1% formic acid (v/v). MS/MS spectra were analyzed using PEAKS Studio Version 4.5 SP2 [Bioinformatics Solutions]. The mass data collected during LC/MS/MS analysis were processed, converted into mgf files, and compared against the Ludwig NR database by using a local MASCOT server. The three most abundant peptides, preferably doubly charged ions, corresponding to each MS spectrum were selected for further isolation and fragmentation. The MS/MS scanning was performed in the ultrascan

resolution mode at a rate of change in the m/z of 26.000 s-1. Acknowledgements This work was financially supported by the Council of Scientific and Industrial Research (CSIR), and University Grants Commission (UGC), New Delhi, India. The facility

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