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Sarcotoxins are a group of antibacterial peptides present in the flesh fly belonging to the genus Sarcophaga. The proteins are present in the haemolymph of the fresh fly. The first protein, called sarcotoxin 1A, was discovered in 1983 from Sarcophaga peregrina by Masayuki Okada and Shunji Natori at the University of Tokyo, Japan.[1][2]

Sarcotoxins are sometimes/often classified as cecropins since they are found in insects.


  1. ^ Iwai, H.; Nakajima, Y.; Natori, S.; Arata, Y.; Shimada, I. (Oct 1993). "Solution conformation of an antibacterial peptide, sarcotoxin IA, as determined by 1H-NMR.". Eur J Biochem. 217 (2): 639–44. PMID 8223606. doi:10.1111/j.1432-1033.1993.tb18287.x. 
  2. ^ Okada M, Natori S (1984). "Mode of action of a bactericidal protein induced in the haemolymph of Sarcophaga peregrina (flesh-fly) larvae". Biochem J. 222 (1): 119–124. PMC 1144151Freely accessible. PMID 6383355. 

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