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- PDB-5vq4: Nitrogenase Av1 at pH 5 -

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Basic information

Entry
Database: PDB / ID: 5vq4
TitleNitrogenase Av1 at pH 5
Components(Nitrogenase molybdenum-iron protein ...) x 2
KeywordsOXIDOREDUCTASE / Nitrogenase / Molybdenum-iron protein / MoFe protein / Av1
Function / homology
Function and homology information


molybdenum-iron nitrogenase complex / nitrogenase / carbonyl sulfide nitrogenase activity / nitrogenase activity / nitrogen fixation / iron-sulfur cluster binding / ATP binding / metal ion binding
Similarity search - Function
Nitrogenase Molybdenum-iron Protein, subunit B, domain 4 / Nitrogenase Molybdenum-iron Protein, subunit B; domain 4 / Nitrogenase molybdenum-iron protein beta chain, N-terminal / Domain of unknown function (DUF3364) / Nitrogenase molybdenum-iron protein alpha chain / Nitrogenase molybdenum-iron protein beta chain / Nitrogenase component 1, alpha chain / Nitrogenase component 1, conserved site / Nitrogenases component 1 alpha and beta subunits signature 2. / Nitrogenases component 1 alpha and beta subunits signature 1. ...Nitrogenase Molybdenum-iron Protein, subunit B, domain 4 / Nitrogenase Molybdenum-iron Protein, subunit B; domain 4 / Nitrogenase molybdenum-iron protein beta chain, N-terminal / Domain of unknown function (DUF3364) / Nitrogenase molybdenum-iron protein alpha chain / Nitrogenase molybdenum-iron protein beta chain / Nitrogenase component 1, alpha chain / Nitrogenase component 1, conserved site / Nitrogenases component 1 alpha and beta subunits signature 2. / Nitrogenases component 1 alpha and beta subunits signature 1. / Nitrogenase/oxidoreductase, component 1 / Nitrogenase component 1 type Oxidoreductase / Nitrogenase molybdenum iron protein domain / Up-down Bundle / Rossmann fold / 3-Layer(aba) Sandwich / Mainly Alpha / Alpha Beta
Similarity search - Domain/homology
FE(8)-S(7) CLUSTER / : / 3-HYDROXY-3-CARBOXY-ADIPIC ACID / Chem-ICS / Nitrogenase molybdenum-iron protein alpha chain / Nitrogenase molybdenum-iron protein beta chain
Similarity search - Component
Biological speciesAzotobacter vinelandii (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.3 Å
AuthorsMorrison, C.N. / Spatzal, T. / Rees, D.C.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM45162 United States
CitationJournal: J. Am. Chem. Soc. / Year: 2017
Title: Reversible Protonated Resting State of the Nitrogenase Active Site.
Authors: Morrison, C.N. / Spatzal, T. / Rees, D.C.
History
DepositionMay 7, 2017Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 26, 2017Provider: repository / Type: Initial release
Revision 1.1Aug 23, 2017Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last
Revision 1.2Nov 22, 2017Group: Refinement description / Category: software / Item: _software.classification
Revision 1.3Jan 1, 2020Group: Author supporting evidence / Category: pdbx_audit_support / Item: _pdbx_audit_support.funding_organization
Revision 1.4Oct 4, 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
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_alt_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_alt_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_alt_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.pdbx_ptnr1_label_alt_id / _struct_conn.pdbx_ptnr2_label_alt_id / _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

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Nitrogenase molybdenum-iron protein alpha chain
B: Nitrogenase molybdenum-iron protein beta chain
C: Nitrogenase molybdenum-iron protein alpha chain
D: Nitrogenase molybdenum-iron protein beta chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)233,23912
Polymers229,7984
Non-polymers3,4418
Water6,521362
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: native gel electrophoresis
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area31800 Å2
ΔGint-262 kcal/mol
Surface area59090 Å2
MethodPISA
Unit cell
Length a, b, c (Å)81.315, 128.859, 108.359
Angle α, β, γ (deg.)90.00, 110.89, 90.00
Int Tables number4
Space group name H-MP1211

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Components

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Nitrogenase molybdenum-iron protein ... , 2 types, 4 molecules ACBD

#1: Protein Nitrogenase molybdenum-iron protein alpha chain / Dinitrogenase / Nitrogenase component I


Mass: 55363.043 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Azotobacter vinelandii (bacteria) / Gene: nifD / Production host: Escherichia coli (E. coli) / References: UniProt: P07328, nitrogenase
#2: Protein Nitrogenase molybdenum-iron protein beta chain / Dinitrogenase / Nitrogenase component I


Mass: 59535.879 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Azotobacter vinelandii (bacteria) / Gene: nifK / Production host: Escherichia coli (E. coli) / References: UniProt: P07329, nitrogenase

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Non-polymers , 5 types, 370 molecules

#3: Chemical ChemComp-HCA / 3-HYDROXY-3-CARBOXY-ADIPIC ACID


Mass: 206.150 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C7H10O7
#4: Chemical ChemComp-ICS / iron-sulfur-molybdenum cluster with interstitial carbon


Mass: 787.451 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: CFe7MoS9
#5: Chemical ChemComp-CLF / FE(8)-S(7) CLUSTER


Mass: 671.215 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Fe8S7
#6: Chemical ChemComp-FE / FE (III) ION / Iron


Mass: 55.845 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Fe
#7: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 362 / 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: 2.31 Å3/Da / Density % sol: 46.71 %
Crystal growTemperature: 293 K / Method: vapor diffusion, sitting drop
Details: PEG 4000, sodium chloride, imidazole/malate, sodium dithionite

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: SSRL / Beamline: BL12-2 / Wavelength: 0.9795 Å
DetectorType: DECTRIS PILATUS 6M / Detector: PIXEL / Date: Mar 10, 2016
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.9795 Å / Relative weight: 1
ReflectionResolution: 2.3→39.54 Å / Num. obs: 91309 / % possible obs: 98.8 % / Redundancy: 6.7 % / Rmerge(I) obs: 0.174 / Net I/σ(I): 9.2
Reflection shellResolution: 2.3→2.34 Å / Redundancy: 7.1 % / Rmerge(I) obs: 0.72 / Mean I/σ(I) obs: 3.1 / Num. unique obs: 4527 / % possible all: 99.4

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Processing

Software
NameVersionClassification
REFMAC5.8.0151refinement
XDSdata scaling
Aimlessdata scaling
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 3U7Q
Resolution: 2.3→39.54 Å / Cor.coef. Fo:Fc: 0.949 / Cor.coef. Fo:Fc free: 0.914 / SU B: 7.06 / SU ML: 0.167 / Cross valid method: THROUGHOUT / ESU R: 0.346 / ESU R Free: 0.227 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.22242 4320 4.7 %RANDOM
Rwork0.1677 ---
obs0.17031 86949 98.66 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso mean: 24.883 Å2
Baniso -1Baniso -2Baniso -3
1-1.21 Å2-0 Å20.14 Å2
2--0.81 Å2-0 Å2
3----1.64 Å2
Refinement stepCycle: 1 / Resolution: 2.3→39.54 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms15928 0 96 362 16386
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0110.01916526
X-RAY DIFFRACTIONr_bond_other_d0.0010.0215414
X-RAY DIFFRACTIONr_angle_refined_deg1.391.98522807
X-RAY DIFFRACTIONr_angle_other_deg0.758335610
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.08752004
X-RAY DIFFRACTIONr_dihedral_angle_2_deg36.31824.144765
X-RAY DIFFRACTIONr_dihedral_angle_3_deg14.628152882
X-RAY DIFFRACTIONr_dihedral_angle_4_deg19.4941592
X-RAY DIFFRACTIONr_chiral_restr0.0830.22367
X-RAY DIFFRACTIONr_gen_planes_refined0.0060.02118452
X-RAY DIFFRACTIONr_gen_planes_other0.0010.023768
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_it2.9332.3038007
X-RAY DIFFRACTIONr_mcbond_other2.9322.3038006
X-RAY DIFFRACTIONr_mcangle_it4.1353.44410008
X-RAY DIFFRACTIONr_mcangle_other4.1353.44310009
X-RAY DIFFRACTIONr_scbond_it3.7112.598519
X-RAY DIFFRACTIONr_scbond_other3.7122.5938488
X-RAY DIFFRACTIONr_scangle_it
X-RAY DIFFRACTIONr_scangle_other5.4283.74312286
X-RAY DIFFRACTIONr_long_range_B_refined6.98926.88718915
X-RAY DIFFRACTIONr_long_range_B_other6.87526.88318816
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 2.3→2.36 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.284 330 -
Rwork0.212 6446 -
obs--99.43 %

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