GPRIN2 is annotated in UniProt with a deliberately cautious function: it may be involved in neurite outgrowth. Neurite outgrowth is the process by which developing neurons extend projections, and the annotation places GPRIN2 in that area of biology without defining a mechanism. No catalytic activity or enzyme class is assigned to the protein. The name, G protein-regulated inducer of neurite outgrowth 2, reflects both the proposed role in neurite outgrowth and a connection to G protein regulation.

The GPRIN2 gene is found at 10q11.22 and encodes a protein of 458 amino acids (UniProt O60269; NCBI Gene 9721; HGNC:23730). The NCBI Gene summary, provided by the Alliance of Genome Resources, describes GPRIN2 as predicted to be involved in neuron projection development and predicted to be active in the plasma membrane. These statements are predictions rather than experimentally established findings, and UniProt does not currently annotate a subcellular location. HGNC does not assign the gene to a defined gene group, and the sources supplied do not describe tissue expression, interaction partners or isoforms.

The gene was formerly designated KIAA0514, a name typical of long cDNA clones identified in large-scale sequencing projects, and MGC15171 is also listed as an alias. Researchers working with the GPRIN2 gene or GPRIN2 protein will find that the literature is limited, so the annotation above is best treated as a starting hypothesis. It frames GPRIN2 as a candidate worth examining in studies of neuronal morphology, neuron projection development and membrane-associated signalling.