Combining with L-DOPA to initiate a change in cell activity. L-DOPA is the modified amino acid (2S)-2-amino-3-(3,4-dihydroxyphenyl) propanoic acid, and is the precursor to dopamine, norepinephrine (noradrenaline) and epinephrine.
L-beta-(3,4-Dihydroxyphenyl)alanine receptor activity