Supplementary Figure 1: Characterization of cNW9 by MS/MS confirms the ligation of the C terminus to the N terminus.
From: Covalently circularized nanodiscs for studying membrane proteins and viral entry
MS/MS spectrum of a tryptic fragment of cNW9 showing the ligation of the C-terminal motif (LNTQLPGTG-His6) to the N-terminal residues (GSTFSK). Expected masses for b and y ions along with the peptide sequence are listed in the table. The b and y ions that were identified in the MS/MS spectrum are highlighted in blue and red. The full amino acid sequence of linear NW9 is shown at the top.
