Immunogen sequence: DKPRLISGVS RPDEVLECIE RGVDLFESFF PYQVTERGCA LTFSFDYQPN PEETLLQQNG TQEEIKCMDQ IKKIETTGC Highest antigen sequence identity to the following orthologs: Mouse - 87%, Rat - 90%. Interacts with QTRT1 to form an active queuine tRNA-ribosyltr