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Taurine ABC transporter substrate binding protein TauA from E. coli in complex with 2-(N-Morpholino)ethanesulfonic acid (MES)

X-ray diffraction
1.55Å resolution
PDB entry 6st1 coloured by chain, front view.
PDB entry 6st1 coloured by chain, side view.
PDB entry 6st1 coloured by chain, top view.
Source organism: Escherichia coli K-12
Assembly composition:
monomeric (preferred)
Entry contents: 1 distinct polypeptide molecule

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Assemblies

Assembly 1
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Assembly Name: Taurine-binding periplasmic protein
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Multimeric state: monomeric
Accessible surface area: 12684.41 Å2
Buried surface area: 1423.45 Å2
Dissociation area: 213.89 Å2
Dissociation energy (ΔGdiss): -7.39 kcal/mol
Dissociation entropy (TΔSdiss): 2.8 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-175251
Assembly 2 (preferred)
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Assembly Name: Taurine-binding periplasmic protein
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Multimeric state: monomeric
Accessible surface area: 12010.36 Å2
Buried surface area: 1759.25 Å2
Dissociation area: 214.65 Å2
Dissociation energy (ΔGdiss): -7.65 kcal/mol
Dissociation entropy (TΔSdiss): 2.8 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-175251

Macromolecules

Taurine-binding periplasmic protein
Chains: A, B
Length: 298 amino acids
Theoretical weight: 32.01 KDa
Source organism: Escherichia coli K-12
Expression system: Escherichia coli
UniProt:
  • Canonical: Q47537 (Residues: 22-319; Coverage: 100%)
Gene names: JW0357, b0365, ssiA, tauA, yaiR
Pfam: Substrate binding domain of ABC-type glycine betaine transport system
InterPro:
Taurine-binding periplasmic protein in PDB entry 6st1, assembly 2, front view.
Taurine-binding periplasmic protein in PDB entry 6st1, assembly 2, side view.
Taurine-binding periplasmic protein in PDB entry 6st1, assembly 2, top view.
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