Envelope Conformational Changes Induced by Human Immunodeficiency Virus Type 1 Attachment Inhibitors Prevent CD4 Binding and Downstream Entry Events. - Hsu-Tso Ho; Li Fan; Nowicka-Sans, Beata; McAuliffe, Brian; Chang-Ben Li; Yamanaka, Gregory; Nannan Zhou; Hua Fang; Dicker, Ira; Dalterio, Richard; Yi-Fei Gong; Tao Wang; et al. (Journal of Virology, 2006)