| Literature DB >> 11795805 |
BarnesCatherineA Srebalus1, Amy E Hilderbrand, Stephen J Valentine, David E Clemmer.
Abstract
A reversed-phase high-performance liquid chromatography (HPLC) separation approach has been combined with ion mobility/time-of-flight (TOF) mass spectrometry in order to characterize a combinatorial peptide library designed to contain 4000 peptides of the general form NH2-Xxx-Xxx-XXX-CO2H, NH2-Ala-Xxx-Xxx-Xxx-CO2H, NH2-Ser-Ala-Xxx-Xxx-Xxx-CO2H and NH2-Leu-Ser-Ala-Xxx-Xxx-Xxx-CO2H (where Xxx represents a randomization over 10 different amino acids: Ala, Arg, Asp, Glu, Gly, Leu, Lys, Phe, Ser, and Val). Addition of the gas-phase mobility separation between the HPLC separation and TOF measurement dimensions makes it possible to resolve many peptide isomers that have identical retention times (and masses).Mesh:
Substances:
Year: 2002 PMID: 11795805 DOI: 10.1021/ac0108562
Source DB: PubMed Journal: Anal Chem ISSN: 0003-2700 Impact factor: 6.986