Component of the signal recognition particle (SRP) complex, a ribonucleoprotein complex that mediates the cotranslational targeting of secretory and membrane proteins to the endoplasmic reticulum (ER) (PubMed:6938958). SRP9 together with SRP14 and the Alu portion of the SRP RNA, constitutes the elongation arrest domain of SRP (PubMed:6938958, PubMed:6413076). The complex of SRP9 and SRP14 is required for SRP RNA binding (PubMed:6938958, PubMed:6413076). Heterodimer with SRP9; binds RNA as heterodimer (PubMed:6413076). Component of a signal recognition particle complex that consists of a 7SL RNA molecule of 300 nucleotides and six protein subunits: SRP72, SRP68, SRP54, SRP19, SRP14 and SRP9 (PubMed:6938958, PubMed:6413076). Belongs to the SRP14 family.