1UBI

Synthetic, structural and biological studies of the ubiquitin system: the total chemical synthesis of ubiquitin.

(1994) Biochem J 299: 151-158

• PubMed: 8166633 Search on PubMedSearch on PubMed Central
• DOI: https://doi.org/10.1042/bj2990151
• Primary Citation of Related Structures:  
  1UBI


• PubMed Abstract: 
  

  The small protein ubiquitin (76 amino acids) has been synthesized under optimized conditions by Merrifield solid-phase methodology using the N alpha-Fmoc protecting group. The crude polypeptide mixture was purified to homogeneity by gel filtration, dialysis and a combination of cation- and anion-exchange chromatography to yield ubiquitin. Amino acid analysis, enzymic digestion and sequencing by automated Edman degradation were used to authenticate the primary structure. Isoelectric focusing and m.s. were used to demonstrate that the final product was greater than 98% pure with a final yield of 93 mg (4.3%) from a single synthesis on a 0.25 nmol scale.

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Organizational Affiliation: 

Edinburgh Center for Molecular Recognition, Department of Chemistry, University of Edinburgh, Scotland, U.K.