(''Z'')-4-Amino-2-butenoic acid (CACA, ''cis''-4-aminocrotonic acid) is a

GABA receptor The GABA receptors are a class of receptors that respond to the neurotransmitter gamma-aminobutyric acid (GABA), the chief inhibitory compound in the mature vertebrate central nervous system. There are two classes of GABA receptors: GABAA and ...

partial agonist In pharmacology, partial agonists are drugs that bind to and activate a given receptor, but have only partial efficacy at the receptor relative to a full agonist. They may also be considered ligands which display both agonistic and antagonistic e ...

selective for the GABA-ρ (previously known as GABA) subtype.

References

Amino acids Alkene derivatives GABAA-rho receptor agonists {{nervous-system-drug-stub