The amino acid sequence of eukaryotic translation initiation factor 1 and its similarity to yeast initiation factor SUI1

FEBS Lett. 1995 May 22;365(1):47-50. doi: 10.1016/0014-5793(95)00427-b.


Eukaryotic initiation factor eIF-1 was purified from rabbit reticulocytes. Amino acid sequence analysis revealed that the protein contained a blocked amino-terminus. After cleavage with the endoproteinase Asp-N, three peptides were sequenced. The obtained partial sequences were identical to sequences of SUI1ISO1, the human homologue of the yeast translation initiation factor SUI1. The SUI1 gene product was identified as a protein involved in the recognition of the protein synthesis initiation codon. A similar mode of action has been suggested for eIF-1.

MeSH terms

  • Amino Acid Sequence
  • Animals
  • Eukaryotic Initiation Factor-1 / chemistry*
  • Eukaryotic Initiation Factor-1 / isolation & purification
  • Eukaryotic Initiation Factor-1 / metabolism
  • Fungal Proteins / metabolism
  • Molecular Sequence Data
  • Peptide Fragments / chemistry*
  • Peptide Initiation Factors*
  • RNA, Transfer, Met / metabolism
  • Rabbits
  • Saccharomyces cerevisiae Proteins*
  • Sequence Analysis


  • Eukaryotic Initiation Factor-1
  • Fungal Proteins
  • Peptide Fragments
  • Peptide Initiation Factors
  • RNA, Transfer, Met
  • SUI1 protein, S cerevisiae
  • Saccharomyces cerevisiae Proteins