English: The structural distance phylogenetic tree. tRNA 1, tRNA 2, tRNA 3, tRNA 4, control (contro), RNA Polymerase DSRNA Bacteriophage (PDB: 1HHS); RNA Polymerase Rabbit Hemorrhagic Disease Virus (PDB: 1KHV); RNA Polymerase Sapporo Virus (PDB: 2CKW); Hepatitis C RNA Polymerase (PDB: 2D41); Neurospora Crassa RNA Polymerase (PDB: 2J7N); RNA Polymerase Birnavirus (PDB: 2PGG); RNA Polymerase Infectious Bursal Disease Virus (PDB: 2PUS); RNA Polymerase Rotavirus (PDB: 2R7T); RNA Polymerase Infectious Pancreatic Necrosis Virus (PDB: 2YI8); RNA Polymerase Cypoviruses (PDB: 3JA4); Enterovirus A RNA Polymerase (PDB: 3N6L); RNA Polymerase Norwalk Virus (PDB: 3UQS); RNA Polymerase Rotavirus A (PDB: 4AU6); RNA Polymerase Thosea Assigns Virus (PDB: 4XHA); Rhinovirus A (PDB: 1XR7); Enterovirus C (PDB: 3OL6); Foot-and-Mouth Disease Virus (PDB: 1U09); Cardiovirus A (PDB: 4NZ0); Japanese Encephalitis Virus (PDB: 4HDH); Dengue Virus (PDB: 2J7U); Bovine Viral Diarrhea Virus 1 (PDB: 1S48); Qbeta Virus (PDB: 3MMP); Reovirus (PDB: 1MUK); and La Crosse Bunyavirus (PDB: 5AMQ).