Ready-to-use ELISA kits are available for the detection of FIP1 like 1 (S. cerevisiae), an alias of the protein, factor interacting with PAPOLA and CPSF1. The official gene symbol is FIP1L1. The protein, with a mass of 66.5 kDa and length of 594 residues, is reported to be nuclear. It is a member of the FIP1 family and may be known by other names, including: Rhe, rearranged in hypereosinophilia, FIP1L1 cleavage and polyadenylation specific factor subunit, FIP1-like 1 protein, FIP1 like 1, and pre-mRNA 3'-end-processing factor FIP1.