Structure analysis

The crystal structure of PtcA from S. mutans

X-ray diffraction
2.5Å resolution
Source organism: Streptococcus mutans
Assembly composition:
homo trimer (preferred)
Entry contents: 1 distinct polypeptide molecule

Assemblies

Assembly 1 (preferred)
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Multimeric state: homo trimer
Accessible surface area: 13400 Å2
Buried surface area: 6000 Å2
Dissociation area: 3,000 Å2
Dissociation energy (ΔGdiss): 29 kcal/mol
Dissociation entropy (TΔSdiss): 24 kcal/mol
Interface energy (ΔGint): -38 kcal/mol
Symmetry number: 3
Assembly 2
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Multimeric state: homo trimer

Binding statistics and energies are not available for this assembly
Assembly 3
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Multimeric state: homo trimer

Binding statistics and energies are not available for this assembly
Assembly 4
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Multimeric state: homo trimer

Binding statistics and energies are not available for this assembly

Macromolecules

Chains: A, B, C, D, E, F, G, H
Length: 120 amino acids
Theoretical weight: 13.48 KDa
Source organism: Streptococcus mutans
Expression system: Escherichia coli
UniProt:
  • Canonical: Q8DT03 (Residues: 1-103; Coverage: 100%)
Gene names: SMU_1598, ptcA
Pfam: PTS system, Lactose/Cellobiose specific IIA subunit
InterPro:
CATH: Phosphotransferase system, lactose/cellobiose-type IIA subunit

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