Table III. Nucleotides +7, +8 and +9 have a 10-fold effect on readthrough.

Sequencea							Readthrough efficiency (%)	Vector name
			+1	+4	+7	+10
GCA	ACA	CAA	TAG	CAA	TTA	CAG	30	(pAC-TMV)
G	T	Q	*	Q	L	Q
---	---	---	---	---	GAA	---	3	(pAC-GAA)
					E
---	---	---	---	---	---	TAT	14	(pAC-TAT)
						Y
AAA	CCA	CAA	TAG	CAA	GAA	TAT	2	(pAC-CAAP)
K	P	Q	*	Q	E	Y
---	---	---	---	---	TTA	---	22	(pAC-TTA)
					L

^aNucleotide position (relative to the first base of the stop codon) is indicated.