X-ray diffraction
1.77Å resolution

Crystal structure of the Ribonuclease MC1 from bitter gourd seeds complexed with 3'-UMP.


Function and Biology Details

Reaction catalysed:
(1a) RNA = an (RNA fragment)-3'-nucleoside-2',3'-cyclophosphate + a 5'-hydroxy-ribonucleotide-3'-(RNA fragment)
Biochemical function:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Ribonuclease MC Chain: A
Molecule details ›
Chain: A
Length: 190 amino acids
Theoretical weight: 21.23 KDa
Source organism: Momordica charantia
  • Canonical: P23540 (Residues: 1-191; Coverage: 100%)
Sequence domains: Ribonuclease T2 family
Structure domains: Ribonuclease T2-like

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SPRING-8 BEAMLINE BL44B2
Spacegroup: P212121
Unit cell:
a: 38.8Å b: 67.63Å c: 75.54Å
α: 90° β: 90° γ: 90°
R R work R free
0.181 0.181 0.214