Exploring Top-Down Mass Spectrometric Approaches To Probe Forest Cobra (Naja melanoleuca) Venom Proteoforms

Three main top-down mass spectrometry methodologies were employed in a proof-of-concept study to characterise selected three finger toxins and phospholipase A2 toxins from the forest cobra (Naja melanoleuca) venom. The novel utility of data-independent acquisition, alternative hybrid ECD-CID fragmentation and the incorporation of cyclic ion mobility separation in a top-down proteomic workflow were explored for snake venom proteins.