Lichtenecker RJ, Weinhäupl K, Schmid W, Konrat R. α-Ketoacids as precursors for phenylalanine and tyrosine labelling in cell-based protein overexpression.
J Biomol NMR 2013;
57:205-9. [PMID:
24264768 DOI:
10.1007/s10858-013-9786-y]
[Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Accepted: 09/20/2013] [Indexed: 05/21/2023]
Abstract
(13)C-α-ketoacid metabolic precursors of phenylalanine and tyrosine effectively enter the metabolism of a protein overexpressing E. coli strain to label Phe- and Tyr-residues devoid of any cross-labelling. The methodology gives access to highly selective labelling patterns as valuable tools in protein NMR spectroscopy without the need of (15)N-chiral amino acid synthesis using organic chemistry.
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