Pronunciation: ˌ j ē -( ˌ )p ē - ˌ w ə n- ' twen-t ē
Function: noun
Etymology: g lyco p rotein
Date: 1985
: a glycoprotein protruding from the outer surface of the HIV virion that has a molecular weight of 120 and must bind to a CD4 receptor on a T cell bearing such receptors before infection of the cell can occur