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. Author manuscript; available in PMC: 2016 May 1.
Published in final edited form as: Trends Biochem Sci. 2015 Apr 13;40(5):257–264. doi: 10.1016/j.tibs.2015.03.005

Figure I. The “CTD code”.

Figure I

For each amino acid of the heptad repeat of the C-terminal domain (CTD) of the largest subunit of the RNA polymerase II (RNAPII) is indicated the known functions of the corresponding modification.