Table 1.

Binding partners of CTD fragments.

	CTD fragment
Partner	NonAc(H+)	Ac(H+)	NonAc	Ac
S100B [a]	P [e]	N	P	N
Cyclin A [b]	N [f]	N	P	N
Sir2 [c]	N	P	N	N
CBP [d]	N	N	N	P

[a] Complex structures were referred from another report.18 Binding affinity of CTD to S100B was determined from an in vitro experiment.22

[b] Complex structures were referred from another report.21

[c] Complex structures were referred from another report.19

[d] Complex structures were referred from another report.20

[e] Mark “P” means that CTD can bind to the partner.

[f] Mark “N” means that CTD cannot bind to the partner.