Anti-P18SRP antibodies enable researchers to detect and measure the P18SRP antigen in biological samples. This target is a reported synonym of the SREK1IP1 gene, which encodes SREK1 interacting protein 1. This protein is known to function in mRNA processing and RNA splicing, among other biological roles. The human version of P18SRP has a canonical amino acid length of 155 residues and a protein mass of 18.2 kilodaltons. It is reported to be notably expressed in many tissues, such as the bronchus and fallopian tube.