has primary input or output ribonucleic acid metabolic process RNA metabolic process GO:0016070 The cellular chemical reactions and pathways involving RNA, ribonucleic acid, one of the two main type of nucleic acid, consisting of a long, unbranched macromolecule formed from ribonucleotides joined in 3',5'-phosphodiester linkage. RNA metabolism Reactome:R-HSA-8953854 nucleic acid metabolic process