Label-free quantification: Difference between revisions
From Mass Spec Terms
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Revision as of 17:45, 4 April 2014
| DRAFT DEFINITION | 
| Label-free quantification | 
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| Method of determining the concentration of proteins through a combination of protein digestion and LC/MS without relying on stable isotope labeling. Protein quantification is achieved by measuring the signal intensity of peptide ions corresponding to a protein or by counting and comparing the number of fragment mass spectra identifying peptides of a given protein. | 
| Related Term(s): | 
| Reference(s): M. Bantscheff, M. Schirle, G. Sweetman, J. Rick, B. Kuster, Anal. Bioanal. Chem. 389 (2007) 1017. | 
| This is an unofficial draft definition presented for information and comment. | 
