Table 3.

Amino acid analysis retention times (RT) of amino acids released from ornithine lipid, proposed lysine lipid (group I, LL), proposed lysine lipid with hydroxylated fatty acid (group I', LL_HFA), and proposed hydroxylysine lipid with hydroxylated fatty acid (group II', HLL_HFA) hydrolysates.

Amino acid standard	Lipid head group	Amino acid standard RT (min)	Lipid hydrolysate head group RT (min)
Ornithine	Ornithine	100.11	100.11
Lysine	I, I'	103.58	103.59, 103.61
Hydroxylysine	II'	95.99	95.63