Anti-NPTX1 antibodies are used in the immunodetection of the protein neuronal pentraxin 1. In humans, the canonical protein has a reported length of 432 amino acid residues and a mass of 47.1 kDa. Its subcellular localization is in the cytoplasmic vesicles. It is notably expressed in the hippocampus, cerebral cortex, cerebellum, and caudate. NPTX1 is suspected to be involved in mediating uptake of synaptic material during synapse remodeling or in mediating the synaptic clustering of AMPA glutamate receptors at a subset of excitatory synapses. Post-translational modifications have been described, including glycosylation. Synonyms for this target antigen include SCA50, NP-I, neuronal pentraxin I, and NP1. NPTX1 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. A number of Nptx1 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. ELISA, Immunofluorescence, and Immunohistochemistry are also common applications.