Probable G protein-coupled receptor 33 (GPR33)

Probable G protein-coupled receptor 33 (GPR33) is a member of the rhodopsin-like (class A) G protein-coupled receptor (GPCR) superfamily, sharing the typical seven-transmembrane domain architecture common to this group[1][3]. However, in humans and some other species, GPR33 is classified as a pseudogene, meaning it is a non-functional gene that does not produce an active protein product. As such, it does not function as a therapeutic target nor is it involved in physiological GPCR-mediated processes in humans. There are no known approved or experimental drugs or ligands that interact with GPR33, nor are there validated roles as a disease biomarker or in therapy monitoring. It is sometimes discussed in the context of evolutionary genomic studies due to its pseudogenization in humans, but it does not represent a viable molecular target for pharmacological intervention. Notes and context: GPR33 was originally annotated as a receptor, but subsequent research has established that it is a pseudogene in humans, lacking a functional open reading frame and therefore not encoding a working receptor protein. As a member of the GPCR family, if GPR33 were functional, it would be expected to play a role in signal transduction, as does the rest of the family [1][3], but this is not the case in humans due to its pseudogene status. There are no documented interacting drugs, documented clinical biomarkers, or safety/therapeutic challenges related to GPR33 because it is not expressed as a functional protein in humans. Summary: GPR33 does not constitute an active therapeutic target in humans due to its characterization as a pseudogene; no pharmacological or clinical information is associated with it. Thus, is_target = false and is_incorrect = true (the target is not therapeutically relevant in humans, though the naming and pseudogene status may cause confusion).

Other names

GPR33G protein-coupled receptor 33probable G-protein coupled receptor 33G protein-coupled receptor 33 pseudogene