X-ray diffraction
1.62Å resolution

Crystal Structure of ST0689, an archaeal HEPN homologue

Entry authors: Arakawa T, Akutsu J, Yohda M

Function and Biology Details

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

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
HEPN domain-containing protein Chain: A
Molecule details ›
Chain: A
Length: 122 amino acids
Theoretical weight: 14.18 KDa
Source organism: Sulfurisphaera tokodaii str. 7
Expression system: Escherichia coli
  • Canonical: Q974G3 (Residues: 1-122; Coverage: 100%)
Gene names: ST0689, STK_06890
Sequence domains: HEPN domain
Structure domains: Nucleotidyltransferases domain 2

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SPRING-8 BEAMLINE BL38B1
Spacegroup: P3121
Unit cell:
a: 62.553Å b: 62.553Å c: 64.01Å
α: 90° β: 90° γ: 120°
R R work R free
0.187 0.187 0.222
Expression system: Escherichia coli