Anti-HNRNPLL antibodies are used in the immunodetection of the protein heterogeneous nuclear ribonucleoprotein L like. In humans, the canonical protein has a reported length of 542 amino acid residues and a mass of 60.1 kDa. Alternative splicing is reported to yield 5 different isoforms for this protein. It is widely expressed across many tissue types. HNRNPLL is reported to be a RNA-binding protein that functions as regulator of alternative splicing for multiple target mRNAs, including PTPRC/CD45 and STAT5A. Synonyms for this target antigen include stromal RNA regulating factor.