Similarly, the atl gene, coding for the bifunctional autolysin, important in primary attachment to glass and polystyrene surfaces [39] and reduced in intermediate glycopeptide resistant strains [40], was down-regulated by glucose in the wild-type strain. This is partially in contrast to previous findings, in which we observed a trend towards stronger buy LDN-193189 atl expression in glucose containing TSB medium in the wild-type in comparison to a ΔccpA mutant [23]. However, growth conditions and strains differed between these two studies. Table 5 Regulators and factors involved in virulence and/or resistance subject
to regulation by CcpA and glucose ID Producta wt mut N315 Newman common +/- b +/- b Glucose-dependent regulation by CcpA Down-regulated by glucose *SA0107 NWNM_0055 PF477736 spa immunoglobulin G binding Eltanexor manufacturer protein A precursor 0.2 1.1 SA0620 NWNM_0634 secretory antigen SsaA homologue 0.4 0.9 SA0841 NWNM_0851 similar to cell surface protein Map-w 0.4 0.9 SA0905 NWNM_0922 atl autolysin (N-acetylmuramyl-L-alanine amidase and endo-b-N-acetylglucosaminidase)
0.4 1.1 SA2353 NWNM_2466 similar to secretory antigen precursor SsaA 0.5 1.0 SA2356 NWNM_2469 isaA immunodominant antigen A 0.4 0.8 Up-regulated by glucose SA1010 NWNM_1076 similar to exotoxin 4 2.3 0.6 SA1700 NWNM_1822 vraR two-component response regulator 2.2 0.8 SA1701 NWNM_1823 vraS two-component sensor histidine kinase 2.5 0.7 SA1869 NWNM_1970 sigB sigma factor B 1.7 1.0 SA1870 NWNM_1971 rsbW anti-sigmaB factor 2.2 1.1 SA1871 NWNM_1972 rsbV anti-sigmaB factor antagonist 1.3 0.9 SA1872 NWNM_1973 rsbU sigmaB regulation protein RsbU 0.9 0.7 SA2290 NWNM_2397 fnbB fibronectin-binding protein
homologue 2.6 Ponatinib 0.9 *SA2329 NWNM_2440 cidA murein hydrolase regulator 3.5 1.4 a Cellular main roles are in accordance with the N315 annotation of the DOGAN website [26] and/or the KEGG website [27]. b Comparison of gene expression with (+) and without (-) glucose, genes with a +/- glucose ratio of ≤ 0.5 or ≥2 in the wild-type were considered to be regulated c Comparison of gene expression of wild-type (wt) and ΔccpA mutant (mut) at OD600 1 (T0) and 30 min later (T30). genes with a wt/mut ratio of ≤ 0.5 or ≥2 were considered to be regulated. * Genes containing putative cre-sites The genes coding for the two-component-system VraSR were found to be up-regulated by glucose in a CcpA-dependent manner. This system was reported to regulate the so-called cell wall stress stimulon, a set of genes that is induced in the presence of cell wall damaging agents [41]. Indeed, some of the genes, which were reported to belong to the cell wall stress stimulon of strain Newman [42] were found to be regulated by glucose in a CcpA-dependent manner as well.