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- PDB-1dp9: CRYSTAL STRUCTURE OF IMIDAZOLE-BOUND FIXL HEME DOMAIN -

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Basic information

Entry
Database: PDB / ID: 1dp9
TitleCRYSTAL STRUCTURE OF IMIDAZOLE-BOUND FIXL HEME DOMAIN
ComponentsFIXL PROTEIN
KeywordsOXYGEN STORAGE/TRANSPORT / HEME / FIXL HEME DOMAIN LIGANDED STRUCTURE / PAS DOMAIN FAMILY / TWO COMPONENT SYSTEM / HISTIDINE KINASE / OXYGEN STORAGE-TRANSPORT COMPLEX
Function / homology
Function and homology information


histidine phosphotransfer kinase activity / nitrogen fixation / phosphorelay sensor kinase activity / histidine kinase / phosphorelay signal transduction system / regulation of DNA-templated transcription / ATP binding / metal ion binding / plasma membrane
Similarity search - Function
: / PAS-associated, C-terminal / PAC domain profile. / His Kinase A (phospho-acceptor) domain / His Kinase A (phosphoacceptor) domain / Signal transduction histidine kinase, dimerisation/phosphoacceptor domain / PAC motif / Motif C-terminal to PAS motifs (likely to contribute to PAS structural domain) / PAS domain / Signal transduction histidine kinase-related protein, C-terminal ...: / PAS-associated, C-terminal / PAC domain profile. / His Kinase A (phospho-acceptor) domain / His Kinase A (phosphoacceptor) domain / Signal transduction histidine kinase, dimerisation/phosphoacceptor domain / PAC motif / Motif C-terminal to PAS motifs (likely to contribute to PAS structural domain) / PAS domain / Signal transduction histidine kinase-related protein, C-terminal / Signal transduction histidine kinase, dimerisation/phosphoacceptor domain superfamily / Histidine kinase domain / Histidine kinase domain profile. / Beta-Lactamase / PAS fold / PAS fold / PAS domain / PAS repeat profile. / Histidine kinase-, DNA gyrase B-, and HSP90-like ATPase / PAS domain / PAS domain superfamily / Histidine kinase-like ATPases / Histidine kinase/HSP90-like ATPase superfamily / 2-Layer Sandwich / Alpha Beta
Similarity search - Domain/homology
PROTOPORPHYRIN IX CONTAINING FE / IMIDAZOLE / Sensor protein FixL
Similarity search - Component
Biological speciesBradyrhizobium japonicum (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / Resolution: 2.6 Å
AuthorsGong, W. / Hao, B. / Chan, M.K.
Citation
Journal: Biochemistry / Year: 2000
Title: New mechanistic insights from structural studies of the oxygen-sensing domain of Bradyrhizobium japonicum FixL.
Authors: Gong, W. / Hao, B. / Chan, M.K.
#1: Journal: Proc.Natl.Acad.Sci.USA / Year: 1998
Title: Structure of a Biological Oxygen Sensor: a New Mechanism for Heme-driven Signal Transduction
Authors: Gong, W. / Hao, B. / Mansy, S.S. / Gonzalez, G. / Gilles-Gonzalez, M.A. / Chan, M.K.
History
DepositionDec 24, 1999Deposition site: RCSB / Processing site: RCSB
Revision 1.0Dec 24, 2000Provider: repository / Type: Initial release
Revision 1.1Apr 27, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Jan 31, 2018Group: Database references / Category: citation_author / Item: _citation_author.name
Revision 1.4Feb 7, 2024Group: Data collection / Database references / Derived calculations
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_struct_conn_angle / 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_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.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_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_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_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: FIXL PROTEIN
hetero molecules


Theoretical massNumber of molelcules
Total (without water)15,6053
Polymers14,9201
Non-polymers6862
Water99155
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)125.966, 125.966, 58.734
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number155
Space group name H-MH32

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Components

#1: Protein FIXL PROTEIN


Mass: 14919.858 Da / Num. of mol.: 1 / Fragment: HEME DOMAIN
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Bradyrhizobium japonicum (bacteria) / Plasmid: PRJ7349 / Production host: Escherichia coli (E. coli) / References: UniProt: P23222
#2: Chemical ChemComp-IMD / IMIDAZOLE


Mass: 69.085 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C3H5N2
#3: Chemical ChemComp-HEM / PROTOPORPHYRIN IX CONTAINING FE / HEME


Mass: 616.487 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C34H32FeN4O4
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 55 / 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 Å3/Da / Density % sol: 59.06 %
Crystal growTemperature: 277 K / Method: vapor diffusion, hanging drop / pH: 7.5
Details: Sodium Chloride, MPD, HEPES, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Crystal grow
*PLUS
Temperature: 4 ℃ / Method: vapor diffusion / Details: W, Gong, (1998) Proc.Natl.Acad.Sci.USA, 95, 15177.
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
14.5 M1reservoirNaCl
25 %(v/v)MPD1reservoir
30.1 MHEPES1reservoir

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: NSLS / Beamline: X4A / Wavelength: 1.283
DetectorDetector: CCD
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.283 Å / Relative weight: 1
ReflectionResolution: 2.6→20 Å / Num. all: 53578 / Num. obs: 5137 / % possible obs: 91.9 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Rmerge(I) obs: 0.058
Reflection shellResolution: 2.6→20 Å / Rmerge(I) obs: 0.26 / Num. unique all: 5137 / % possible all: 83.3
Reflection
*PLUS
Num. measured all: 53578
Reflection shell
*PLUS
% possible obs: 83.3 %

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Processing

Software
NameVersionClassification
X-PLORmodel building
X-PLOR3.851refinement
DENZOdata reduction
SCALEPACKdata scaling
X-PLORphasing
RefinementResolution: 2.6→20 Å / σ(F): 0 / σ(I): 0 / Stereochemistry target values: Engh & Huber / Details: Used weighted full matrix least squares procedure.
RfactorNum. reflection% reflectionSelection details
Rfree0.263 411 -RANDOM
Rwork0.195 ---
all0.195 53578 --
obs0.195 5137 83.3 %-
Refinement stepCycle: LAST / Resolution: 2.6→20 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms914 0 48 55 1017
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_angle_deg1.82
X-RAY DIFFRACTIONx_bond_d0.014

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