Anti-Galpha 13 antibodies are used in antigen-specific immunodetection in biological samples. The target Galpha 13 is a known alias name of the protein G protein subunit alpha 13, encoded by the GNA13 gene in humans. This 377-amino acid residue protein is known to be involved in GPCR signaling pathways and cell differentiation, among other biological processes. It is localized to the cell membrane, nucleus, and cytoplasm of the cell and features palmitoylated and phosphorylated post-translational modifications. In terms of tissue expression, it is reported to be expressed in the testis, including in Leydig cells and in the seminiferous epithelium, in differentiating cells from the spermatogonia to mature spermatozoa stages and round spermatids. Other synonyms for Galpha 13 include G13, HG1N, and guanine nucleotide-binding protein subunit alpha-13.