CCACCA tRNA nucleotidyltransferase activity
Catalysis of the reaction: a tRNA with a 3' CCA end + 2 CTP + ATP = a tRNA with a 3' CCACCA end + 3 diphosphate.
GO:0070567
cytidylyltransferase activity
is_a
GO:0140101
catalytic activity, acting on a tRNA
is_a