2V4Z:
reference: Structural determinants of G-protein alpha subunit selectivity by regulator of G-protein signaling 2(RGS2)., Kimple AJ, Soundararajan M, Hutsell SQ, Roos AK, Urban DJ, Setola V, Temple BR, Roth BL, Knapp S, Willard FS, Siderovski DP, J Biol Chem. 2009 May 28. PMID: 19478087

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