PDBe 1qmh

X-ray diffraction
2.1Å resolution

Crystal structure of RNA 3'-terminal phosphate cyclase, an ubiquitous enzyme with unusual topology


Function and Biology Details

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Entry contents:
1 distinct polypeptide molecule
RNA 3'-terminal phosphate cyclase Chains: A, B
Molecule details ›
Chains: A, B
Length: 347 amino acids
Theoretical weight: 37.01 KDa
Source organism: Escherichia coli K-12
Expression system: Escherichia coli BL21(DE3)
  • Canonical: P46849 (Residues: 2-338; Coverage: 100%)
Gene names: JW5688, b4475, rtcA, yhgJ, yhgK
Sequence domains:
Structure domains:

Ligands and Environments

2 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: NSLS BEAMLINE X9B
Spacegroup: P21212
Unit cell:
a: 125.8Å b: 133.5Å c: 51Å
α: 90° β: 90° γ: 90°
R R work R free
0.207 0.204 0.276
Expression system: Escherichia coli BL21(DE3)