Ribonucleotide triphosphate: the basic building blocks for making RNAplugin-autotooltip__default plugin-autotooltip_bigRNA sequencing (RNAseq): an experimental technique that sequences all the RNAs in a sample. It is based off of converting RNAs into cDNAs with reverse transcriptase, followed by Illumina sequencing.. Includes ATP, GTP, CTP, and UTP.