Title : Impact of G12 Mutations on the Structure of K-Ras Probed by Ultraviolet Photodissociation Mass Spectrometry.

Pub. Date : 2016 Oct 12

PMID : 27665622






4 Functional Relationships(s)
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1 Complexes between K-Ras or the G12X mutants and guanosine 5"-diphosphate (GDP) or GDPnP (a stable GTP analogue) were transferred to the gas phase by nano-electrospray ionization and characterized using UVPD. Guanosine Diphosphate KRAS proto-oncogene, GTPase Homo sapiens
2 Complexes between K-Ras or the G12X mutants and guanosine 5"-diphosphate (GDP) or GDPnP (a stable GTP analogue) were transferred to the gas phase by nano-electrospray ionization and characterized using UVPD. Guanosine Diphosphate KRAS proto-oncogene, GTPase Homo sapiens
3 Variations in the efficiencies of backbone cleavages were observed upon substitution of GDPnP for GDP as well as for the G12X mutants relative to wild-type K-Ras. Guanosine Diphosphate KRAS proto-oncogene, GTPase Homo sapiens
4 An increase in the fragmentation efficiency in the segment containing the first 50 residues was observed for the K-Ras/GDPnP complexes relative to the K-Ras/GDP complexes, whereas a decrease in fragmentation efficiency occurred in the segment containing the last 100 residues. Guanosine Diphosphate KRAS proto-oncogene, GTPase Homo sapiens