Similar to the
endogenous analysis of the N-acyldopamines, the levels of 13C-Npalmitoyldopamine
and 13C-N-palmitoyldopamine quinone were
combined and represented as a total amount for 13C-palmitoyldopamine.
The total palmitamide (13C-labeled and unlabeled) in the D.
melanogaster heads that were grown in the presence of [1-13C]-
palmitic acid was 150 pmol g1
, consistent with the endogenous
amount of palmitamide reported, 130 ± 80 pmol g1
. A similar
trend was also observed for N-palmitoyldopamine.