Analysis of identified putative peptides with CESs. The numbers of identified peptides with a poly-Ala tract at the N terminus or the C terminus or no poly-Ala tract of CESs were counted. Identified putative C-terminal peptides were searched from a custom database for the MS/MS data. See the text andSTAR Methodsfor details. See alsoFigures S2andS3andTable S1for the list of all identified peptides.
