. 2002 Aug 16;99(18):11616–11621. doi: 10.1073/pnas.182095699

Table 2.

Characteristics of tightest binding aptamers

Aptamer	No. sequences		K_d, nM	k_off, min⁻¹	Pool of origin
Aptamer	Unique	Total	K_d, nM	k_off, min⁻¹	Pool of origin
9-4	1	10	25	0.0027	Designed
10-10	1	1	28	0.01	Designed
Class I	13	16	60–300	0.06	12 designed/1 random
10-59	1	6	200	0.027	Random
9-12	1	9	250	0.03	Random
10-24	1	1	250	—	Designed
10-6	1	1	500	—	Designed