Table 4.

K_i for purines on the transport of [³H]-adenosine by TvxNT3.

	Ki
	AVG	SEM	n	ΔG0	δ(ΔG0)
Adenosine	1.41	0.35	3	−33.38
Guanosine	1.37	0.13	3	−33.45	0.07
Inosine	0.18	0.05	3	−38.46	5.08
2′-deoxyadenosine	1.06	0.29	3	−34.1	0.70
5′-deoxyadenosine	1.10	0.12	3	−34.0	0.63
Cordycepin	8.6	1.4	3	−28.91	−4.47
Tubercidin	287	55	3	−20.21	−13.17
Nebularine	4.6	1.1	4	−30.4	−2.94
6-thioinosine	4.03	0.78	4	−30.8	−7.7
3-deazainosine	33.0	17.4	4	−25.6	−12.9
Adenine	2.43	0.14	2	−32.04	−1.34
Hypoxanthine	1.75	0.17	3	−32.85	−7.45
Uridine	720	110	3	−17.93	−15.45
Thymidine	603	51	3	−18.37	−15.01

IC₅₀ values obtained were converted to K_i based on the K_m of adenosine. See legends to Table 1 and Table 3 for further information.