The function of ENDOV (endonuclease V, ENSG00000173818) is as follows. [Isoform 1]: Endoribonuclease that specifically cleaves inosine-containing RNAs: cleaves RNA at the second phosphodiester bond 3' to inosine (PubMed:23912683, PubMed:23912718, PubMed:25195743, PubMed:27573237, PubMed:31703097). Active against both single-stranded and double-stranded RNAs (PubMed:25195743, PubMed:31703097). Has strong preference for single-stranded RNAs (ssRNAs) toward double-stranded RNAs (dsRNAs) (PubMed:23912718). Cleaves mRNAs and tRNAs containing inosine (PubMed:23912683, PubMed:31703097). Also able to cleave structure-specific dsRNA substrates containing the specific sites 5'- IIUI-3' and 5'-UIUU-3' (PubMed:23912718, PubMed:27573237). Inosine is present in a number of RNAs following editing; the function of inosine- specific endoribonuclease is still unclear: it could either play a regulatory role in edited RNAs, or be involved in antiviral response by removing the hyperedited long viral dsRNA genome that has undergone A- to-I editing (Probable). Binds branched DNA structures (PubMed:23139746). {ECO:0000269|PubMed:23139746, ECO:0000269|PubMed:23912683, ECO:0000269|PubMed:23912718, ECO:0000269|PubMed:25195743, ECO:0000269|PubMed:27573237, ECO:0000269|PubMed:31703097, ECO:0000305}. [Isoform 6]: Endoribonuclease that specifically cleaves inosine-containing RNAs: cleaves RNA at the second phosphodiester bond 3' to inosine (PubMed:31703097). Active against both single-stranded and double-stranded RNAs (PubMed:31703097). Cleaves tRNAs containing inosine (PubMed:31703097). . [Isoform 7]: Endoribonuclease that specifically cleaves inosine-containing RNAs: cleaves RNA at the second phosphodiester bond 3' to inosine (PubMed:31703097). Active against both single-stranded and double-stranded RNAs (PubMed:31703097). Cleaves tRNAs containing inosine (PubMed:31703097). .