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Structural dynamics of the MecA-ClpC complex revealed by cryo-EM

Electron Microscopy
9.4Å resolution
PDB entry 3j3r coloured by chain, front view.
PDB entry 3j3r coloured by chain, side view.
PDB entry 3j3r coloured by chain, top view.
Source organism: Bacillus subtilis subsp. subtilis str. 168
Assembly composition:
hetero dodecamer (preferred)
Entry contents: 2 distinct polypeptide molecules

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Negative regulator of genetic competence ClpC/MecB and Adapter protein MecA 1
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Multimeric state: hetero dodecamer
Accessible surface area: 168713.28 Å2
Buried surface area: 75870.97 Å2
Dissociation area: 6,496.54 Å2
Dissociation energy (ΔGdiss): 42.82 kcal/mol
Dissociation entropy (TΔSdiss): 38 kcal/mol
Symmetry number: 4
PDBe Complex ID: PDB-CPX-153436

Macromolecules

Adapter protein MecA 1
Chains: 1, 2, 3, 4, 5, 6
Length: 218 amino acids
Theoretical weight: 25.79 KDa
Source organism: Bacillus subtilis subsp. subtilis str. 168
Expression system: Escherichia coli
UniProt:
  • Canonical: P37958 (Residues: 1-218; Coverage: 100%)
Gene names: BSU11520, mecA
Pfam: Negative regulator of genetic competence (MecA)
InterPro:
Adapter protein MecA 1 in PDB entry 3j3r, assembly 1, front view.
Adapter protein MecA 1 in PDB entry 3j3r, assembly 1, side view.
Adapter protein MecA 1 in PDB entry 3j3r, assembly 1, top view.
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Negative regulator of genetic competence ClpC/MecB
Chains: A, B, C, D, E, F
Length: 810 amino acids
Theoretical weight: 90.14 KDa
Source organism: Bacillus subtilis subsp. subtilis str. 168
Expression system: Escherichia coli
UniProt:
  • Canonical: P37571 (Residues: 1-810; Coverage: 100%)
Gene names: BSU00860, clpC, mecB
Pfam:
InterPro:
Negative regulator of genetic competence ClpC/MecB in PDB entry 3j3r, assembly 1, front view.
Negative regulator of genetic competence ClpC/MecB in PDB entry 3j3r, assembly 1, side view.
Negative regulator of genetic competence ClpC/MecB in PDB entry 3j3r, assembly 1, top view.
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