4IGU:
reference: Double suppression of the Galpha protein activity by RGS proteins., Lin C, Koval A, Tishchenko S, Gabdulkhakov A, Tin U, Solis GP, Katanaev VL, Mol Cell. 2014 Feb 20;53(4):663-71. doi: 10.1016/j.molcel.2014.01.014. PMID: 24560274

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