Unliganded HIV-1 gp120 core structures assume the CD4-bound conformation with regulation by quaternary interactions and variable loops.
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Proc Natl Acad Sci U S A. 2012 Apr 10;109(15):5663-8. doi: 10.1073/pnas.1112391109. Epub 2012 Mar 26.
Proc Natl Acad Sci U S A. 2012.
PMID: 22451932
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