Table 3.

Summary of results of statistical comparison between the charge of amino acid positions from R4X4 and R5 sequences

Mann–Whitney U test
Rank	HXB2 residue	Positiona	p (U-test)b	p (QFD = .05)c	p (QFD = .10)c	Location
1	N	636	.0002	.00086	.0017	HR2
χ2 test
Rank	HXB2 residue	Position	p (X 2)b	p (QFD = .05)c	p (QFD = .10)c
1	N	636	.00004	.00086	.0017	HR2
2	L	602	.00005	.0017	.0034	Loop
3	Q	658	.0010	.0026	.0052	HR2
4	N	809	.0050	.0034	.0068	LLP-3
5	A	667	.0055	.0043	.0086	MPER
6	R	841	.0078	.0052	.0104	LLP-1

^aResidue number is based on the sequence of HXB2 gp120

^bBold characters indicate positions with significant p values using Q_FD = .05. Normal characters indicate positions with significant p values using Q_FD = .1

^cBenjamini-Hochberg critical p values