Telomerase RNA component, also known as TR, TER or TERC, is an ncRNA found in eukaryotes that is a component of telomerase, the enzyme used to extend telomeres.[3][4] TERC serves as a template for telomere replication (reverse transcription) by telomerase. Telomerase RNAs differ greatly in sequence and structure between vertebrates, ciliates and yeasts, but they share a 5'pseudoknot structure close to the template sequence. The vertebrate telomerase RNAs have a 3' H/ACAsnoRNA-like domain.[5][6][7]
^Theimer CA, Feigon J (June 2006). "Structure and function of telomerase RNA". Current Opinion in Structural Biology. 16 (3): 307–18. doi:10.1016/j.sbi.2006.05.005. PMID16713250.