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- PDB-3rkh: Structure of the Thioalkalivibrio nitratireducens cytochrome c ni... -

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Basic information

Entry
Database: PDB / ID: 3rkh
TitleStructure of the Thioalkalivibrio nitratireducens cytochrome c nitrite reductase in a complex with nitrite (full occupancy)
ComponentsEight-heme nitrite reductase
KeywordsOXIDOREDUCTASE / eight hemes c / nitrite reductase / Tyr-Cys covalent bond
Function / homology
Function and homology information


ammonium ion metabolic process / nitrite reductase (cytochrome; ammonia-forming) / nitrite reductase (cytochrome, ammonia-forming) activity / anaerobic electron transport chain / nitrate assimilation / outer membrane-bounded periplasmic space / heme binding / calcium ion binding
Similarity search - Function
Helix Hairpins - #3080 / Cytochrome c552 / Cytochrome c552 / Flavocytochrome C3; Chain A / Flavocytochrome C3; Chain A, domain 2 / Multiheme cytochrome c family profile. / Butyryl-CoA Dehydrogenase, subunit A, domain 3 / Multiheme cytochrome superfamily / Butyryl-CoA Dehydrogenase, subunit A; domain 3 / Helix Hairpins ...Helix Hairpins - #3080 / Cytochrome c552 / Cytochrome c552 / Flavocytochrome C3; Chain A / Flavocytochrome C3; Chain A, domain 2 / Multiheme cytochrome c family profile. / Butyryl-CoA Dehydrogenase, subunit A, domain 3 / Multiheme cytochrome superfamily / Butyryl-CoA Dehydrogenase, subunit A; domain 3 / Helix Hairpins / Up-down Bundle / Orthogonal Bundle / Mainly Alpha
Similarity search - Domain/homology
HEME C / NITRITE ION / Cytochrome c-552 / Cytochrome c-552
Similarity search - Component
Biological speciesThioalkalivibrio nitratireducens (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.83 Å
AuthorsTrofimov, A.A. / Polyakov, K.M. / Tikhonova, T.V. / Tikhonov, A.V. / Dorovatovskii, P.V. / Popov, V.O.
CitationJournal: Acta Crystallogr.,Sect.D / Year: 2012
Title: Covalent modifications of the catalytic tyrosine in octahaem cytochrome c nitrite reductase and their effect on the enzyme activity.
Authors: Trofimov, A.A. / Polyakov, K.M. / Tikhonova, T.V. / Tikhonov, A.V. / Safonova, T.N. / Boyko, K.M. / Dorovatovskii, P.V. / Popov, V.O.
History
DepositionApr 18, 2011Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jun 15, 2011Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Version format compliance
Revision 1.2Jan 25, 2012Group: Database references
Revision 1.3Mar 28, 2012Group: Database references
Revision 1.4Sep 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 / pdbx_struct_special_symmetry / struct_conn / 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 / _pdbx_struct_conn_angle.ptnr1_auth_asym_id / _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.ptnr2_auth_asym_id / _pdbx_struct_conn_angle.ptnr2_auth_comp_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr2_label_atom_id / _pdbx_struct_conn_angle.ptnr2_label_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_asym_id / _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.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_asym_id / _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.ptnr2_auth_asym_id / _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_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Eight-heme nitrite reductase
B: Eight-heme nitrite reductase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)128,17224
Polymers117,8682
Non-polymers10,30522
Water23,9061327
1
A: Eight-heme nitrite reductase
B: Eight-heme nitrite reductase
hetero molecules

A: Eight-heme nitrite reductase
B: Eight-heme nitrite reductase
hetero molecules

A: Eight-heme nitrite reductase
B: Eight-heme nitrite reductase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)384,51672
Polymers353,6036
Non-polymers30,91466
Water1086
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation6_456z-1/2,-x+1/2,-y+11
crystal symmetry operation12_565-y+1/2,-z+1,x+1/21
Buried area89820 Å2
ΔGint-1177 kcal/mol
Surface area93340 Å2
MethodPISA
Unit cell
Length a, b, c (Å)192.800, 192.800, 192.800
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number198
Space group name H-MP213
Components on special symmetry positions
IDModelComponents
11A-605-

HOH

21A-606-

HOH

31A-609-

HOH

41B-631-

HOH

51B-639-

HOH

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Components

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Protein , 1 types, 2 molecules AB

#1: Protein Eight-heme nitrite reductase


Mass: 58933.777 Da / Num. of mol.: 2 / Fragment: UNP residues 33-551 / Source method: isolated from a natural source
Source: (natural) Thioalkalivibrio nitratireducens (bacteria)
Strain: ALEN 2 / References: UniProt: Q5F2I3, UniProt: L0DSL2*PLUS

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Non-polymers , 5 types, 1349 molecules

#2: Chemical
ChemComp-HEC / HEME C


Mass: 618.503 Da / Num. of mol.: 16 / Source method: obtained synthetically / Formula: C34H34FeN4O4
#3: Chemical ChemComp-NO2 / NITRITE ION


Mass: 46.005 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: NO2
#4: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Ca
#5: Chemical ChemComp-MRD / (4R)-2-METHYLPENTANE-2,4-DIOL


Mass: 118.174 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C6H14O2 / Comment: precipitant*YM
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 1327 / 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: 5.066891 Å3/Da / Density % sol: 75.724762 %
Crystal growTemperature: 278 K / Method: vapor diffusion, hanging drop
Details: Protein solution (2.5 uL): 11.6 mg/mL TvNiR, 0.05 M Tris-HCl, pH 8.0, reservoir solution (2.5 uL): 0.2 M ammonium acetate, 0.1 M citric acid trisodium salt, pH 5.6, 30% MPD, 0.1 M sodium ...Details: Protein solution (2.5 uL): 11.6 mg/mL TvNiR, 0.05 M Tris-HCl, pH 8.0, reservoir solution (2.5 uL): 0.2 M ammonium acetate, 0.1 M citric acid trisodium salt, pH 5.6, 30% MPD, 0.1 M sodium nitrite, VAPOR DIFFUSION, HANGING DROP, temperature 278.0K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: KURCHATOV SNC / Beamline: K4.4 / Wavelength: 0.978
DetectorType: MAR CCD 165 mm / Detector: CCD / Date: Jun 9, 2010
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.978 Å / Relative weight: 1
ReflectionResolution: 1.83→136.33 Å / Num. obs: 208153 / % possible obs: 99.8 % / Biso Wilson estimate: 26.2 Å2 / Rmerge(I) obs: 0.12 / Net I/σ(I): 20
Reflection shellResolution: 1.83→1.9 Å / Rmerge(I) obs: 0.671 / Mean I/σ(I) obs: 3.9 / % possible all: 99.9

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Processing

Software
NameVersionClassification
AUTOMARdata collection
REFMAC5.5.0072refinement
XDSdata reduction
XSCALEdata scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 2OT4

2ot4


Resolution: 1.83→100 Å / Cor.coef. Fo:Fc: 0.97 / Cor.coef. Fo:Fc free: 0.961 / SU B: 1.382 / SU ML: 0.042 / Cross valid method: THROUGHOUT / ESU R: 0.068 / ESU R Free: 0.069 / Stereochemistry target values: MAXIMUM LIKELIHOOD
RfactorNum. reflection% reflectionSelection details
Rfree0.16196 10466 5 %RANDOM
Rwork0.14137 ---
obs0.14239 197647 99.85 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: BABINET MODEL WITH MASK
Displacement parametersBiso mean: 21.013 Å2
Refine analyzeLuzzati coordinate error obs: 0.153 Å
Refinement stepCycle: LAST / Resolution: 1.83→100 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms8239 0 712 1327 10278
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.020.0219449
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg1.72.14312930
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.29451038
X-RAY DIFFRACTIONr_dihedral_angle_2_deg36.99923.806465
X-RAY DIFFRACTIONr_dihedral_angle_3_deg12.468151386
X-RAY DIFFRACTIONr_dihedral_angle_4_deg18.9451565
X-RAY DIFFRACTIONr_chiral_restr0.110.21213
X-RAY DIFFRACTIONr_gen_planes_refined0.0160.0217445
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_it0.8741.55197
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it1.49828346
X-RAY DIFFRACTIONr_scbond_it2.32534252
X-RAY DIFFRACTIONr_scangle_it3.5444.54584
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 1.83→1.878 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.279 757 -
Rwork0.236 14511 -
obs--99.89 %

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