出典:Wikipedia
出典:『Wikipedia』 (2011/05/10 01:25 UTC 版)
The nuclear capping enzyme complex (CEC) required for 5’-end capping may be found bound to the RNA polymerase II (Pol II) before transcription starts. As soon as the 5' end of the new transcript emerges the enzymes transfer to it and begin the capping process (this mechanism to ensure capping is similar to that used for polyadenylation).