Extended Data Fig. 2: G12Si-1 does not react with GppNHp-loaded K-Ras(G12S).
From: Chemical acylation of an acquired serine suppresses oncogenic signaling of K-Ras(G12S)

Modification of K-Ras(G12D)•GDP and K-Ras(G12D)•GppNHp by G12Si-1 was monitored by whole protein mass spectrometry.