Novel peptide chemistry in terrestrial animals: Natural luciferin analogues from the bioluminescent earthworm fridericia heliota
KGaA, Weinheim. We report isolation and structure elucidation of AsLn5, AsLn7, AsLn11 and AsLn12: novel luciferin analogs from the bioluminescent earthworm Fridericia heliota. They were found to be highly unusual modified peptides, comprising either of the two tyrosine-derived chromophores, CompX or CompY and a set of amino acids, including threonine, gamma-aminobutyric acid, homoarginine, and unsymmetrical N,N-dimethylarginine. These natural compounds represent a unique peptide chemistry found in terrestrial animals and rise novel questions concerning their biosynthetic origin.
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- - (January 6, 2014 December 31, 2018). . Grant, RSF.