› 1qka

X-ray diffraction
1.8Å resolution

OLIGO-PEPTIDE BINDING PROTEIN (OPPA) COMPLEXED WITH KRK

Released:
DOI: 10.2210/pdb1qka/pdb
PDB entry 1qka coloured by chain, front view.
PDB entry 1qka coloured by chain, side view.
PDB entry 1qka coloured by chain, top view.
Source organisms:
Primary publication:
Crystallographic and calorimetric analysis of peptide binding to OppA protein.
Sleigh SH, Seavers PR, Wilkinson AJ, Ladbury JE, Tame JR
J Mol Biol 291 393-415 (1999)
PMID: 10438628

Function and Biology Details

Biochemical function:
Biological process:
Cellular component:
Sequence domains:
Structure domain:

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-138924 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Periplasmic oligopeptide-binding protein OppA Chain: A
Molecule details ›
Chain: A
Length: 517 amino acids
Theoretical weight: 58.88 KDa
Source organism: Salmonella enterica subsp. enterica serovar Typhimurium
Expression system: Escherichia coli
UniProt:
  • Canonical: P06202 (Residues: 27-543; Coverage: 100%)
Gene names: STM1746, oppA
Sequence domains: Bacterial extracellular solute-binding proteins, family 5 Middle
Structure domains:
LYS-ARG-LYS Chain: B
Molecule details ›
Chain: B
Length: 3 amino acids
Theoretical weight: 434 Da
Source organism: synthetic construct
Expression system: Not provided

Ligands and Environments

1 bound ligand:
Ligand IUM 11 x IUM
No modified residues

Experiments and Validation Details

Entry percentile scores
Spacegroup: P212121
Unit cell:
a: 109.926Å b: 75.446Å c: 70.061Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.176 0.176 0.222
Expression systems:
  • Escherichia coli
  • Not provided

Quick links

Citations

13 review citations

Water mediation in protein folding and molecular recognition.
Levy et al. (2006)
12 more

7 mentions without citation

Assessment of programs for ligand binding affinity prediction.
Kim et al. (2008)
6 more