Free radical‐initiated peptide sequencing (FRIPS)‐based cross‐linkers for improved peptide and protein structure analysis. Issue 2 (16th April 2018)

• Record Type: Journal Article
• Authors: Iacobucci, Claudio; Schäfer, Mathias; Sinz, Andrea
• Other Names: Kuck Dietmar guestEditor.; Grotemeyer Jürgen guestEditor.
• Is Part Of: Mass spectrometry reviews. Volume 38:Issue 2(2019)
• Page Start: 187
• Page End: 201
• Publication Date: 2018-04-16
• Subjects: free radical‐initiated peptide sequencing FRIPS -- peptide cross‐linking -- protein 3D‐structure; Mass spectrometry -- Periodicals; 543
• DOI: 10.1002/mas.21568
• Languages: English
• ISSNs: 0277-7037

Abstract

Abstract : Free radical‐initiated peptide sequencing (FRIPS) has recently been introduced as an analytical strategy to create peptide radical ions in a predictable and effective way by collisional activation of specifically modified peptides ions. FRIPS is based on the unimolecular dissociation of open‐shell ions and yields fragments that resemble those obtained by electron capture dissociation (ECD) or electron transfer dissociation (ETD). In this review article, we describe the fundamentals of FRIPS and highlight its fruitful combination with chemical cross‐linking/mass spectrometry (MS) as a highly promising option to derive complementary structural information of peptides and proteins. FRIPS does not only yield exhaustive sequence information of cross‐linked peptides, but also defines the exact cross‐linking sites of the connected peptides. The development of more advanced FRIPS cross‐linkers that extend the FRIPS‐based cross‐linking/MS approach to the study of large protein assemblies and protein interaction networks can be eagerly anticipated.