Thus, we examined the cell adhesion activity of a phosphocholine-

Thus, we examined the cell adhesion activity of a phosphocholine-deficient S.

pneumoniae mutant (Fig. 5). The adherence of the phosphocholine-deficient mutant was slightly upregulated by RSV infection compared to the parent strain R6. The upregulation by RSV infection in R6 was significantly suppressed in the presence of fosfomycin, whereas the adhesion of the mutant to A549 cells was not significantly altered by fosfomycin treatment. These results indicated that fosfomycin suppressed S. pneumoniae and H. influenzae adhesion in a PAF receptor-dependent manner via bacterial phosphocholine. Several clinical isolates of S. pneumoniae and H. influenzae were also assessed. Similar RSV-induced bacterial adhesion and significant suppression by fosfomycin, as well as PAF receptor antagonist occurred (Fig. Linsitinib 6). Furthermore, both strains of RSV, Long and A2, yielded comparable results for upregulation of the PAF receptor and the inhibitory effect of fosfomycin on PAF receptor induction (data not shown). These lines of evidence confirm that the expression of the PAF receptor is induced by RSV infection and indicate that this

induction is suppressed by fosfomycin treatment. Recently, we reported that fosfomycin suppressed the RSV-induced production of chemokines, such as interleukin-8 (IL-8) and ‘regulated on activation, normal click here T-cell expressed and secreted’ (RANTES), in the respiratory epithelial cell line A549, but that it did not affect virus replication (Okabayashi et al., 2009). The suppression of chemokine induction by RSV is due to the downregulation of NF-κB activation (Okabayashi HSP90 et al., 2009). Yoneshima et al. (2003) also reported the suppression of NF-κB activation by fosfomycin in the human monocytic cell line U937 and in the T-cell line Jurkat stimulated with Gram-negative bacterial lipopolysaccharides. The PAF receptor is a receptor for S. pneumoniae and H. influenzae (Cundell et al., 1995; Swords et al., 2000). Transcription of the PAF receptor gene is controlled by NF-κB (Mutoh et al.,

1994; Shimizu & Mutoh, 1997). Ishizuka et al. (2001) showed that the specific NF-κB inhibitor PDTC suppressed acid-induced S. pneumoniae adhesion to A549 cells via the suppression of PAF receptor induction. Hence, the suppression of PAF receptor expression by fosfomycin seems to be due to the suppression of NF-κB activation. Respiratory viruses, including RSV, induce PAF receptors and bacterial adhesion via it (Ishizuka et al., 2003; Avadhanula et al., 2006). In the present study, we showed that fosfomycin suppressed S. pneumoniae and H. influenzae adhesion to RSV-infected A549 cells. The bacterial adhesion was suppressed by the PAF antagonist and the anti-PAF receptor antibody. On the other hand, the phosphocholine-deficient S. pneumoniae mutant did not show RSV-induced adhesion, which was suppressed by fosfomycin.

, 2008) In this way

the number of GABAARs at the synapse

, 2008). In this way

the number of GABAARs at the synapse can be modulated without altering the number of receptors at the cell surface (Jacob et al., 2005; Thomas et al., 2005), providing a mechanism for rapid changes in the efficacy of synaptic transmission. Clearly, GABAARs are ‘trapped’ and stabilised by synapses, probably by interactions with proteins in the postsynaptic density and/or synaptic cleft. The refinement of this process at individual synapses to ensure the clustering of specific receptor subtypes appears not to involve the intracellular binding partners so far identified, as most exhibit little or no α-subunit specificity. Another important aspect of GABAAR regulation at the neuronal cell surface relates this website to the overall levels of expression of these receptors and thus their availability for recruitment to specific synapses. The number of GABAARs at the cell surface is determined by their rate of insertion into the plasma membrane following their synthesis and assembly within the ER, their maturation within the Golgi

apparatus, and their rate of removal from the plasma membrane by endocytosis (Arancibia-Carcamo & Kittler, 2009). What remains unclear is whether newly synthesized receptors are inserted directly into the postsynaptic membrane, or only following lateral diffusion from extrasynaptic sites. A number of proteins associated with GABAARs have been implicated in the maturation of GABAARs following their synthesis through the secretory pathways. Within the ER, newly synthesised GABAARs check details associate with the chaperone proteins BiP (immunoglobulin binding protein) and calnexin (Connolly et al., 1996b), which

may provide important quality control, or with PLIC-1 (a ubiquitin-like protein; Bedford et al., 2001). PLIC-1 was demonstrated to interact directly with all GABAARs and subunits, stabilizing receptor assemblies and protecting ioxilan them from proteosome-dependent degradation. In addition, the interaction with PLIC-1 promotes the insertion of GABAARs into the plasma membrane (Saliba et al., 2008). Another GABAAR-associated protein that is implicated in the maturation of newly synthesised receptors within the Golgi apparatus is BIG2 (brefeldin A-inhibited GDP/GTP exchange factor 2), which directly associates with β-subunits and co-localizes with GABAARs within the trans-Golgi network (Charych et al., 2004). Again, despite the identification of a growing number of proteins that influence the insertion of GABAARs into the plasma membrane, no well-characterised mechanisms that differentiate between synaptic and extrasynaptic insertion and none that can be predicted to distinguish between GABAAR subtypes have yet been identified.

We subsequently developed a paper-based survey for pharmacy-based

We subsequently developed a paper-based survey for pharmacy-based EC consumers to complete. The survey was reviewed for face and content validity by an expert panel of practising community pharmacists (n = 3), pharmacy academic and researchers

(n = 5) and a sexual health physician (n = 1). It was pilot tested on six female pharmacy students. The final survey was designed as a six-sided leaflet. All the details about the study, the participants’ voluntary involvement and an understanding that completion of the survey was taken as informed consent were clearly stated on the front cover of the leaflet. The first section focused on demographic and risk factors for chlamydia. There were free-text Z-VAD-FMK solubility dmso questions (for current age, post code and age at first intercourse) and tick-box questions for all other information. The second section of the survey evaluated their pharmacy experience during the EC consultation. These questions were presented as five-point Likert-type responses (with a central neutral response). The third section contained some facts about chlamydia

followed by a final polar yes/no question on whether they would accept a chlamydia test from the pharmacy. An invitation to participate, together with the pharmacy participation consent form, was sent to all registered pharmacies in Western Australia (WA): the Perth metropolitan region (n = 401) and rural, regional and remote WA (n = 112). Pharmacies that expressed learn more an interest, had a private consultation/screened area and conducted an average of eight or more EC requests per month were recruited. Pharmacists at these participating pharmacies were requested to issue the survey to all women after their EC consultation during the data-collection

period. Participation was voluntary and the pharmacist had been instructed not to assist them in filling in the survey. Women were encouraged to complete the survey, seal it in the paid envelope provided and leave it in the pharmacy. They also had the option of taking the survey home to complete at a more convenient time and post it directly to the research team. Pharmacies in the Perth metropolitan region distributed the survey to women requesting EC over a 6-week period between April and May 2009, while pharmacist in rural, regional and remote WA distributed the survey over a 6-month period between September PAK5 2009 and February 2010. Data were entered into a Microsoft Excel database and analysed using SPSS Statistics 20. Descriptive statistics were performed on all data. All continuous variables were analysed for normality and are reported as mean ± standard deviation for normally distributed data, and median (interquartile range; IQR) for non-normally distributed data. Comparison between all categorical variables was conducted using Pearson’s chi-square test. Significance was set at the 5% level. We found no clear definition of ‘inconsistent barrier contraception’ in the literature, so we created our own.

1), but even these regions are relatively small The three region

1), but even these regions are relatively small. The three regions contain many hypothetical and conserved hypothetical genes as well as genes encoding a number of σ factors, antibiotic biosynthetic clusters and other secondary metabolic genes, such as chitinases. Notwithstanding these gene similarities, there is no obvious evolutionary basis for gene conservation between these species and S. coelicolor in the 7 900 000–8 400 000-bp region of the latter’s chromosome to the MK-2206 mw right of the chromosomes in Fig. 1. Between the terminal

regions and the core region there are two other distinct regions, one to the left and one to the right of the core region. In Fig. 3, where the chromosomes

of Streptomyces are compared in a similar manner to those of the Actinomycetales in Fig. 1, it can be seen that these two regions are conserved, perhaps even to a higher degree than the core region, especially the one on the left. Originally these were suggested to be regions of the chromosome found only in members of the genus Streptomyces, based on the synteny of the core region with various Actinobacteria such as Mycobacterium and Corynebacterium. this website Those species show no or very limited morphological development and have very little gene similarity outside of the core region of the Streptomyces chromosome. However, when Fig. 3 is compared with Fig. 1 it is clear that the left and right regions between the terminal regions and the core region are distinct. The left regions, here termed the left Actinomycetales-specific region, seems to be more highly conserved Farnesyltransferase in the Streptomyces compared with the right region and this syntenous conservation is also present in many Actinomycetales to a significant degree. This contrasts with the right region, termed the right Streptomyces-specific region in Figs 1 and 3. This region is quite well conserved in Streptomyces, but is rather more poorly conserved in Actinomycetales. These regions are supported by Fig. 4, where the five regions are compared in terms of gene conservation using DNA/DNA

comparative microarray analysis against S. coelicolor across a number of Streptomyces and non-Streptomyces Actinomycetales species. The left terminal region shows the highest divergence across both Streptomyces and non-Streptomyces, in contrast to the left Actinomycetales-specific region, which shows consistently low divergence across all Actinomycetales. The core region shows higher divergence than the left Actinomycetales region, possibly due to the horizontally transferred regions that are present within this region (Jayapal et al., 2007). The right terminal region shows a trend towards higher divergence, although not to the same extent as the left terminal region, suggesting that the two terminal regions are quite distinct.

The resulting PCR amplicons consisted of two types, differing acc

The resulting PCR amplicons consisted of two types, differing according to size. Comparative sequence analysis and structural prediction of the flagellin amino acid sequences revealed the presence of numerous large gaps in the D2/D3

domains, which located in flagellum surface. Phylogenetic analysis using partial RG7422 supplier N-terminal flagellin sequences revealed that the Actinoplanes species grouped into three subclusters. The diversity of flagellin gene provides us useful information to discuss the evolution of motile actinomycetes. This study was supported in part by a research grant from the Institute for Fermentation, Osaka (IFO). “
“Saccharomyces cerevisiae was engineered for assembly of minicellulosomes by heterologous expression of a recombinant scaffolding protein from Clostridium cellulovorans and a chimeric endoglucanase E from Clostridium thermocellum. The chimeric endoglucanase E fused with the dockerin domain of endoglucanase B from C. cellulovorans

was assembled with the recombinant scaffolding protein. The resulting strain was able to ferment amorphous cellulose [carboxymethyl-cellulose (CMC)] into ethanol with the aid of β-glucosidase 1 produced from Saccharomycopsis fibuligera. The minicellulosomes assembled in vivo retained the synergistic effect for cellulose hydrolysis. The minicellulosomes containing the cellulose-binding domain were purified by crystalline cellulose affinity in a single learn more step. In the fermentation test at 10 g L−1 initial CMC, approximately 3.45 g L−1 ethanol was produced after 16 h. The yield (in grams of ethanol produced per substrate) was 0.34 g g−1 from CMC. This result indicates that a one-step processing of cellulosic biomass in a consolidated bioprocessing configuration is technically feasible by recombinant yeast cells expressing functional

minicellulosomes. Bioethanol is currently one of the most promising alternatives to conventional transport fuels because of its desirable characteristics, Megestrol Acetate such as high octane value and good combustion efficiency (Madhavan et al., 2009). Cellulosic materials of plant origin as a source of bioethanol production are the most abundant utilizable biomass resource. However, as alcohol production from cellulosic materials remains unfeasible economically, the development of a more effective and high-yield ethanol fermentation process is required to bring about a necessary dramatic reduction of production costs (Kondo et al., 2002). One-step conversion of lignocellulose to ethanol with an organism capable of cellulose degradation and efficient fermentation [consolidated bioprocessing (CBP)] would greatly enhance the cost effectiveness of bioethanol production (Lynd et al., 2005).

NHT-2 possessed a high degree of sequence homology with R gracia

NHT-2 possessed a high degree of sequence homology with R. gracialis, while Leucosporidium sp. BSS-1 possessed a high degree of sequence homology with Leu. antarcticum (Glaciozyma antarctica), and these two isolates demonstrated antifreeze activity. RGFP966 mouse All isolates examined were capable of growth at −1 °C. Mrakia spp., while capable of growth at −1 °C, did not demonstrate any antifreeze activity and exhibited only limited secretion of extracellular polysaccharides. Species

of the genus Mrakia possessed high amounts of unsaturated fatty acids, suggesting that members of this genus have adapted to cold environments by increasing their membrane fluidity. “
“Enterotoxins produced by Staphylococcus aureus are the key pathogenicity factors that can cause a variety of illnesses in humans, including staphylococcal gastroenteritis and food poisoning. It has been proven that licochalcone A is a potentially

effective antimicrobial agent against S. aureus. In this study, Western blot assays, tumour necrosis factor release assays, murine T-cell proliferation assays, and real-time reverse transcriptase-PCR were performed Romidepsin molecular weight to evaluate the effect of subinhibitory concentrations of licochalcone A on the secretion of two major enterotoxins (SEA and SEB) by S. aureus. The results show that licochalcone A significantly decreased, in a dose-dependent manner, the secretion of SEA and SEB by both methicillin-sensitive Nintedanib cell line S. aureus and methicillin-resistant S. aureus. These results may increase the desirability of using licochalcone A as a lead compound for the design of more potent antibacterial agents based on the chalcone template. Staphylococcus aureus is one of the most important community- and hospital-acquired pathogens, and it continues to cause a wide spectrum of serious diseases, including skin and soft tissue lesions, as well as lethal infections such as osteomyelitis, endocarditis,

pneumonia, and septicaemia (Liang et al., 2006). Owing to the development of drug resistance, the morbidity and mortality associated with S. aureus infections remain high in spite of antimicrobial therapy (Kuroda et al., 2007). In addition, S. aureus secretes a number of exotoxins (e.g. haemolysins, enterotoxins, protein A, TSST-1, and coagulase) that contribute to a variety of diseases (Ohlsen et al., 1997). Exotoxins are produced by S. aureus in a growth-phase-dependent manner, primarily during the postexponential phase of growth (Arvidson & Tegmark, 2001). Furthermore, the expression of virulence factors is generally modulated in response to alternations in cell-population density through a process referred to as quorum sensing (Miller & Bassler, 2001). Staphylococcal enterotoxins (SEs) are the major virulence factors that cause staphylococcal gastroenteritis and are one cause of food poisoning in humans (Tseng & Stewart, 2005; Bania et al., 2006).

This encompassed estimating the eligibility and consent rate for

This encompassed estimating the eligibility and consent rate for a PLEC study, plus the acceptability of potential intervention outcome measures and likely effects.

Methods  Eligible patients with a diagnosis of epilepsy and prescribed AEDs were invited by telephone to attend a PLEC. Baseline adherence, general mental well-being, epilepsy-related quality of life and satisfaction with information received about epilepsy medication were VE-822 recorded. The intervention was a 30 min consultation to provide participants with an opportunity to ask questions related to their epilepsy therapy. Baseline data collection was repeated after 2 months. Results  Of 106 (97.2%) consenting patients, 82 (77.4%) attended the PLEC. The 2 month follow-up questionnaire was fully completed by 50 (67.6%) participants. The number (percentage ± 95% confidence interval) of participants reporting adherent behaviour pre-PLEC was 22 (44.0 ± 13.7%) which increased to 30 (60 ± 13.6%) post-PLEC (P < 0.03, McNemar test). Discussion  Accepting the limitations of a before-and-after study and small sample size, the findings suggest that a PLEC may improve adherence.

A definitive trial is necessary to confirm the effect of a PLEC and establish the longevity and cost-effectiveness of the outcomes. Attrition of potential participants FK506 in vitro not contactable by telephone suggests the need for additional postal contact in subsequent trials. A reduction in loss to follow-up is also Thymidylate synthase desirable and potentially achievable using telephone reminders. “
“Objective  The study determined the rate of disability among diabetic

patients at a public district hospital in Thailand and compared the costs of illness among different levels of severity of disability. This was the first such study carried out in Thailand. Methods  The study was conducted at Waritchaphum Hospital in northeastern Thailand. Data were collected from 475 randomly selected diabetic patients identified by the World Health Organization’s International Classification of Diseases, tenth revision (ICD-10 codes E10 – E14) who received treatment from the study hospital during the fiscal year of 2008. The disability levels were determined by using Thailand ministerial guidelines as well as the Barthel index score. Cost-of-illness estimates followed the prevalence-based approach and it presented the societal perspective of cost-of-illness of diabetes in 2008. Key findings  The study results showed that 9.68% of the study participants had physical impairment while 9.26% had impairment in eyesight. The Barthel index score showed that 13.5% of the study participants were disabled. When comparing costs between independent and disabled persons, considering the Barthel index score, average costs for the disabled diabetic persons were significantly higher than for those who were independent (US$2700.29 versus 598.24; P < 0.001).

43; Fig 4K) Again, SICI was significantly correlated

to

43; Fig. 4K). Again, SICI was significantly correlated

to the reciprocal function of the peak size (1/peak, P < 0.00001, R2 = 0.35; Fig. 4L) but not to its logarithm (P = 0.8). In two of 18 units, the peak was not depressed after SICI, and when the group analysis was repeated omitting these units, the results were similar to the whole sample of 18 motor units. Protocols 1 and 2 revealed a significant influence of the test pulse on SICI, with significant correlation between SICI and 1/peak. Table 1 shows the mean data from the two protocols. In both, SICI was hardly evoked when the test peak was < 10–15% the number of stimuli (Figs 2K and 4K). In Protocol 2, stronger Caspase-independent apoptosis test pulses evoking larger test peaks, as compared with Protocol 1, were investigated revealing a decreased in SICI when test peak size was > 30%

the number of stimuli, and with test TMS > 0.90 RMT (compare Figs 2K and 4K). This study has shown that, while the test peak produced by single TMS in the PSTH increases linearly with TMS intensity, SICI in a paired pulse paradigm depends on test peak size and test TMS intensity in non-linear fashion. Small peaks (< 15% the number of stimuli) evoked at low TMS intensities < 0.80 RMT are not sensitive to SICI. The paired pulse inhibition became apparent when test peaks were larger (15–30%) with test TMS between 0.80 and STA-9090 0.90 RMT. Finally, SICI was hardly evoked when the test peak was > 40%, and test pulse at 0.95 RMT. TMS can evoke multiple corticospinal volleys, distinguishable in epidural

recordings (Burke et al., 1993; Di Lazzaro et al., 1998a) and in the PSTH of single motor units (Day et al., 1989), with minimal periodicity of 1.5 ms, as in the 16 motor units exhibiting multiple peaks in the PSTH, in the present study. Each volley has a different sensitivity to SICI: the D-wave (activation very of pyramidal axons) and the first I-wave (I1: transynaptic response of pyramidal cells) are less affected by SICI than late I-waves (Nakamura et al., 1997; Hanajima et al., 1998; Di Lazzaro et al., 1998b; Fig. 5). Given only the latency of a peak in a PSTH, it is difficult to be certain which wave in the corticospinal volley underlies the peak without transcranial electrical stimulation, which can be used to identify the D-wave latency (Day et al., 1989). However, I-waves are elicited at a lower threshold intensity than the D-wave under the stimulating conditions in this study (Sakai et al., 1997; Di Lazzaro et al., 2002), and because SICI was evoked in 38 of 45 motor units, we assume that the peaks we investigated were mediated by I-waves in mostly units. The peak in a PSTH is directly related to the rising phase of the underlying EPSP at motoneuron level (Ashby & Zilm, 1982).

All qPCR was run in duplicate for each cDNA sample and three F c

All qPCR was run in duplicate for each cDNA sample and three F. columnare cDNA samples were analyzed by qPCR. The relative transcriptional levels of different genes were determined by subtracting the cycle threshold (Ct) of the sample by that of the 16S rRNA gene, the calibrator or internal control, as per the formula: ΔCt=Ct (sample)−Ct (calibrator).

The relative transcriptional level of a specific gene in F. columnare after mucus treatment VE-822 concentration compared with that in the untreated F. columnare was then calculated using the formula 2ΔΔCt where ΔΔCt=ΔCt (with mucus)−ΔCt (without mucus) as described previously (Pridgeon et al., 2009). The chemotaxis results were statistically analyzed by anova, followed by Duncan’s multiple Erismodegib supplier range test to determine significant differences between means of CFU mL−1 (sas, version 9.1, Cary, NC). Transcriptional-level data were analyzed by anova using sigmastat statistical analysis

software (Systat Software, San Jose, CA). A 95% confidence interval was considered to be significant. To quantify the F. columnare chemotactic response in CFU mL−1, the corrected absorbance values for the cell concentrations were plotted against the corresponding numbers of viable F. columnare CFU mL−1. A positive linear correlation was obtained between corrected absorbance values and CFU mL−1 (Fig. 1). The coefficient of determination (r2) was 0.9831. The chemotactic response was determined from the following equation of the line [X=(Y−0.3051)/0.0000007327], where X is the number of viable heptaminol F. columnare CFU mL−1 and Y is the OD490 nm or A490 nm values. The results in Table 2 show that sodium metaperiodate treatment significantly (P<0.05) inhibited the chemotactic response at all the concentrations tested. A concentration of 0.5 mM was the lowest concentration that significantly (P<0.05) inhibited chemotaxis. The effect of carbohydrate treatment on the chemotaxis of F. columnare is presented in Table 3. Pretreatment of cells with d-mannose resulted

in the strongest inhibition of chemotaxis. Significant (P<0.05) inhibition was also observed following treatment with either d-glucose or N-acetyl-d-glucosamine. Other mono- or disaccharides tested failed to significantly inhibit chemotaxis. Treatment with d-mannose treatment consistently caused a significant (P<0.05) 65.9% inhibition in the chemotactic response of F. columnare to mucus samples from 24 individual healthy catfish (data not shown). The capsule of untreated F. columnare cells is shown in Fig. 2a. The effect of sodium metaperiodate treatment on the capsule of F. columnare is shown in Fig. 2b. In Fig. 2a, the bacterial cells were surrounded by a thick capsular layer. However, sodium metaperiodate treatment considerably reduced the thickness of the capsule to a very thin layer surrounding the cells (Fig. 2b). The relative transcriptional levels of three gliding motility genes (gldB, gldC and gldH) of normal (untreated) F.

All qPCR was run in duplicate for each cDNA sample and three F c

All qPCR was run in duplicate for each cDNA sample and three F. columnare cDNA samples were analyzed by qPCR. The relative transcriptional levels of different genes were determined by subtracting the cycle threshold (Ct) of the sample by that of the 16S rRNA gene, the calibrator or internal control, as per the formula: ΔCt=Ct (sample)−Ct (calibrator).

The relative transcriptional level of a specific gene in F. columnare after mucus treatment click here compared with that in the untreated F. columnare was then calculated using the formula 2ΔΔCt where ΔΔCt=ΔCt (with mucus)−ΔCt (without mucus) as described previously (Pridgeon et al., 2009). The chemotaxis results were statistically analyzed by anova, followed by Duncan’s multiple Z-VAD-FMK chemical structure range test to determine significant differences between means of CFU mL−1 (sas, version 9.1, Cary, NC). Transcriptional-level data were analyzed by anova using sigmastat statistical analysis

software (Systat Software, San Jose, CA). A 95% confidence interval was considered to be significant. To quantify the F. columnare chemotactic response in CFU mL−1, the corrected absorbance values for the cell concentrations were plotted against the corresponding numbers of viable F. columnare CFU mL−1. A positive linear correlation was obtained between corrected absorbance values and CFU mL−1 (Fig. 1). The coefficient of determination (r2) was 0.9831. The chemotactic response was determined from the following equation of the line [X=(Y−0.3051)/0.0000007327], where X is the number of viable Thalidomide F. columnare CFU mL−1 and Y is the OD490 nm or A490 nm values. The results in Table 2 show that sodium metaperiodate treatment significantly (P<0.05) inhibited the chemotactic response at all the concentrations tested. A concentration of 0.5 mM was the lowest concentration that significantly (P<0.05) inhibited chemotaxis. The effect of carbohydrate treatment on the chemotaxis of F. columnare is presented in Table 3. Pretreatment of cells with d-mannose resulted

in the strongest inhibition of chemotaxis. Significant (P<0.05) inhibition was also observed following treatment with either d-glucose or N-acetyl-d-glucosamine. Other mono- or disaccharides tested failed to significantly inhibit chemotaxis. Treatment with d-mannose treatment consistently caused a significant (P<0.05) 65.9% inhibition in the chemotactic response of F. columnare to mucus samples from 24 individual healthy catfish (data not shown). The capsule of untreated F. columnare cells is shown in Fig. 2a. The effect of sodium metaperiodate treatment on the capsule of F. columnare is shown in Fig. 2b. In Fig. 2a, the bacterial cells were surrounded by a thick capsular layer. However, sodium metaperiodate treatment considerably reduced the thickness of the capsule to a very thin layer surrounding the cells (Fig. 2b). The relative transcriptional levels of three gliding motility genes (gldB, gldC and gldH) of normal (untreated) F.