4EFL:
reference: Crystal structures of the state 1 conformations of the GTP-bound H-Ras protein and its oncogenic G12V and Q61L mutants., Muraoka S, Shima F, Araki M, Inoue T, Yoshimoto A, Ijiri Y, Seki N, Tamura A, Kumasaka T, Yamamoto M, Kataoka T, FEBS Lett. 2012 Jun 12;586(12):1715-8. Epub 2012 May 11. PMID: 22584058

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