› 3nqo

X-ray diffraction
2.2Å resolution

Crystal structure of a MarR family transcriptional regulator (CD1569) from Clostridium difficile 630 at 2.20 A resolution

Released:
DOI: 10.2210/pdb3nqo/pdb
PDB entry 3nqo coloured by chain, front view.
PDB entry 3nqo coloured by chain, side view.
PDB entry 3nqo coloured by chain, top view.
Source organism: Clostridioides difficile 630
Entry author: Joint Center for Structural Genomics (JCSG)

Function and Biology Details

Biochemical function:
Biological process:
Cellular component:
  • not assigned
Sequence domains:

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-172697 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
HTH marR-type domain-containing protein Chains: A, B
Molecule details ›
Chains: A, B
Length: 189 amino acids
Theoretical weight: 22.46 KDa
Source organism: Clostridioides difficile 630
Expression system: Escherichia coli
UniProt:
  • Canonical: Q186C2 (Residues: 1-188; Coverage: 100%)
Gene name: CD630_15690
Sequence domains: MarR family
Structure domains: Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain

Ligands and Environments

3 bound ligands:
Ligand GOL 2 x GOL
Ligand PG4 5 x PG4
Ligand NA 1 x NA
1 modified residue:
Ligand MSE 16 x MSE

Experiments and Validation Details

Entry percentile scores
X-ray source: SSRL BEAMLINE BL9-2
Spacegroup: P212121
Unit cell:
a: 69.739Å b: 72.672Å c: 76.072Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.199 0.197 0.237
Expression system: Escherichia coli

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