Anti-Growth hormone-regulated TBC protein 1 antibodies enable researchers to detect and measure the Growth hormone-regulated TBC protein 1 antigen in biological samples. This target is a reported synonym of the GRTP1 gene, which encodes growth hormone regulated TBC protein 1. This protein is known to function in GTPase activation, among other biological roles. The human version of Growth hormone-regulated TBC protein 1 has a canonical amino acid length of 336 residues and a protein mass of 38.6 kilodaltons, although 3 isoforms have been identified. It is reported to be widely expressed in many tissue types.