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Crystal structure of PptT-ACP from Mycobacterium tuberculosis

X-ray diffraction
2.5Å resolution
PDB entry 8qzi coloured by chain, front view.
PDB entry 8qzi coloured by chain, side view.
PDB entry 8qzi coloured by chain, top view.
Source organisms:
Assemblies composition:
monomeric
hetero dimer (preferred)
Entry contents: 2 distinct polypeptide molecules

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Assemblies

Assembly 1
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Assembly Name: 4'-phosphopantetheinyl transferase PptT
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Multimeric state: monomeric
Accessible surface area: 10435.71 Å2
Buried surface area: 1078.13 Å2
Dissociation area: 93.07 Å2
Dissociation energy (ΔGdiss): 6.66 kcal/mol
Dissociation entropy (TΔSdiss): -0.13 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-128483
Assembly 2
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Assembly Name: 4'-phosphopantetheinyl transferase PptT and Phenolphthiocerol/phthiocerol polyketide synthase subunit C
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Multimeric state: hetero dimer
Accessible surface area: 14661.7 Å2
Buried surface area: 2598.88 Å2
Dissociation area: 778.74 Å2
Dissociation energy (ΔGdiss): 0.45 kcal/mol
Dissociation entropy (TΔSdiss): 11.15 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-271651
Assembly 3 (preferred)
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Assembly Name: 4'-phosphopantetheinyl transferase PptT and Phenolphthiocerol/phthiocerol polyketide synthase subunit C
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Multimeric state: hetero dimer
Accessible surface area: 14148.14 Å2
Buried surface area: 3479.0 Å2
Dissociation area: 860.83 Å2
Dissociation energy (ΔGdiss): 0.24 kcal/mol
Dissociation entropy (TΔSdiss): 11.13 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-271651
Assembly 4
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Assembly Name: 4'-phosphopantetheinyl transferase PptT
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Multimeric state: monomeric
Accessible surface area: 10572.2 Å2
Buried surface area: 1134.17 Å2
Dissociation area: 94.34 Å2
Dissociation energy (ΔGdiss): 6.81 kcal/mol
Dissociation entropy (TΔSdiss): -0.13 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-128483

Macromolecules

4'-phosphopantetheinyl transferase PptT
Chains: A, B, C, D
Length: 247 amino acids
Theoretical weight: 26.91 KDa
Source organism: Mycobacterium tuberculosis
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: O33336 (Residues: 1-227; Coverage: 100%)
Gene names: Rv2794c, pptT
Pfam:
4'-phosphopantetheinyl transferase PptT in PDB entry 8qzi, assembly 3, front view.
4'-phosphopantetheinyl transferase PptT in PDB entry 8qzi, assembly 3, side view.
4'-phosphopantetheinyl transferase PptT in PDB entry 8qzi, assembly 3, top view.
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Phenolphthiocerol/phthiocerol polyketide synthase subunit C
Chains: E, F
Length: 172 amino acids
Theoretical weight: 18.57 KDa
Source organism: Mycobacterium tuberculosis H37Rv
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P96202 (Residues: 2042-2188; Coverage: 7%)
Gene names: Rv2933, ppsC
Pfam: Phosphopantetheine attachment site
Phenolphthiocerol/phthiocerol polyketide synthase subunit C in PDB entry 8qzi, assembly 3, front view.
Phenolphthiocerol/phthiocerol polyketide synthase subunit C in PDB entry 8qzi, assembly 3, side view.
Phenolphthiocerol/phthiocerol polyketide synthase subunit C in PDB entry 8qzi, assembly 3, top view.
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