RNA-binding protein required for assembly of the holoenzyme telomerase ribonucleoprotein (RNP) complex (PubMed:15131081, PubMed:15696174, PubMed:16507983, PubMed:17322903, PubMed:20713447, PubMed:22315458, PubMed:22705372). Telomerase is an essential ribonucleoprotein enzyme that copies new telomeric repeats onto chromosome ends by repetitively synthesizing the short telomere-repeat sequence 5'-TTGGGG-3' using an RNA template component TER (PubMed:15696174, PubMed:17322903, PubMed:20713447). TAP65/p65 specifically binds telomerase RNA template TER and is required for biogenesis and placement of the TER stem-terminus element: TAP65/p65 first protects the 3'-end of TER from degradation and acts as a chaperone to correctly fold TER for protein binding; it then bends TER stem-loop IV to position it for interaction of stem-loop IV with catalytic TERT RNA-binding domain (PubMed:15696174, PubMed:17322903, PubMed:20713447, PubMed:22315458, PubMed:22705372). Component of the telomerase holoenzyme complex, composed of the catalytic core (the catalytic subunit TERT, the telomerase RNA template component TER and TAP65/p65), which is associated with two heterotrimeric subcomplexes: (i) the replication protein A (RPA)-related subcomplex, composed of TEB1, RPA2/TEB2 and RPA3/TEB3 and (ii) the CST-like subcomplex, composed of TAP75/p75, TAP45/p45 and TAP19/p19 (PubMed:15696174, PubMed:17322903, PubMed:20713447, PubMed:19941821, PubMed:22705372, PubMed:23552895, PubMed:26472759, PubMed:29775593). TEB1 and the CST-like subcomplex are tethered to the catalytic core by TAP50/p50 (PubMed:19941821, PubMed:23552895, PubMed:26472759, PubMed:29775593). The HTH La-type RNA-binding and RRM domains cooperatively bind to TER RNA UUU-3'OH sequence after it is transcribed by Polymerase III (PubMed:22705372). UUU-3'OH-binding by the HTH La-type RNA-binding and RRM domains positions the xRRM domain to bind to the adjacent proximal stem-loop IV and central dinucleotide GA bulge (PubMed:22705372). Critically short telomeres (PubMed:15131081). Reduced accumulation of telomerase RNA TER (PubMed:15131081). Belongs to the LARP7 family.