The function of ENSG00000168028 (RPSA, ribosomal protein SA) is as follows. Required for the assembly and/or stability of the 40S ribosomal subunit. Required for the processing of the 20S rRNA- precursor to mature 18S rRNA in a late step of the maturation of 40S ribosomal subunits. Also functions as a cell surface receptor for laminin. Plays a role in cell adhesion to the basement membrane and in the consequent activation of signaling transduction pathways. May play a role in cell fate determination and tissue morphogenesis. Acts as a PPP1R16B-dependent substrate of PPP1CA. {ECO:0000255|HAMAP- Rule:MF_03016, ECO:0000269|PubMed:16263087, ECO:0000269|PubMed:6300843}. (Microbial infection) Acts as a receptor for the Adeno- associated viruses 2,3,8 and 9. . (Microbial infection) Acts as a receptor for the Dengue virus. . (Microbial infection) Acts as a receptor for the Sindbis virus. . (Microbial infection) Acts as a receptor for the Venezuelan equine encephalitis virus. . (Microbial infection) Acts as a receptor for the pathogenic prion protein. {ECO:0000269|PubMed:11689427, ECO:0000269|PubMed:9396609}. (Microbial infection) Acts as a receptor for bacteria. .