0.0160.022866
X-RAY DIFFRACTIONr_gen_planes_other0.0060.02493
X-RAY DIFFRACTIONr_nbd_refined0.2050.3369
X-RAY DIFFRACTIONr_nbd_other0.2130.31867
X-RAY DIFFRACTIONr_nbtor_refined
X-RAY DIFFRACTIONr_nbtor_other0.220.51
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.1420.5184
X-RAY DIFFRACTIONr_xyhbond_nbd_other0.19703
X-RAY DIFFRACTIONr_metal_ion_refined0.0703
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined0.1710.311
X-RAY DIFFRACTIONr_symmetry_vdw_other0.1850.369
X-RAY DIFFRACTIONr_symmetry_hbond_refined0.2060.511
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it1.5571.51638
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it2.60422618
X-RAY DIFFRACTIONr_mcangle_other
X-RAY DIFFRACTIONr_scbond_it3.7643873
X-RAY DIFFRACTIONr_scbond_other
X-RAY DIFFRACTIONr_scangle_it5.4174.5815
X-RAY DIFFRACTIONr_scangle_other
X-RAY DIFFRACTIONr_long_range_B_refined
X-RAY DIFFRACTIONr_long_range_B_other
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 2.2→2.26 Å / Total num. of bins used: 20 /
RfactorNum. reflection
Rfree0.253 57
Rwork0.187 1505

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