Table 2.

Yields shown in Table 1 recast to show the degree of modification M(base) by each of the four bases.^a M(base) equals 1.0 when the yield of a base expressed as a percentage of the total fbr G_%(base) is equal to the mole fraction F_%(base) of that base in the oligomer. When M(base) = 1.0, the base does not, on average, modify its own release.

DNA	Γ	%GC	M(base) = G%(base) ÷ F%(base)
			Cyt		Gua		Thy		Ade
pUC18	2.5	50.6	1.21	(0.03)	0.86	(0.03)	1.03	(0.03)	0.91	(0.03)
	22.5		0.86	(0.06)	0.88	(0.14)	1.22	(0.19)	1.05	(0.11)
Calf thymus	2.5	41.8	1.21	(0.1)	1.09	(0.1)	0.89	(0.1)	0.89	(0.1)
Calf thymus	2.5		1.24	(0.06)	1.22	(0.03)	0.84	(0.02)	0.84	(0.03)
d(CGCGCG- CGCG)2	2.5	100	0.66	(0.05)	1.34	(0.06)
	7.5		0.66	(0.08)	1.34	(0.11)
	11.3		0.56	(0.06)	1.44	(0.05)
	15		0.71	(0.28)	1.29	(0.45)
	22		0.45	(0.11)	1.55	(0.19)
	7		0.80	(0.09)	1.20	(0.08)
d(CGCGAA- TTCGCG)2	2.5	66.6	0.96	(0.11)	1.35	(0.11)	0.59	(0.03)	0.79	(0.13)
	7.5		0.99	(0.12)	1.09	(0.06)	0.88	(0.04)	0.97	(0.04)
	11.3		0.77	(0.03)	1.64	(0.04)	0.29	(0.01)	0.91	(0.03)
	22		1.12	(0.09)	1.27	(0.07)	1.14	(0.06)	1.43	(0.08)
	15		0.43	(0.04)	1.07	(0.08)	0.31	(0.03)	1.57	(0.06)
Micrococcus luteus	2.5	72	1.08	(0.26)	1.06	(0.16)	0.84	(0.06)	0.82	(0.10)
	7.5		1.33	(0.30)	0.85	(0.05)	0.73	(0.04)	0.81	(0.05)
	11.3		1.10	(0.09)	0.99	(0.05)	0.87	(0.04)	0.91	(0.04)
	22.5		1.44	(0.32)	0.66	(0.08)	0.87	(0.08)	0.85	(0.06)
Clostridium perfringens	2.5	28.4	2.51	(0.50)	1.27	(0.10)	0.50	(0.02)	0.79	(0.07)
	11.3		1.79	(0.17)	1.47	(0.13)	0.58	(0.04)	0.92	(0.03)
	22.5		1.84	(0.33)	1.46	(0.27)	0.71	(0.05)	0.77	(0.05)

^aStandard deviations (±1 sd) are shown in parentheses.