De novo sequencing of novel Cab−SG−MIH.
A, CID spectrum of intact Cab−SG−MIH (m/z 1278.055, charge state +7). B, C, MS and MS/MS spectrum of tryptic peptide TAEMSQLR from Cab−SG−MIH. D, Zoom-in ECD spectrum of DTT-reduced Cab−SG−MIH. E, Sequence assembling of Cab−SG−MIH.