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HIV
Gene structure
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Precusor gp160 ----> gp120 , gp41
gp120(SU:surface protein)
gp41 (TM:transmenbrane protein)
gp120-gp41 form a heterodimer
The oligomeric arrangement of Env may be important for multivalent
interaction with the CD4 receptor during viron attachment to the cell sulface.
