Ribonuclease which shows a preference for the pyrimidines uridine and cytosine (PubMed:15693621). Has potent antibacterial activity against a range of Gram-positive and Gram-negative bacteria, including P.aeruginosa, A.baumanii, M.luteus, S.aureus, E.faecalis, E.faecium, S.saprophyticus and E.coli (PubMed:15693621, PubMed:25075772). Causes loss of bacterial membrane integrity, and also promotes agglutination of Gram-negative bacteria (By similarity). Probably contributes to urinary tract sterility (PubMed:25075772). Bactericidal activity is independent of RNase activity (By similarity). Interacts (via N-terminus) with bacterial lipopolysaccharide (LPS). Highly expressed in spleen (at protein level) (PubMed:15693621, PubMed:25075772). Has little or no expression in healthy kidneys (at protein level) (PubMed:25075772). Detected at high levels in infected kidneys (at protein level) (PubMed:25075772). Expressed at low levels in bladder (PubMed:15693621, PubMed:25075772). Also detected in skeletal muscle, heart and bone marrow (PubMed:15693621). Up-regulated in bone marrow derived macrophages in response to the uropathogenic E.coli strain CFT073. Belongs to the pancreatic ribonuclease family.