PDBe 2eg2

X-ray diffraction
1.72Å resolution

The crystal structure of PII protein

Source organism: Aquifex aeolicus
Entry authors: Sakai H, Shinkai A, Kitamura Y, Kuramitsu S, Yokoyama S, RIKEN Structural Genomics/Proteomics Initiative (RSGI)

Function and Biology Details

Structure analysis Details

Assemblies composition:
homo trimer (preferred)
homo 12-mer
Entry contents:
1 distinct polypeptide molecule
Nitrogen regulatory protein P-II Chain: A
Molecule details ›
Chain: A
Length: 112 amino acids
Theoretical weight: 12.52 KDa
Source organism: Aquifex aeolicus
Expression system: Escherichia coli
  • Canonical: O66513 (Residues: 1-112; Coverage: 100%)
Gene names: aq_109, glnB
Sequence domains: Nitrogen regulatory protein P-II
Structure domains: Alpha-Beta Plaits

Ligands and Environments

2 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SPRING-8 BEAMLINE BL45XU
Spacegroup: I23
Unit cell:
a: 81.961Å b: 81.961Å c: 81.961Å
α: 90° β: 90° γ: 90°
R R work R free
0.194 0.194 0.228
Expression system: Escherichia coli