Anti-GBF1 antibodies are used in the immunodetection of the protein golgi brefeldin A resistant guanine nucleotide exchange factor 1. In humans, the canonical protein has a reported length of 1859 amino acid residues and a mass of 206.4 kDa. Its subcellular localization is in the membrane, ER, golgi, and cytoplasm. Alternative splicing is reported to yield 3 different isoforms for this protein. It is ubiquitously expressed across many tissue types. Among its functions, GBF1 is involved with viral immune response and cilium assembly. Post-translational modifications have been described, including phosphorylation. Synonyms for this target antigen include CMT2GG, CMTDI2, CMTDIA, Golgi-specific brefeldin A-resistance guanine nucleotide exchange factor 1, BFA-resistant GEF 1, and ARF1GEF.