These p101 ELISA kits are immunodetection tools for measuring the levels of p101 in biological samples. p101 is an alias of the human PIK3R5 gene, which encodes the protein, phosphoinositide-3-kinase regulatory subunit 5. Notably, p101 is known to play a role in GPCR signaling pathways and immune response pathways, among other functions. The PIK3R5 protein is 880 amino acid residues in length and 97.3 kilodaltons in mass. However, as many as 2 protein isoforms have been identified. It is localized to the cell membrane, nucleus, and cytoplasm of the cell. In terms of tissue specificity, it is widely expressed across many tissue types. Other names for this target antigen include F730038I15Rik, FOAP-2, and P101-PI3K. Click on the following ELISA kits for more detailed information, including target reactivity and assay sensitivity.