Anti-SERP1 antibodies are used in the immunodetection of the protein stress associated endoplasmic reticulum protein 1. In humans, the canonical protein has a reported length of 66 amino acid residues and a mass of 7.4 kDa. Its subcellular localization is in the ER and membrane. A member of the RAMP4 protein family, it is known to be involved with carbohydrate metabolism and homeostasis. Synonyms for this target antigen include ribosome associated membrane protein 4, ribosome-attached membrane protein 4, and RAMP4.