N(6)-[(E)-but-2-enoyl]-L-lysine residue
n(6)-[(e)-but-2-enoyl]-l-lysine residue
An <em>N</em><small><sup>6</small></sup>-acyl-<small>L</small>-lysine residue derived from <em>N</em><small><sup>6</small></sup>-[(<i>E</i>)-but-2-enoyl]-<small>L</small>-lysine.