Palmitoylation of the Influenza A Virus M2 Protein

Virology. 1990 Nov;179(1):51-6. doi: 10.1016/0042-6822(90)90272-s.


The M2 proteins of a variety of influenza A viruses of different subtypes were shown to possess associated palmitate. Susceptibility to removal by reduction or treatment with hydroxylamine is consistent with attachment via a thioester linkage to cysteine. The absence of the acyl group from the M2 proteins of several equine viruses of the H3N8 subtype correlates with the replacement of cysteine 50 with phenylalanine and points to this as the site of palmitate attachment.

Publication types

  • Comparative Study

MeSH terms

  • Amino Acid Sequence
  • Animals
  • Chick Embryo
  • Influenza A virus / metabolism*
  • Molecular Sequence Data
  • Molecular Weight
  • Palmitic Acid
  • Palmitic Acids / metabolism*
  • Sequence Homology, Nucleic Acid
  • Viral Matrix Proteins / isolation & purification
  • Viral Matrix Proteins / metabolism*


  • M-protein, influenza virus
  • M2 protein, Influenza A virus
  • Palmitic Acids
  • Viral Matrix Proteins
  • Palmitic Acid