Abstract
The third variable region (V3) of the human immunodeficiency virus type 1 (HIV-1) envelope gp120 subunit participates in determination of viral infection co-receptor tropism and host humoral immune responses. Positive charge of the V3 plays a key role in determining viral co-receptor tropism. In our previous papers, we showed a key role of the V3's net positive charge in the immunological escape and co-receptor tropism evolution in vivo. On the other hand, the several papers suggested that trimeric gp120s are protected from immune system by occlusion on the oligomer, by mutational variation, by carbohydrate masking and by conformational masking. If we can reveal the mechanism of neutralization escape, we expect that we will regulate the neutralization of HIV-1. In this review, we will overview the structural mechanism of neutralization escape of HIV-1 gp120 examined by computational science. The computational sciences for virology can provide more valuable information in combination with genomic and experimental science.
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