TABLE 2.

RT finger inserts in the ViroLogic database

Size of insert (no. of amino acids)	Amino acids at 69a position	No. of sequences with indicated insertb
1	NN	1
1	SN	2
1	ST	1
1	TD	2
1	TN	3
1	TT	18
2	AEA	2
2	AEG	1
2	ASA	1
2	AVA	1
2	AVG	2
2	SCA	1
2	SCG	3
2	SEA	2
2	SES	4
2	SQS	1
2	SSA	4
2	SSG	10
2	SSS	24
2	SST	6
2	STT	1
2	SVG	6
2	SVS	1
2	SVT	3
5	DRKGSE	1
8	TSTGKKDST	1

^aThe amino acids between positions 68 and 70 are shown. Thus, 2 aa are shown for a 1-aa insert, 3 aa for a 2-aa insert, etc.

^bOf the 134 total samples with insertion mutations, only those with no heterogeneity in the sequence (n = 102) are shown.