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A Proximal Arginine Residue in the Switching Mechanism of the FixL Oxygen Sensor

X-ray diffraction
2.3Å resolution
PDB entry 2cmn coloured by chain, front view.
PDB entry 2cmn coloured by chain, side view.
PDB entry 2cmn coloured by chain, top view.
Source organism: Bradyrhizobium japonicum
Assembly composition:
homo hexamer (preferred)
Entry contents: 1 distinct polypeptide molecule

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Sensor protein FixL
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Multimeric state: homo hexamer
Accessible surface area: 34499.29 Å2
Buried surface area: 15080.55 Å2
Dissociation area: 2,269.74 Å2
Dissociation energy (ΔGdiss): 2.77 kcal/mol
Dissociation entropy (TΔSdiss): 26.39 kcal/mol
Symmetry number: 6
PDBe Complex ID: PDB-CPX-149897

Macromolecules

Sensor protein FixL
Chain: A
Length: 130 amino acids
Theoretical weight: 14.7 KDa
Source organism: Bradyrhizobium japonicum
Expression system: Escherichia coli
UniProt:
  • Canonical: P23222 (Residues: 141-270; Coverage: 26%)
Gene names: bll2760, fixL
Pfam: PAS fold
InterPro:
CATH: PAS domain
Sensor protein FixL in PDB entry 2cmn, assembly 1, front view.
Sensor protein FixL in PDB entry 2cmn, assembly 1, side view.
Sensor protein FixL in PDB entry 2cmn, assembly 1, top view.
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