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Structure of the effector-binding domain of arabinose repressor AraR from Bacillus subtilis

X-ray diffraction
2.21Å resolution
PDB entry 3tb6 coloured by chain, front view.
PDB entry 3tb6 coloured by chain, side view.
PDB entry 3tb6 coloured by chain, top view.
Source organism: Bacillus subtilis
Assembly composition:
homo dimer (preferred)
Entry contents: 1 distinct polypeptide molecule

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Arabinose metabolism transcriptional repressor
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Multimeric state: homo dimer
Accessible surface area: 24491.56 Å2
Buried surface area: 2881.38 Å2
Dissociation area: 880.08 Å2
Dissociation energy (ΔGdiss): -3.78 kcal/mol
Dissociation entropy (TΔSdiss): 13.44 kcal/mol
Symmetry number: 2
PDBe Complex ID: PDB-CPX-161244

Macromolecules

Arabinose metabolism transcriptional repressor
Chains: A, B
Length: 298 amino acids
Theoretical weight: 33.39 KDa
Source organism: Bacillus subtilis
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P96711 (Residues: 71-362; Coverage: 81%)
Gene names: BSU33970, araC, araR, yvbS
Pfam: Periplasmic binding protein-like domain
InterPro:
CATH: Rossmann fold
Arabinose metabolism transcriptional repressor in PDB entry 3tb6, assembly 1, front view.
Arabinose metabolism transcriptional repressor in PDB entry 3tb6, assembly 1, side view.
Arabinose metabolism transcriptional repressor in PDB entry 3tb6, assembly 1, top view.
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