This definition appears rarely
See other definitions of l-AP4
29. Nakajima, Y. , et al. , Molecular characterization of a novel retinal metabotropic glutamate receptor mGluR6 with a high agonist selectivity for L-2-amino-4-phosphonobutyrate. J Biol Chem, 1993. 268(16): p. 11868-73.