1mjo

X-ray diffraction
2.1Å resolution

METHIONINE HOLOREPRESSOR MUTANT (Q44K) PLUS COREPRESSOR (S-ADENOSYL METHIONINE) COMPLEXED TO THE MINIMAL MET CONSENSUS OPERATOR WITH THE CENTRAL TA STEP MUTATED TO AT

Released:
Source organism: Escherichia coli
Primary publication:
Direct and indirect readout in mutant Met repressor-operator complexes.
Structure 8 905-14 (2000)
PMID: 10986458

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero hexamer (preferred)
Entry contents:
1 distinct polypeptide molecule
1 distinct DNA molecule
Macromolecules (2 distinct):
Met repressor Chains: A, B, C, D
Molecule details ›
Chains: A, B, C, D
Length: 104 amino acids
Theoretical weight: 12.03 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli
UniProt:
  • Canonical: P0A8U6 (Residues: 2-105; Coverage: 99%)
Gene names: JW3909, b3938, metJ
Sequence domains: Met Apo-repressor, MetJ
Structure domains: MET Apo-Repressor, subunit A
CONSENSUS DNA OPERATOR DUPLEX WITH THE CENTRAL TA STEP MUTATED TO AT Chains: F, G
Molecule details ›
Chains: F, G
Length: 19 nucleotides
Theoretical weight: 5.82 KDa
Source organism: Escherichia coli
Expression system: Not provided

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SRS BEAMLINE PX9.5
Spacegroup: P3221
Unit cell:
a: 117.505Å b: 117.505Å c: 90.208Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.189 0.189 0.241
Expression systems:
  • Escherichia coli
  • Not provided