title: Protein amino-terminal modifications and proteomic approaches for N-terminal profiling.
abstract: Amino-/N-terminal processing is a crucial post-translational modification affecting almost all proteins. In addition to altering the chemical properties of the N-terminus, these modifications affect protein activation, conversion, and degradation, which subsequently lead to diversified biological functions. The study of N-terminal modifications is of increasing interest; especially since modifications such as proteolytic truncation or pyroglutamate formation have been linked to disease processes. During the past decade, mass spectrometry has played an important role in facilitating the investigation of N-terminal modifications. Continuous progress is being made in the development and application of robust methods for the dedicated analysis of native and modified protein N-termini in a proteome-wide manner. Here we highlight recent progress in our understanding of protein N-terminal biology as well as outlining present enrichment strategies for mass spectrometry-based studies of protein N-termini.
authors.affiliation: Institute of Molecular Medicine and Cell Research, University of Freiburg, 79104 Freiburg, Germany.
authors.forename: Zon W
authors.initials: ZW
authors.lastname: Lai
authors.affiliation: BIOSS Centre for Biological Signaling Studies, University of Freiburg, 79104 Freiburg, Germany.
authors.forename: Agnese
authors.initials: A
authors.lastname: Petrera
authors.affiliation: Institute of Molecular Medicine and Cell Research, University of Freiburg, 79104 Freiburg, Germany; BIOSS Centre for Biological Signaling Studies, University of Freiburg, 79104 Freiburg, Germany. Electronic address: oliver.schilling@mol-med.uni-freiburg.de.
authors.forename: Oliver
authors.initials: O
authors.lastname: Schilling
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D006801:Humans; D013058:Mass Spectrometry / Q000379:methods*; D008969:Molecular Sequence Data; D011499:Protein Processing, Post-Translational; D011506:Proteins / Q000737:chemistry*; D020543:Proteome / Q000737:chemistry; D040901:Proteomics / Q000379:methods*
chemical_list: D011506:Proteins; D020543:Proteome