11.0 in Python 2.7.3.
Acknowledgments We thank Jun Wheeler for MALDI mass spectrometry fingerprinting analysis of recombinant proteins; Mark Donahue for assistance with data analysis; Hayley Angove and Wendy Savory for assistance with development of the MK5108 datasheet FRET-based assay and sortase protein expression, respectively. We thank Neil Fairweather, Johann Peltier, Helen A. Shaw and Madeleine Moule for critical reading of the manuscript. Funding This research was supported by funding from Wellcome Trust grant number 086418/Z/ and MRC grant number 499 94717. Additional files Additional file 1: Figure S1. RT-PCR analysis in C. difficile strain 630 of CD2718 and its predicted substrates. PCR reactions were performed with 630 cDNA that was prepared from cultures grown to early exponential (E), late exponential (L) and stationary phase (S). M = Hyperladder I (Bioline), G = 630 genomic DNA, W = dH2O. A “+“indicates cDNA reaction with added reverse transcriptase, “-“ indicates cDNA reaction without added reverse transcriptase (control for DNA depletion of RNA sample). Additional file 2: Table S1. Primers used for RT-PCR analysis. References 1. Mazmanian SK, Ton-That H, Schneewind O: Sortase-catalysed anchoring of surface proteins to the cell wall of Staphylococcus aureus . Mol selleck inhibitor PFT�� Microbiol 2001, 40(5):1049–1057. 2. Ton-That H, Faull KF, Schneewind O: Anchor
structure of staphylococcal surface proteins. A branched peptide that links the carboxyl terminus of proteins to the cell wall. J Biol Chem 1997, 272(35):22285–22292.PubMedCrossRef 3. Ton-That H, Mazmanian SK, Alksne L, Schneewind O: Anchoring of surface proteins to the cell wall of Staphylococcus aureus . Cysteine 184 and histidine 120 of sortase form a thiolate-imidazolium ion pair for catalysis. J Biol Chem 2002, 277(9):7447–7452. 4. Ton-That H, Mazmanian SK, Faull KF, Schneewind O: Anchoring of surface proteins to the cell wall of Staphylococcus aureus . Sortase
catalyzed in vitro transpeptidation reaction using LPXTG peptide and NH(2)-Gly(3) substrates. J Biol Chem 2000, 275(13):9876–9881. 5. Perry AM, Ton-That H, Mazmanian SK, Schneewind O: Anchoring of surface proteins to the cell wall of Staphylococcus aureus. III. Lipid II Suplatast tosilate is an in vivo peptidoglycan substrate for sortase-catalyzed surface protein anchoring. J Biol Chem 2002, 277(18):16241–16248. 6. Ruzin A, Severin A, Ritacco F, Tabei K, Singh G, Bradford PA, Siegel MM, Projan SJ, Shlaes DM: Further evidence that a cell wall precursor [C(55)-MurNAc-(peptide)-GlcNAc] serves as an acceptor in a sorting reaction. J Bacteriol 2002, 184(8):2141–2147.PubMedCentralPubMedCrossRef 7. Spirig T, Weiner EM, Clubb RT: Sortase enzymes in Gram-positive bacteria. Mol Microbiol 2011, 82:1044–1059.PubMedCentralPubMedCrossRef 8. Mazmanian SK, Liu G, Jensen ER, Lenoy E, Schneewind O: Staphylococcus aureus sortase mutants defective in the display of surface proteins and in the pathogenesis of animal infections.
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