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- PDB-1nip: CRYSTALLOGRAPHIC STRUCTURE OF THE NITROGENASE IRON PROTEIN FROM A... -

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Basic information

Entry
Database: PDB / ID: 1nip
TitleCRYSTALLOGRAPHIC STRUCTURE OF THE NITROGENASE IRON PROTEIN FROM AZOTOBACTER VINELANDII
ComponentsNITROGENASE IRON PROTEIN
KeywordsIRON PROTEIN
Function / homology
Function and homology information


nitrogenase / nitrogenase activity / nitrogen fixation / 4 iron, 4 sulfur cluster binding / ATP binding / metal ion binding
Similarity search - Function
Nitrogenase iron protein NifH / NifH/frxC family / NifH/chlL conserved site / 4Fe-4S iron sulfur cluster binding proteins, NifH/frxC family / NifH/frxC family signature 2. / NifH/frxC family signature 1. / NIFH_FRXC family profile. / P-loop containing nucleotide triphosphate hydrolases / Rossmann fold / P-loop containing nucleoside triphosphate hydrolase ...Nitrogenase iron protein NifH / NifH/frxC family / NifH/chlL conserved site / 4Fe-4S iron sulfur cluster binding proteins, NifH/frxC family / NifH/frxC family signature 2. / NifH/frxC family signature 1. / NIFH_FRXC family profile. / P-loop containing nucleotide triphosphate hydrolases / Rossmann fold / P-loop containing nucleoside triphosphate hydrolase / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
ADENOSINE-5'-DIPHOSPHATE / IRON/SULFUR CLUSTER / Nitrogenase iron protein 1
Similarity search - Component
Biological speciesAzotobacter vinelandii (bacteria)
MethodX-RAY DIFFRACTION / Resolution: 2.9 Å
AuthorsKomiya, H. / Georgiadis, M.M. / Chakrabarti, P. / Woo, D. / Kornuc, J.J. / Rees, D.C.
Citation
Journal: Science / Year: 1992
Title: Crystallographic structure of the nitrogenase iron protein from Azotobacter vinelandii.
Authors: Georgiadis, M.M. / Komiya, H. / Chakrabarti, P. / Woo, D. / Kornuc, J.J. / Rees, D.C.
#1: Journal: Nitrogen Fixation: Achievements and Objectives / Year: 1990
Title: Crystal Structure of the Nitrogenase Iron Protein from Azotobacter Vinelandii
Authors: Georgiadis, M.M. / Chakrabarti, P. / Rees, D.C.
History
DepositionSep 29, 1992Processing site: BNL
Revision 1.0Oct 31, 1993Provider: repository / Type: Initial release
Revision 1.1Mar 3, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Feb 14, 2024Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Other
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_database_status / 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_database_status.process_site / _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.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_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

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Assembly

Deposited unit
A: NITROGENASE IRON PROTEIN
B: NITROGENASE IRON PROTEIN
hetero molecules


Theoretical massNumber of molelcules
Total (without water)63,6626
Polymers62,8342
Non-polymers8274
Water30617
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area4390 Å2
ΔGint-64 kcal/mol
Surface area22070 Å2
MethodPISA
Unit cell
Length a, b, c (Å)56.800, 92.900, 63.600
Angle α, β, γ (deg.)90.00, 100.00, 90.00
Int Tables number4
Space group name H-MP1211

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Components

#1: Protein NITROGENASE IRON PROTEIN


Mass: 31417.045 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Azotobacter vinelandii (bacteria) / References: UniProt: P00459
#2: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Mg
#3: Chemical ChemComp-SF4 / IRON/SULFUR CLUSTER


Mass: 351.640 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Fe4S4
#4: Chemical ChemComp-ADP / ADENOSINE-5'-DIPHOSPHATE


Mass: 427.201 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H15N5O10P2 / Comment: ADP, energy-carrying molecule*YM
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 17 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION

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Sample preparation

CrystalDensity Matthews: 2.63 Å3/Da / Density % sol: 53.22 %
Crystal grow
*PLUS
pH: 8.3 / Method: batch method / Details: the ratio of 1 and 2 is 2:1
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
130 %PEG400011
20.20 M11Na2MoO4
3100 mMTris-HCl11
450 mMTris-HCl12
52 mM12Na2S2O4
60.45 M12NaCl

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Data collection

RadiationScattering type: x-ray
Radiation wavelengthRelative weight: 1

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Processing

SoftwareName: TNT / Classification: refinement
RefinementResolution: 2.9→8 Å / Rfactor obs: 0.183 / σ(F): 0
Details: THERE ARE NO RELIABLE POSITIONS FROM A 284 TO A 289 AND FROM B 288 TO B 289. THE ADP COORDINATES ARE NOT AS RELIABLE AS OTHER ATOMS DUE TO THE LOW OCCUPANCY. ITS TEMPERATURE FACTOR AND ...Details: THERE ARE NO RELIABLE POSITIONS FROM A 284 TO A 289 AND FROM B 288 TO B 289. THE ADP COORDINATES ARE NOT AS RELIABLE AS OTHER ATOMS DUE TO THE LOW OCCUPANCY. ITS TEMPERATURE FACTOR AND OCCUPANCY WERE FIXED TO 29.0 AND 0.5, RESPECTIVELY, DURING REFINEMENT.
Refinement stepCycle: LAST / Resolution: 2.9→8 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms4110 0 45 9 4164
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONt_bond_d0.017
X-RAY DIFFRACTIONt_angle_deg2.231
X-RAY DIFFRACTIONt_dihedral_angle_d
X-RAY DIFFRACTIONt_incorr_chiral_ct
X-RAY DIFFRACTIONt_pseud_angle
X-RAY DIFFRACTIONt_trig_c_planes
X-RAY DIFFRACTIONt_gen_planes
X-RAY DIFFRACTIONt_it
X-RAY DIFFRACTIONt_nbd
Refine LS restraints
*PLUS
Refine-IDType
X-RAY DIFFRACTIONt_angle_d
X-RAY DIFFRACTIONt_angle_deg

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