Role of the Membrane-Proximal Domain in the Initial Stages of Human Immunodeficiency Virus Type 1 Envelope Glycoprotein-Mediated Membrane Fusion

Volume 73, no. 7, p. 6089–6092, 1999. Page 6089, column 1, paragraph 2, line 8: Insert “These key helical domains in gp41 were originally identified by Gallaher et al. (W. R. Gallaher, J. M. Ball, R. F. Garry, M. C. Griffin, and R. C. Montelaro, AIDS Res. Hum. Retroviruses 5:431–440, 1989).”