TABLE 2.

Numbers of active and inactive classified mutants in each library

Library no.	Diversified positions	No. of double mutants		Total no.
		Active (% of total)	Inactive	Active (% of total)	Inactive
1	33, 40	184 (94)	11	211 (95)	11
2	40, 47	83 (98)	2	114 (98)	2
3	45, 87	53 (82)	12	67 (84)	13
4	32, 38	96 (96)	4	109 (96)	4
5	33, 45	92 (100)	0	114 (100)	0
6	47, 91	24 (100)	0	45 (98)	1
7	34, 35	18 (90)	2	36 (95)	2
8	74, 83	12 (21)	46	22 (30)	51
9	33, 40, 87a	74b (96)	3	313 (95)	15

^aSpecific mutation I87L, not implementation of a randomized codon, at this site.

^bTriple mutants.