Evidence of Divergent Amino Acid Usage in Comparative Analyses of R5- and X4-Associated HIV-1 Vpr Sequences

Table 1

Identification of HIV-1 Vpr sequences colinear to Env-V3 sequences defined as R5 or X4. A total of 1010 Vpr sequences were classified according to coreceptor utilization using WebPSSM [19].

Source	CCR5	CXCR4
LANL	949	32
CARES	20	9
Total	969	41