title: Lipid modification of proteins through sortase-catalyzed transpeptidation.
abstract: A general chemoenzymatic method for the site-specific attachment of lipids to protein substrates is described. Sortase A is used to append short lipid-modified oligoglycine peptides to the C terminus of protein substrates bearing a five amino acid sortase A recognition sequence (LPETG). We demonstrate the attachment of a range of hydrophobic modifications in excellent yield (60-90%), including a simple step for removing the sortase enzyme postreaction. Lipoproteins prepared using these procedures were subsequently shown to associate with mammalian cells in a lipid tail-dependent fashion and localized to the plasma membrane and endosomes.
authors.affiliation: Whitehead Institute for Biomedical Research, 9 Cambridge Center, Cambridge, Massachusetts 02142, USA.
authors.forename: John M
authors.initials: JM
authors.lastname: Antos
authors.forename: Gwenn M
authors.initials: GM
authors.lastname: Miller
authors.forename: Gijsbert M
authors.initials: GM
authors.lastname: Grotenbreg
authors.forename: Hidde L
authors.initials: HL
authors.lastname: Ploegh
mesh_terms: D019881:Aminoacyltransferases / Q000737:chemistry* / Q000378:metabolism*; D001426:Bacterial Proteins / Q000737:chemistry* / Q000378:metabolism*; D002384:Catalysis; D045744:Cell Line, Tumor; D003546:Cysteine Endopeptidases / Q000737:chemistry* / Q000378:metabolism*; D005998:Glycine / Q000737:chemistry / Q000378:metabolism; D006801:Humans; D050356:Lipid Metabolism; D008055:Lipids / Q000737:chemistry*; D015394:Molecular Structure; D010455:Peptides / Q000737:chemistry* / Q000378:metabolism*; D013379:Substrate Specificity
chemical_list: D001426:Bacterial Proteins; D008055:Lipids; D010455:Peptides; D019881:Aminoacyltransferases; C120542:sortase A; D003546:Cysteine Endopeptidases; D005998:Glycine