X-ray diffraction
2.6Å resolution

Structure of human Dicer Platform-PAZ-Connector Helix cassette in complex with 13-mer siRNA having 5'-A and UU-3' ends (2.6 Angstrom resolution)


Function and Biology Details

Reaction catalysed:
Endonucleolytic cleavage to 5'-phosphomonoester.
Biochemical function:
  • not assigned
Biological process:
  • not assigned
Cellular component:
  • not assigned

Structure analysis Details

Assemblies composition:
hetero trimer (preferred)
hetero tetramer
Entry contents:
1 distinct polypeptide molecule
1 distinct RNA molecule
Macromolecules (2 distinct):
Endoribonuclease Dicer Chain: A
Molecule details ›
Chain: A
Length: 302 amino acids
Theoretical weight: 34.93 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
  • Canonical: Q9UPY3 (Residues: 765-1065; Coverage: 16%)
Gene names: DICER, DICER1, HERNA, KIAA0928
Sequence domains: PAZ domain
Structure domains: paz domain
5'-R(*AP*GP*CP*GP*AP*AP*UP*UP*CP*GP*CP*UP*U)-3' Chain: B
Molecule details ›
Chain: B
Length: 13 nucleotides
Theoretical weight: 4.12 KDa
Source organism: Homo sapiens
Expression system: Not provided

Ligands and Environments

1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 24-ID-C
Spacegroup: I222
Unit cell:
a: 85.897Å b: 97.24Å c: 106.766Å
α: 90° β: 90° γ: 90°
R R work R free
0.189 0.186 0.239
Expression systems:
  • Escherichia coli BL21(DE3)
  • Not provided