Design clues from functional constraints and broadly neutralizing antibodies by Dimitrov Dimiter S, Burton Dennis R, Arthos James, Zwick Michael B, Zhang Mei-Yun, Yang Xinzhen, Xiang Shi-Hua, Van Ryk Donald, Majeed Shahzad, Hessell Ann J, Dey Barna, Xu Ling, Zhou Tongqing, Sodroski Joseph, Wyatt Richard, Nabel Gary J, Kwong Peter D