Molecular structure of 20S and 26S proteasomes.

  title={Molecular structure of 20S and 26S proteasomes.},
  author={Norio Tanahashi and Chizuko Tsurumi and Tomohiro Tamura and Kan Tanaka},
  journal={Enzyme & protein},
  volume={47 4-6},
Eukaryotic proteasomes are unusually large protein complexes with characteristic sets of subunits and have been classified into two isoforms with apparent sedimentation coefficients of 20S and 26S, respectively. The 20S proteasome (previously named the multicatalytic proteinase complex) is a cylindrical particle with a molecular weight (MW) of approximately 750 kD. It is a dimeric assembly of two symmetrical discs, each consisting of 7 alpha-type subunits and 7 beta-type subunits, having the… CONTINUE READING
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