Identification of chaperonin GroEL (Rv0440) with representative MS/MS spectrum. Identification of chaperonin GroEL (Rv0440) with representative MS/MS spectrum.A, Chaperonin GroEL was identified on the basis of 65 unique peptides from a total 14,151 MS/MS spectra with 93% protein coverage. B, A representative MS/MS spectrum of peptide TDDVAGDGTTTATVLAQALVR identified from GroEL (Rv0440). Dhanashree S. Kelkar et al. Mol Cell Proteomics 2011;10:M111.011627 © 2011 by The American Society for Biochemistry and Molecular Biology, Inc.