The function of ENSG00000258818 (RNASE4, ribonuclease A family member 4) is as follows. Cleaves preferentially after uridine bases (PubMed:3467790). Has antimicrobial activity against uropathogenic E.coli (UPEC) (PubMed:33818125). Probably contributes to urinary tract sterility (PubMed:33818125). {ECO:0000269|PubMed:33818125, ECO:0000269|PubMed:3467790}.