Salinity shifts characterize a boundary which is one of the most

Salinity shifts characterize a boundary which is one of the most difficult barriers to cross for organisms in all

three domains of life [43]. While mechanisms to cope with high salt concentrations are relatively well studied in prokaryotes, they are still largely unknown in protists (with the exception of the model algae Dunaliella salina[44]). While there is evidence that many protists have narrow ranges of salt tolerance [45, 46], some taxa are known to occur under a wide range of salinities, from freshwater to hypersaline [47]. One example is the ciliate Cyclidium glaucoma[48], which may explain the occurrence IAP inhibitor of some of the same phylotypes in haloclines and brines of specific DHABs. Other examples are likely to exist. In contrast, adaptations to anoxia in GANT61 chemical structure Ciliates are well known. Ciliates are one of the most successful eukaryotic taxon groups in hypoxic and anoxic habitats. In their long evolutionary history, they have acquired several strategies that allow for an anaerobic lifestyle, including hydrogenosomes [49, 50], anaerobic mitochondria [51], and/or symbiotic

networks [52, 53]. The high taxonomic diversity of anaerobe ciliates includes taxa such as Nyctotherus, Loxodes, Pleuronema, Strombidium, Trimyema, Cyclidium and Metopus, some of which were also detected in our genetic diversity survey. Electron microscopy and fluorescence in situ hybridization assays provide unbiased evidence that the genetic signatures we detected in our rRNA-targeted gene survey can be assigned to ciliates living

in the selleck screening library DHABs rather than reflecting ancient nucleic acids. (Figure 5, [25, 54]). Taking advantage of phylotypes that we detected exclusively in specific habitats and phylotypes that can be found in several habitats with distinct hydrochemical CYTH4 characteristics, we may assume that the latter have a character of more generalist taxa compared to the more locally restricted phylotypes. The total number of observed taxon groups is 102 distributed over eight different datasets (samples or habitats) (Additional file 1: Figure S1). In those eight samples there are 13 generalist taxonomic groups that appeared simultaneously in at least six of the datasets. Only four taxonomic groups appeared in all of the eight datasets. Specialists, i.e. taxa that are restricted to a single unique habitat account for 34 different taxonomic groups. This results in a specialist/generalist ratio of 8.5 to 1, indicating a high specialization of taxa in the habitats under study. However, there is a limitation to infer the autecology of specific evolutionary lineages based on sequence data and microscopy evidence [25]. We do not make any attempt to explain the presence or absence of specific phylotypes in individual samples, and we instead focus only on community level ciliate diversity.

As shown in Figure 3 (lanes 2 and 6), nitrate-dependent NorC expr

As shown in Figure 3 (lanes 2 and 6), nitrate-dependent NorC expression decreased Fludarabine under selleck kinase inhibitor anoxic conditions compared with cells incubated with an initial O2 concentration of 2%. As observed for NorC, the expression of FixP and FixO was weak in the membranes from the anoxically incubated cells in the presence of nitrate (Figure 4, lanes 2 and 6). Figure 4 Expression of E. meliloti 1021 napA , nirK , norC and nosZ denitrification genes in cells

incubated for 12 h in MM or MMN under an initial oxygen concentration of 2% or under anoxic conditions. The transcription levels were quantified using qRT-PCR with total RNA samples as the templates. The data were analysed using the standard curve method (nirK data were analysed with the comparative CT method), and the expression levels were normalised against the E. meliloti smc00128 gene as an internal standard. The values expressed relative

to the values of cells incubated under 2% initial O2 in the absence of nitrate are the means and standard deviations of three independent experiments run in triplicate. Expression of E. meliloti denitrification genes We analysed the expression of the E. meliloti napA, nirK, norC and nosZ genes using qRT-PCR analyses. With the exception of nirK expression, which was induced 36-fold by nitrate, the presence of nitrate in the growth medium of cells incubated under an initial O2 concentration of 2% provoked the induction of napA, norC and nosZ expression by 1.5-, 3.6- and 4.2-fold, respectively, compared with the expression observed in the absence ADAM7 of nitrate (Figure 4). When the cells were incubated anoxically from the beginning of culture, the napA, nirK, norC and nosZ genes were induced approximately 4-, 48-, 84- and 32-fold by

nitrate compared with the expression levels observed after a 12 h incubation in MM at an initial O2 concentration of 2% (Figure 4). These results indicate that the maximal expression of the E. meliloti napA, nirK, norC and nosZ denitrification genes occurs when the cells are initially incubated anoxically and when nitrate is present in the growth medium. Discussion E. meliloti has been considered a partial denitrifier because of its traditionally reported inability to use nitrate as an electron acceptor for ATP generation and growth under anoxic conditions [18, 33]. Recent results from our group confirmed the inability of E. meliloti to grow via nitrate respiration when cells were initially incubated under anoxic conditions [21]; however, E. meliloti 1021 was able to use nitrate as a respiratory substrate when cells were initially incubated with 2% O2 in the headspace [21]. Under these conditions, O2 was consumed after 6 h of incubation, as we demonstrated in the present manuscript. In this work, we demonstrated that E. meliloti nap genes are involved in E.

Nanoscale Res Lett 2014,9(1):95

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ZnO nanobelt based field effect transistors (FETs). J Nanosci Nanotechnol 2009,9(10):5745–5751.CrossRef 40. Chen YW, Liu YC, Lu SX, Xu CS, Shao CL, Wang C, Zhang JY, Lu YM, Shen DZ, Fan XW: Optical properties of ZnO and ZnO:In nanorods assembled by sol–gel method. J Chem Phys 2005,123(13):134701.CrossRef 41. Ahmad M, Sun H, Zhu J: Enhanced photoluminescence and field-emission behavior of vertically well aligned arrays of AZD2171 In-doped ZnO nanowires. ACS Appl Mater Interfaces 2011,3(4):1299–1305.CrossRef 42. Guo M, Diao P, Cai S: Hydrothermal growth of well-aligned ZnO nanorod arrays: dependence of morphology and alignment ordering upon preparing conditions. J Solid State Chem 2005,178(6):1864–1873.CrossRef 43. Mahmood K, Park SB, Sung HJ: Enhanced photoluminescence, Raman spectra DOCK10 and field-emission behavior of indium-doped ZnO nanostructures. J Mater Chem C 2013,1(18):3138–3149.CrossRef 44. Li X, Cai W, An J, Kim S, Nah J, Yang D, Piner R, Velamakanni A, Jung I, Tutuc E, Banerjee SK, Colombo L, Ruoff RS: Large-area synthesis of high-quality and uniform graphene films on copper foils. Science 2009, 324:1312–1314.CrossRef Competing interests The authors declare that they have no competing interests. Authors’ contributions NSAA designed and performed the experiments; participated in the characterization and data analysis of FESEM, EDX, XRD, and PL; and prepared the manuscript. NIR participated in the data analysis and preparation of the manuscript. MRM participated in the PL characterization.

J Bacteriol 191:7109–7120CrossRefPubMed Li YF, Zhou W, Blankenshi

J Bacteriol 191:7109–7120CrossRefPubMed Li YF, Zhou W, Blankenship RE, Allen JP (1997) Crystal structure of the of the bacteriochlorophyll a protein from Chlorobium tepidum. J CHIR98014 purchase Mol Biol 271:456–471CrossRefPubMed Li H, Frigaard NU, Bryant D (2006) Moleculear contacts for chlorosome proteins revealed by cross-linking studies with clorosomes from Chlorobium tepidum. Biochemistry 45:9095–9103CrossRefPubMed Lin S, Van Amerongen H, Struve WS (1991)

Luminespib Ultrafast pump-probe spectroscopy of bacteriochlorophyll c antennae in bacteriochlorophyll a-containing chlorosomes from the green photosynthetic bacterium Chloroflexus aurantiacus. Biochim Biophys Acta 1060:13–24CrossRef Linnanto JM, Korppi-Tommola JEI (2008) Investigation on chlorosomal antenna geometries: tube, lamella and spiral-type self-aggregates. Photosynth Res 96:227–245CrossRefPubMed Ma YZ, Cox RP, Gillbro T, Miller M (1996) Bacteriochlorophyll organization and energy transfer kinetics in chlorosomes from Chloroflexus aurantiacus depend on the light regime during growth. Photosynth Res 47:157–165CrossRef Manske AK, Glaeser J, Kuypers MAM, Overmann J (2005) Physiology and phylogeny of green sulfur bacteria forming a monospecific phototrophic assemblage at a depth of 100 meters in the Black Sea. Appl Environ

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In women, the synergistic

In women, the synergistic effect was maintained, but

attenuated to some extent when the level of job demands was high. In men, an antagonistic effect between job control and social support at work was observed when the level of job demands was high. Comparisons with other studies To our learn more knowledge, this is one of the few studies explicitly testing and reporting a synergistic interaction between job control and social support at work on common mental disorders in a large male and female working population from diverse occupations and industries. This study was consistent with the previous study (Sanne et al. 2005a) in that a synergistic effect was found between job control and social support at work on common mental disorders, and the synergistic effect was found in female TPCA-1 workers, regardless of the level of job demands. However, this study is in contrast with the Norwegian study (Sanne et al. 2005a) in terms of the direction of the impact of job demands on the synergistic effect. In this study, the synergistic effect was found in male workers only when the level of job demands was low, but it was found only when the

level of job demands was high in the Norwegian study (Sanne et al. 2005a). In this study, selleck chemicals llc the synergistic effect was stronger in female workers when the level of job demands was low, but it was stronger oppositely when the level of job demands was high in the Norwegian study (Sanne et al. 2005a). These patterns indicate that if any, a synergistic interaction effect between job control and social support at work on common mental disorders might vary by the level

of job demands, gender, and study context (eg. in a Swedish economic crisis for this study). The minor impact of “high” job demands on the synergistic effect in female workers might be explained by the fact that during the follow-up period of this study cohort, on average, job demands of female workers did not change much, while job control and social support at work were deteriorated significantly. Under this situation, the critical factors for mental health of female workers would be resources rather than the level of job demands. The antagonistic interaction between job control and social support at work in male workers under high job demands was an unexpected finding. This may suggest that high social support at work could be a stressor rather than a stress reducer under a special circumstance (House 1981; Karasek et al. 1982; Vanroelen et al. 2009; Westman et al. 1985), for instance, when a worker in a team with strong internal solidarity is pressured to provide the same or perhaps increased level of socio-emotional social support to other coworkers given his/her significant job changes (eg. increased job strain). In fact, on average, job control and job demands of male workers were deteriorated (i.e., increased job strain) during the follow-up, while social support at work did not change much.

The site of bleeding is

The site of bleeding is visualized and identified on the image monitor. While the patient is still under the gamma camera, a small 10 millimeter diameter cobalt-57 marker is placed directly on the patient’s skin over the identified bleeding site (using the image monitor for guidance). The radioactive source should be placed immediately when extravasation is identified either during the early flow phase of the study or the subsequent five minute static images depending on rate of bleeding. Fedratinib supplier The skin

is then marked in this location using a permanent ink marker. A metal object (2 inch paper clip) is then placed over the localized bleeding site in order to identify the site during angiography. During the subsequent arteriogram the arterial supply to the bleeding site was MAPK Inhibitor Library price easily localized if actively bleeding. However, when extravasations were not visualized on the arteriogram, the arterial supply was unique to the extravasations site and empiric embolization could be considered. Embolization technique Superselection of the artery supplying the area of hemorrhage was performed using a 3-French microcatheter

(Renegade, Boston Scientific, Natick, MA). This catheter was advanced coaxially to the bleeding site (marked by the clip) through the indwelling 4 or 5-French catheter. Attempts were made to position the

catheter as close to the bleeding site as possible. Depending on the anatomy the catheter was either advanced through the superior mesenteric artery or inferior mesenteric artery distal branch (i.e. distal middle colic artery marginal artery). Embolization was then performed using 2.0–2.5 cc of 500–700 micron particles either Polyvinyl alcohol (Contour, Boston Scientific, Natick, Massachusetts, USA), Embospheres (Biosphere Medical, Rockland, Massachusetts, USA), or Bead Block Compressible Microspheres (Terumo Medical Systems (Tokyo, Japan). 2.0–2.5 cc of particles were used for each branch whether the bleeding site was angiographically visible or not with the goal of occluding the distal branch of the artery (marginal artery and vasa recta) close to the bleeding site. HDAC activation Results (See Progesterone Table 1) Summary of Results Summary of Results Patient # Age/Sex Nuclear Medicine Source of Bleeding Transfusion Requirment (Packed Red Cells Units) Hgb level prior to transfusion g/dl Time between marker placement and angiography Angiographically positive Hemostasis after embolization Etiology of bleeding 1 70/M Hepatic Flexure of Colon 5 11.4 < 2 hours Yes Yes Diverticulosis 2 84/F Hepatic Flexure of Colon 5 5.4 < 2 hours No Yes Suspected diverticulosis 3 65/F Splenic Flexure of Colon 5 7 < 2 hours No Yes Unknown 4 55/F Splenic Flexure of Colon 12 7.

The frozen samples were kept and stored in a 2-ml tube containing

The frozen samples were kept and stored in a 2-ml tube containing liquid nitrogen before cryosubstitution was carried out. The frozen sample was transferred to a microfuge tube containing 2% (wt/vol) osmium tetroxide in acetone and cryosubstituted in a Leica AFS. The sample was warmed from -160°C to -85°C over 1.9 h (rate 40°C/h), Quisinostat cost held at -85°C for 36 h, then warmed from -85°C to

20°C over 11 h (4°C/h). The high-pressure frozen and cryosubstituted samples were then processed into EPON resin and ultrathin-sectioned using a Leica Ultracut Ultramicrotome UC61. The cut sections were placed onto a formvar-coated copper grid and stained with 5% (wt/vol) uranyl acetate in 50% ethanol and with lead citrate. Freeze fracture Verrucomicrobium spinosum cells were swabbed off a plate and resuspended in 20% (vol/vol) glycerol for 1 hr. After rapid freezing, cells were freeze-fractured using a Balzers BAF 300 Unit. Fracturing was performed at -120°C, and

3 nm of platinum/carbon was shadowed onto the samples at an angle of this website 45°. A 25 nm layer of carbon was then evaporated on top of this. Samples were taken from the freeze fracture unit and thawed. The replicas were cleaned in 25% chromic acid for 3 days, rinsed 3 times in distilled water and picked up onto 200 mesh copper grids. Immunolabelling of double-stranded DNA Ultrathin-sections of high-pressure frozen and cryosubstituted V. spinosum and P. dejongeii cells on carbon-coated

copper grids were floated onto drops of Block solution containing 0.2% (wt/vol) fish skin gelatin, 0.2% (wt/vol) BSA, 200 mM glycine and 1 × PBS on a sheet of Parafilm, and treated for 1 min at 150 W in a Biowave microwave oven. The grids were then transferred onto 8 μl of primary antibody, (mouse monoclonal IgG anti-double-stranded DNA (abcam) diluted 1:500 in Block solution), and treated in the microwave at 150 W, for 2 min with microwave on, 2 min off, and 2 min on. The grids GPX6 were then washed on drops of Block solution 3 times, and treated each time for 1 min in the microwave at 150 W, before being placed on 8 μl of goat anti-mouse IgG 10 nm-colloidal gold antibody (ProSciTech) diluted 1:50 in Block solution and treated in the microwave at 150 W, for 2 min with microwave on, 2 min off, and 2 min on. Grids were washed 3 times in 1 × PBS, each time being treated for 1 min each in the microwave at 150 W, and 4 times in water for 1 min each in the microwave at 150 W. The grids were dried and stained with 1% (wt/vol) aqueous uranyl acetate. Three negative controls were carried out for this experiment. Firstly, anti-GFP antibody, an antibody which targeted an antigen not expected to occur in Verrucomicrobia, was used as the primary antibody. Secondly, the block solution with no antibody of any type was used in place of the primary antibody.

Conidia (3 0–)3 2–3 8(–4 7) × (2 2–)2 3–2 5(–2 7) μm, l/w (1 2–)1

Conidia (3.0–)3.2–3.8(–4.7) × (2.2–)2.3–2.5(–2.7) μm, l/w (1.2–)1.3–1.6(–2) (n = 68), (yellow-)green, ellipsoidal or oblong, often attenuated towards the base, smooth, with few minute guttules, scar indistinct. At 35°C hyphae narrower than at lower temperatures; MK-4827 Conidiation in distinct concentric zones of green to black dots. Conidiophores arising in bundles to 1 mm diam;

conidia formed in heads to 0.4 mm diam. On PDA after 72 h 15–16 mm at 15°C, 38–40 mm at 25°C, 46–48 mm at 30°C, 38–41 mm at 35°C; mycelium covering the plate after 6–7 days at 25°C. Colony first hyaline, dense, becoming concentrically zonate; zones and margin thick, convex, densely hairy to cottony; numerous red crystals to ca 150 μm diam appearing in the agar; green, 27D5-6, 27F7-8, later black dots appearing in the centre and in the concentric CB-5083 zones, confluent to spots 2.5 mm long. Aerial hyphae numerous, several mm high, forming strands. Autolytic excretions lacking or rare at lower temperatures, abundant at 35°C, no coilings seen. Reverse exhibiting varying colours, olive, 1E5–6, yellowish, 3B4, and grey- to brown-red,

8BC5-6; conidiation zones on the reverse finally yellow- to orange-brown, 5CD5–6. No distinct odour noted. Conidiation noted after 1–2 days at 25–35°C, green after 2–3 days; appearing as numerous, mostly unbranched, short selleck inhibitor gliocladium-like ‘brushes’ around the plug; conidial heads to ca 0.3 mm diam, wet or dry, green, confluent. Red crystals formed at all temperatures; gliocladium-like conidiophores spreading across entire plate at 15°C. At 30°C conidiation in several concentric zones; zones flat; crystals dissolving in the agar with time. Conidiation abundant, green, 27EF7–8, conidial heads

confluent early. Reverse brown-orange, 7C5–6, below concentric zones. At 35°C colony with fine farinose green zones. Conidiation abundant; conidial heads small. Autolytic excretions abundant, yellowish. Centre on the reverse yellowish, Terminal deoxynucleotidyl transferase 1-3AB4-5. On SNA after 72 h 15–16 mm at 15°C, 44–47 mm at 25°C, 54–57 mm at 30°C, 32–36 mm at 35°C; mycelium covering the plate after 4–5 days at 25°C. Colony as on CMD; but hyphae degenerating soon, appearing empty. Autolytic excretions lacking or rare at lower temperatures, abundant at 35°C, coilings lacking or moderate. No diffusing pigment, no distinct odour noted. Chlamydospores noted after 1–2 days, abundant at all temperatures, distinctly more abundant than on CMD, mostly terminal, also intercalary, (4–)6–10(–12) × (3.5–)5–9(–12) μm, l/w (0.9–)1.0–1.2(–1.5) (n = 70), (sub-)globose, less commonly ellipsoidal or fusoid, smooth. Conidiation noted after 2–3 days at 25–35°C, green after 3–4 days.

Current microbiology 2009,59(3):248–255 PubMedCrossRef 52 Aranda

Current microbiology 2009,59(3):248–255.PubMedCrossRef 52. Aranda J, Cortes P, 3-Methyladenine ic50 Garrido ME, Fittipaldi N, Llagostera M, Gottschalk M, Barbe J: Contribution of the FeoB transporter to Streptococcus suis virulence. Int Microbiol 2009,12(2):137–143.PubMed 53. Hu Q, Liu P, Yu Z,

Zhao G, Li J, Teng L, Zhou M, Bei W, Chen H, Jin M: Identification of a cell wall-associated subtilisin-like serine protease involved in the pathogenesis of Streptococcus suis serotype 2. Microb Pathog 2009. 54. Ferrando LM, Fuentes S, de Greeff A, Smith H, Wells JM: ApuA a Multifunctional alpha-Glucan-degrading Enzyme SB-715992 manufacturer of Streptococcus suis Mediates Adhesion to Porcine Epithelium and Mucus. Microbiology 55. Aranda J, Garrido ME, Fittipaldi N, Cortes P, Llagostera M, Gottschalk M, Barbe J: The cation-uptake regulators AdcR and Fur are necessary for full virulence of Streptococcus suis . Vet Microbiol 144(1–2):246–249. 56. Quessy S, Dubreuil JD, Caya M, Higgins R: Discrimination of virulent and avirulent Streptococcus

suis capsular type 2 isolates from different geographical origins. Infect Immun 1995,63(5):1975–1979.PubMed Authors’ contributions AG carried out the molecular experiments, data analyses and drafted the manuscript. HJW collected the S. suis isolates and participated in the experimental infection. FMB performed statistical analysis of clustering Entinostat molecular weight methods. CS collected the Vietnamese isolates and helped to draft the manuscript. CGB collected and analyzed German isolates and helped to draft the manuscript. HNT analyzed the Vietnamese isolates. PAK6 NSZ performed the experimental

infections. HES initiated and coordinated the work described and helped to draft the manuscript. All authors read and approved the final manuscript.”
“Background West Nile virus (WNV) is the etiological agent of West Nile fever (WNF), an important mosquito-borne disease widely prevalent in Africa, Europe, Russia, the Middle East, India, Australia and also in North America since 1999 [1]. WNV has expanded its geographic range since the first identification of WNV cases in the United States in 1999, and only in 2010, 981 human cases of WNF were reported in the United States [2]. WNV is serologically classified into the Japanese encephalitis virus (JEV) serocomplex, including JEV, Saint-Louis encephalitis virus (SLEV), Murray Valley fever virus (MVEV) and Kunjin virus, all of which are responsible for severe encephalitis in humans and related animals [3, 4]. The 10.7-kilobase genome of WNV encodes a single polyprotein, which is cleaved into three structural proteins (C, prM/M, and E) and seven nonstructural proteins (NS1, NS2A, NS2B, NS3, NS4A, NS4B and NS5) by both virus- and host-encoded proteases. The seven nonstructural proteins (glycoprotein NS1 and NS2A, protease cofactor NS2B, protease and helicase NS3, NS4A, NS4B and the polymerase NS5) associate with viral RNA to form the replication complex [5]. NS1 is a 48-Kd glycoprotein containing 12 invariant cysteine residues.

Therefore, genomic DNA of M fortuitum 10851/03 was digested with

Therefore, genomic DNA of M. fortuitum 10851/03 was digested with NcoI. The DNA fragments were circularised by ligation. Then a PCR was performed using the reverse primers porM2-rev-1 and porM2-rev-2 (Table 1) and the product was sequenced to obtain a complete sequence of porM2 and its flanking regions. The primers porM2-fw-hind (located 268 bp upstream of the porM2 coding sequence [CDS]) and porM2-bw-hpa (located directly downstream of the porM2 cds) (Table 1) were derived from the sequence mentioned and were chosen AG-881 purchase to amplify and clone porM2 and its regulatory sequences. The 918 bp product was cloned into the HindIII/HpaI restriction sites of the integrative

mycobacterial vector pMV306 [40] and the shuttle vector pMV261 [40] to PRIMA-1MET cell line generate the recombinant plasmids pSRa104 and pSRb103, respectively. Positive clones were verified by sequencing. PorM2 was detected in other strains using the primer pairs porM2-fw-hind and porM2-bw-hpa buy 3-Methyladenine or porM2-rna-fw and porM2-rna-bw (Table 1). Detection of porins by Western Blot and 2-D Electrophoresis M. smegmatis MspA as well as porins from M. fortuitum were extracted in PBS buffer supplemented with 0.5% (w/v) n-octylpolyoxyethylene (nOPOE, Bachem, Heidelberg) and 0.2% EDTA (POP05), slightly modifying the method

of Heinz and Niederweis [12]. Mycobacteria were grown to an OD600 of up to 1. Subsequently, about 150 mg of mycobacteria (wet weight) were washed twice in PBS buffer supplemented with 0.2% EDTA. Pellets were resuspended in POP05 using a ratio of 200 μl POP05 per 100 mg mycobacteria and were incubated at 100°C for 30 min. Afterwards, cell debris was sedimented by centrifugation at 27,000 × g and 4°C and the supernatant Pregnenolone was transferred to a new tube. Quantification of protein samples was carried out using the BCA Protein Assay Reagent Kit (Pierce, Rockford, IL, USA). Western Blot analysis was performed using the antiserum pAK MspA#813 as described previously [13]. For 2D-analysis, about 75 μg

of protein was precipitated by acetone and pellets were washed with 70% acetone to desalt the sample. Afterwards pellets were resuspended in 200 μl Rehydration solution (8 M Urea, 0.5% CHAPS, 0.2% DTT, 0.5% Pharmalyte, 0.002% Bromphenol blue), incubated for 5 h at room temperature and loaded on IPG strips pH 3–5.6 NL, 11 cm (GE Healthcare). The strips were focused on an Ettan pIGphorII unit and the second dimension was run on vertical 10% SDS-PAGE gels using the Ettan Daltsix electrophoresis unit (GE Healthcare) according to the manufacturer’s instructions. The gels were silver-stained using Roti-Black P (Carl Roth GmbH, Karlsruhe, Germany). The porin was detected by Western Blotting as mentioned above. Differential expression analysis of porins by qRT-PCR and ELISA Expression of porin genes in the different strains was determined by means of qRT-PCR using the Mx3000P™ Real-time PCR System (Stratagene, La Jolla, CA, USA) or the StepOnePlus™ Real-Time PCR-System (Applied Biosystems).