Electron Microscopy
1.77Å resolution

1.77 A cryo-EM structure of Streptavidin using first 40 frames (corresponding to about 40 e/A^2 total dose)

Source organism: Streptomyces avidinii
Entry authors: Hiraizumi M, Yamashita K, Nishizawa T, Kotecha A, Nureki O
Related structures: EMD-31084

Function and Biology Details

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

Structure analysis Details

Assemblies composition:
homo tetramer (preferred)
Entry contents:
1 distinct polypeptide molecule
Streptavidin Chain: A
Molecule details ›
Chain: A
Length: 183 amino acids
Theoretical weight: 18.85 KDa
Source organism: Streptomyces avidinii
  • Canonical: P22629 (Residues: 1-183; Coverage: 100%)
Sequence domains: Avidin family

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
Resolution: 1.77Å
Relevant EMDB volumes: EMD-31084