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. 2003 Jun;121(6):495–510. doi: 10.1085/jgp.200208770

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Copyright © 2003, The Rockefeller University Press

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Figure 4. — Crystal structure of Gβγ with mutated residues highlighted. (Top) Ribbon model of Gβγ is shown with its Gα binding surface fully exposed. The green strand is Gγ and the blue is Gβ. The NH₂ termini of each are in the upper left hand corner. The COOH terminus of Gβ is located on the end of the β stand next to the W332 residue. The COOH terminus of Gγ is in the lower right-hand corner. Residues studied are highlighted in red. (Bottom) Space fill model of Gβγ. Residues are divided into four regions based on their location according to the full set of residues that interact with Gα.