TABLE 1.

Sequence analysis of donor-target junction sites produced by HIV-1 IN^a

Characteristics	No. of recombinants in expt:
	1	2
Duplications with 5 bp	23	11
Other duplications (0-4 bp)	2	1
Small deletions of 17-20 or 27-30 bp	4	1
Large deletions (>35 bp)	4	2
Total	33	15

^aIN was coexpressed in bacteria with the protein chaperones (GroEL and GroES).