Briefly, 200 ng of each sample DNA was mixed with denaturing buff

Briefly, 200 ng of each sample DNA was mixed with denaturing buffer and spotted onto a Hybond N+ membrane (Amersham Biosciences, Buckinghamshire, Caspase inhibitor UK) using a 96-well Bio-Dot apparatus (Bio-Rad, Ivry-sur-Seine, France). DNA of the reference strain

ATCC43504 and human DNA were also transferred to the membrane as positive and negative controls, respectively. The cagA of strain ATCC43504 was amplified by PCR with the above-mentioned primer sets. The amplified fragments were purified with an Illustra GFX PCR DNA and Gel Band Purification Kit and used as probes. The probes were labeled with horseradish peroxidase, hybridized to the membranes overnight at 42°C, and finally exposed to Hyperfilm ECL using ECL Direct signaling pathway Nucleic Acid Labeling and Detection Systems (Amersham Biosciences, Buckinghamshire, UK). Histological analysis Three biopsy specimens from the antrum, corpus and upper part of the lesser curvature were used for histological examination. The biopsy specimens were fixed in 10% buffered formalin, and thinly

sliced sections were stained with hematoxylin and eosin (H&E) and Giemsa. Histological features of neutrophil infiltration, mononuclear cell infiltration, grade of atrophy and grade of intestinal metaplasia were scored into four grades in accordance with the Updated Sydney system (0: none, 1: mild, 2: moderate, 3: severe) [31]. Statistical analysis Statistical analysis of the distribution of H. pylori genotypes was performed using Fisher’s exact test. The Mann-Whitney rank sum test was used for Wnt inhibitor assessing differences between ordered categories such as histological grade. The effects of the H. pylori genotypes on the risk for developing peptic ulcer in patients were expressed as odds ratios with 95% confidence intervals with reference to subjects with gastritis. Multiple linear regression analysis was performed to determine which factor(s) was related to the severity of Phosphoglycerate kinase histology, where age, sex, bacterial factors and clinical outcome were explanatory variables. Variables were selected by backward stepwise deletion in the logistic

regression and by the F-out and F-in stepwise method in the linear regression, where F values were both 2.0. Differences at P < 0.05 were accepted as statistically significant. Calculations were carried out using the statistical software package ”JMP IN(R) 5.1J” (SAS Institute, Cary, NC) or ”HALBAU” (Gendai Sugaku-sha, Kyoto, Japan). Nucleotide sequence data reported are available under the DDBJ accession numbers AB469377, and AB469561 to AB469657. Acknowledgements This work was supported in part by Grants-in-Aid from the Japan Society for the Promotion of Science (20790285). This work was also supported in part by the Office of Research and Development, Medical Research Service Department of Veterans Affairs, and by a Public Health Service grant DK56338, which funds the Texas Medical Center Digestive Diseases Center.

Results The electronic search yielded 463 abstracts which were re

Results The electronic search yielded 463 abstracts which were read in full. 41 full papers were retrieved of which 26 were excluded leaving 15 CH5183284 concentration studies in separate populations to be included in the review (see Table Proteasome inhibitor 2). Reasons for exclusion were (may be >1 /study); Not primary study (editorial/non systematic review) n = 3 Outcome was not fibrosis (usually alcoholic hepatitis) n = 6 Participants <30 n = 1 No results separable for ALD alone n = 6 No results reported

as sensitivity, specificity, ROC curves, diagnostic accuracy n = 11 (Most of these studies reported correlation coefficients/differences in means of serum markers between group with fibrosis and those with less fibrosis). No results for fibrosis alone separable from data that combined steatosis with fibrosis or fibrosis/cirrhosis with acute alcoholic hepatitis (AH) n = 4 No systematic reviews or meta-analyses were identified. Studies were conducted between 1989 and 2009. Study characteristics are shown in Table 2. The median age of participants in included studies

was 50 years (range 44–65 years), 77% were male (range 63-100%) and the median number of study participants was 146 (range 44–1034). The median background prevalence of serious fibrosis/cirrhosis was 41% (14-59%). All of the studies were conducted in secondary/tertiary settings. There was marked differences ITF2357 mw between the studies. Different scoring systems were used: METAVIR much (or modified METAVIR) n = 6; Scheuer n = 1; Ishak n = 2; Knodell n = 1; Worner /Lieber n = 1, and locally generated n = 5 (mostly dividing fibrosis into mild, moderate or severe). 13/15 studies presented data that showed the performance of the markers in identifying

cirrhosis/severe fibrosis (METAVIR stages 4 /3,4), 5/15 reported significant fibrosis (METAVIR stages 2–4), and 3/15 studies reported information identifying any fibrosis). All of the studies evaluated performance of markers using cross sectional data for paired samples of histology and serum. 14/15 studies recruited prospectively, and half recruited consecutive patients. There was heterogeneity of patient selection. Although all participants were recruited in a hospital setting, some were hospitalized and some were out- patients. There were also differences in both in the inclusion criteria and daily alcohol consumption. Inclusion criteria reported were patients with previously diagnosed ALD, and or “alcoholism” or heavy alcohol consumption, or patients admitted for rehabilitation/detoxification/alcohol withdrawal symptoms.

Infect Immun 2006, 74:6046–6056 CrossRefPubMed 38 O’Brien R, Mac

Infect Immun 2006, 74:6046–6056.CrossRefPubMed 38. O’Brien R, Mackintosh CG, Bakker D, Kopecna

M, Pavlik I, Griffin JFT: Immunological and molecular characterization of susceptibility in relationship to bacterial strain differences in Mycobacterium avium subsp. paratuberculosis infection in the red deer ( Cervus elaphus). Infect Immun 2006, 74:3530–3537.CrossRefPubMed 39. Verna AE, Garcia-Pariente C, Munoz M, Moreno O, Garcia-Marin JF, Romano MI, Paolicchi F, Perez V: Variation in the immuno-pathological responses of lambs after experimental infection with different strains selleck kinase inhibitor of Mycobacterium avium subsp. paratuberculosis. Zoonoses and Public Health 2007, 54:243–252.CrossRefPubMed 40. Marsh IB, Whittington RJ: Genomic diversity in Mycobacterium avium : Single nucleotide polymorphisms between the S and C strains of M. avium subsp. paratuberculosis and with M. a. avium. Mol Cell Probes 2007, 21:66–75.CrossRefPubMed 41. Reddacliff LA, Vadali A, Whittington RJ: The effect of decontamination protocols on the numbers of sheep strain Mycobacterium avium subsp. paratuberculosis isolated from tissues and faeces. Vet Anlotinib concentration Microbiol 2003, 95:271–282.CrossRefPubMed 42. Whittington RJ, Marsh I, McAllister S, Turner MJ,

Marshall DJ, Fraser CA: Evaluation of modified BACTEC 12B radiometric MLN2238 nmr medium and solid media for culture of Mycobacterium avium subsp. paratuberculosis from sheep. J Clin Microbiol 1999, 37:1077–1083.PubMed 43. Juste RA, Marco JC, Deocariz CS, Aduriz JJ: Comparison of different media for the isolation of small ruminant

strains of Mycobacterium paratuberculosis. Vet Microbiol 1991, 28:385–390.CrossRefPubMed 44. de Juan L, Alvarez J, Romero B, Bezos J, Castellanos E, Aranaz A, Mateos A, Dominguez L: Comparison of four different culture media for isolation and growth of Type II and Type I/III Mycobacterium avium subsp. paratuberculosis strains isolated from cattle and goats. Appl Environ Microbiol 2006, 72:5927–5932.CrossRefPubMed 45. Gumber S, Whittington RJ: Comparison of BACTEC 460 and MGIT 960 systems for the culture of Mycobacterium avium subsp. paratuberculosis S strain and observations on the Etofibrate effect of inclusion of ampicillin in culture media to reduce contamination. Vet Microbiol 2007, 119:42–52.CrossRefPubMed 46. Beard PM, Rhind SM, Buxton D, Daniels MJ, Henderson D, Pirie A, Rudge K, Greig A, Hutchings MR, Stevenson K, Sharp JM: Natural paratuberculosis infection in rabbits in Scotland. J Comp Pathol 2001, 124:290–299.CrossRefPubMed 47. Judge J, Kyriazakis I, Greig A, Davidson RS, Hutchings MR: Routes of intraspecies transmission of Mycobacterium avium subsp. paratuberculosis in rabbits ( Oryctolagus cuniculus ): a field study. Appl Environ Microbiol 2006, 72:398–403.CrossRefPubMed 48.

Biol Chem 2011,392(1–2):5–12 PubMed 39 Liebeskind BJ, Hillis DM,

Biol Chem 2011,392(1–2):5–12.PubMed 39. Liebeskind BJ, Hillis DM, Zakon HH: Phylogeny unites animal sodium leak channels with fungal calcium channels in an ancient, voltage-insensitive clade. Mol Biol Evol 2012,29(12):3613–6.PubMedCentralPubMed 40. Raja M: The potassium channel KcsA: a model protein in studying membrane protein oligomerization and stability of oligomeric assembly? Arch Biochem Biophys 2011,510(1):1–10.PubMed 41. Danielson JA, Johanson U: Phylogeny of major intrinsic proteins. Adv Exp Med Biol 2010, 679:19–31.PubMed 42. Booth IR, Blount

P: The MscS and MscL Families of Mechanosensitive channels act as microbial emergency release valves. J Bacteriol 2012,194(18):4802–4809.PubMedCentralPubMed 43. Barabote RD, Rendulic S, Schuster SC, Saier MH Jr: Comprehensive analysis of transport proteins encoded within the genome of Bdellovibrio bacteriovorus. Genomics 2007,90(4):424–446.PubMedCentralPubMed selleck 44. Maier RV, Hahnel GB, Pohlman TH: Endotoxin requirements for alveolar macrophage stimulation. J Trauma 1990,30(12 Suppl):S49–57.PubMed 45. Hagan CL, Silhavy TJ: Kahne D: beta-Barrel membrane protein assembly by the Bam complex. Annu Rev Biochem 2011, 80:189–210.PubMed 46. Freinkman E, Okuda S, Ruiz N, Kahne D: Regulated assembly of the transenvelope protein complex required for lipopolysaccharide learn more export. Biochemistry 2012,51(24):4800–4806.PubMedCentralPubMed 47.

Chng SS, Xue M, Garner RA, Kadokura H, Boyd D, Beckwith J, Kahne D: Disulfide rearrangement triggered HSP inhibitor by translocon assembly controls lipopolysaccharide export. Science 2012,337(6102):1665–8.PubMedCentralPubMed Carnitine palmitoyltransferase II 48. Pao SS, Paulsen IT, Saier MH Jr: Major facilitator superfamily. Microbiol Mol Biol Rev 1998,62(1):1–34.PubMedCentralPubMed 49. Reddy VS, Shlykov MA, Castillo R, Sun EI, Saier MH Jr: The major facilitator superfamily (MFS) revisited. Febs J 2012,279(11):2022–2035.PubMedCentralPubMed 50. Winkler HH, Neuhaus HE: Non-mitochondrial ATP transport. Trends Biochem Sci 1999,24(2):64–68.PubMed 51. Haferkamp I, Schmitz-Esser S, Wagner M, Neigel N, Horn M, Neuhaus HE: Tapping

the nucleotide pool of the host: novel nucleotide carrier proteins of Protochlamydia amoebophila. Mol Microbiol 2006,60(6):1534–1545.PubMedCentralPubMed 52. Zhang Y, Ducret A, Shaevitz J, Mignot T: From individual cell motility to collective behaviors: insights from a prokaryote, Myxococcus xanthus. FEMS Microbiol Rev 2012,36(1):149–164.PubMed 53. Nijnik A, Clare S, Hale C, Chen J, Raisen C, Mottram L, Lucas M, Estabel J, Ryder E, Adissu H, et al.: The role of sphingosine-1-phosphate transporter Spns2 in immune system function. J Immunol 2012,189(1):102–111.PubMedCentralPubMed 54. Fukuhara S, Simmons S, Kawamura S, Inoue A, Orba Y, Tokudome T, Sunden Y, Arai Y, Moriwaki K, Ishida J, et al.: The sphingosine-1-phosphate transporter Spns2 expressed on endothelial cells regulates lymphocyte trafficking in mice.

The transcription factor p53 plays a key role in the DNA damage r

The transcription factor p53 plays a key role in the DNA damage response to genotoxic stress by binding directly to the promoters of target

genes and altering the rate at which they are transcribed. Once activated,p53 induces or represses various target genes,including proapoptotic Bcl-2 genes,leading to a myriad of cellular outcomes, including apoptosis,growth arrest, cellular senescence, and DNA repair. Thus, Autophagy Compound Library cost p53 integrates cellular stress responses, and loss of p53 function leads to the aberrant proliferation of damaged cells.It has shown the expression levels of both Bcl-2 and Mcl-1 proteins significantly increased in mesothelin-overexpressed WF-0 transfectants. Interestingly, more endogenous PCI-34051 mesothelin introduced caused lower expression of the pro-apoptotic protein Bax. These results indicate that endogenous mesothelin not only enhanced the expression of the anti-apoptotic proteins Bcl-2 and Mcl-1, but also reduced the expression of the pro-apoptotic protein Bax [10].In the present study,we study whether mesothelin regulates proliferation and apoptosis in pancreatic cancer cells through p53-bcl-2/bax pathway. One important p53 effector is PUMA (p53-upregulated modulator of apoptosis) [19]. PUMA is a Bcl-2 Crenolanib price homology 3 (BH3)-only Bcl-2 family member and a critical mediator of p53-dependent and -independent apoptosis induced by a wide variety of stimuli, including

genotoxic stress, deregulated oncogene expression, toxins, altered redox status, growth factor/cytokine withdrawal and infection. It serves as a proximal signaling molecule whose expression is regulated by transcription factors in response to these stimuli. PUMA transduces death signals primarily to the mitochondria, where it acts indirectly on the Bcl-2 family members Bax and/or Bak by relieving the inhibition imposed by antiapoptotic members. It directly binds and antagonizes all known antiapoptotic Bcl-2 family members

to induce mitochondrial dysfunction and caspase activation [20]. It has shown MIA PaCa-2- mesothelin cells showed increased expression of anti-apoptotic Bcl-xL and Mcl-1,deactivated Branched chain aminotransferase (p-Ser75) BAD, and activated (p-Ser70) Bcl-2,and vice verce [17]. We hypothesis that mesothelin regulates anti-apoptotic effect via PUMA pathway. In the present study, we investigated the effect of mesothelin overexpression or sliencing on apoptosis and proliferation in pancreatic cancer cells with different p53 status,and disscused the mechanism. Materials and methods Cell culture and regents Human pancreatic cancer cell lines AsPC-1(p53-null), HPAC and Capan-2(wt-p53), Capan-1 and MIA PaCa-2(mutant p53)were purchased from the American Type Culture Collection (ATCC, Rockville, MD). The cells were routinely cultured in Dulbecco’s Modified Eagle’s Medium (DMEM). They were all lemented with 10% fetal bovine serum (FBS) in a 37°C incubator in a humidified atmosphere of 5% CO2.

g , Vitamin E, niacin, folic acid, vitamin C, etc), few have been

g., Vitamin E, niacin, folic acid, vitamin C, etc), few have been reported to directly provide ergogenic value for athletes. However, MLN8237 some vitamins may help LY2874455 athletes tolerate training to a greater degree by reducing oxidative damage (Vitamin E, C) and/or help to maintain a healthy immune system during heavy training (Vitamin C). Theoretically, this may help athletes tolerate heavy training leading to improved performance. The remaining vitamins reviewed appear to have little ergogenic value for athletes who consume a normal, nutrient dense diet. Since dietary analyses of athletes have found

deficiencies in caloric and vitamin intake, many sports nutritionists’ recommend that athletes consume a low-dose daily multivitamin and/or a vitamin enriched post-workout carbohydrate/protein supplement YH25448 during periods of heavy training. An article in the Journal of the American Medical Association also recently evaluated the available medical literature and recommended that Americans consume a one-a-day low-dose multivitamin

in order to promote general health. Suggestions that there is no benefit of vitamin supplementation for athletes and/or it is unethical for an sports nutrition specialist to recommend that their clients take a one-a-day multi-vitamin and/or suggest taking other vitamins that may raise HDL cholesterol levels and decrease risk of heart disease (niacin), serve as antioxidants (Vitamin E), preserve musculoskeletal function and skeletal mass (vitamin D), or may help maintain a health immune system (Vitamin C) is not consistent with current available literature. Table 1 Proposed Nutritional Ergogenic Aids – Vitamins Nutrient RDA Proposed Ergogenic Value Summary of Research Findings Vitamin A Males 900 mcg/d Females 700 mcg/d Constituent of rhodopsin (visual pigment) and is involved in night vision. Some suggest that vitamin A

supplementation may improve sport vision. No studies have shown that vitamin A supplementation improves exercise performance [480]. Vitamin D 5 mcg/d (age <51) Promotes bone growth Non-specific serine/threonine protein kinase and mineralization. Enhances calcium absorption. Supplementation with calcium may help prevent bone loss in osteoperotic populations. Co-supplementation with calcium may help prevent bone loss in athletes susceptible to osteoporosis [481]. However, vitamin D supplementation does not enhance exercise performance [480]. Vitamin E 15 mg/d As an antioxidant, it has been shown to help prevent the formation of free radicals during intense exercise and prevent the destruction of red blood cells, improving or maintaining oxygen delivery to the muscles during exercise. Some evidence suggests that it may reduce risk to heart disease or decrease incidence of recurring heart attack. Numerous studies show that vitamin E supplementation can decrease exercise-induced oxidative stress [482–484]. However, most studies show no effects on performance at sea level.

To obtain a phylogenetic relationship between the various phyloty

To obtain a phylogenetic relationship between the various phylotypes, one representative member of each phylotype was selected. To determine if the number of clones analyzed in lab-reared and field- adapted adults were representative for the each bacterial community, a table was made in which each OTU was listed as many times as its observed frequency. Rarefaction curve was generated by plotting the number of OTUs observed against number of sequences sampled [55]. Acknowledgements This work was supported by research grant from the ‘Core Budget’ of “”International selleck kinase inhibitor Centre for Genetic Engineering

and Biotechnology”" (ICGEB), New Delhi, India. Research fellows AR and AS were supported through grants awarded by “”Department of Biotechnology”" (DBT), New Delhi, India. Electronic supplementary material Additional file 1: Antibiotic sensitivity assay of microbial strains isolated from A. stephensi midgut. The data provided represents the antibiotic response of strains isolated from A. stephensi midgut against selected class of antibiotics. (DOC 88 KB) References 1. Hedges LM, Brownlie JC, O’Neill SL, Johnson KN:Wolbachia and virus protection in insects. Science 2008, 322:702.PubMedCrossRef Go6983 2. McMeniman CJ, Lane RV, Cass BN, Fong AWC, Sidhu M, Wang

YF, O’Neill SL: Stable introduction of a life-shortening Wolbachia infection into the mosquito Aedes aegypti. Science 2009, 323:141–144.PubMedCrossRef 3. Rodrigues J, Agrawal N, Sharma A, Malhotra P, Adak T, Chauhan VS, Bhatnagar RK: Transcriptional analysis of an immune-responsive serine protease

from Indian malarial vector, Anopheles culicifacies. BMC Molecular Biol 2007, 8:33.CrossRef 4. Rodrigues J, Sharma A, Kajla M, Agrawal N, Adak T, Bhatnagar RK:Plasmodium infection upregulates prophenoloxidase (AcPPO6A) in Anopheles culicifacies. Innate Immunity 2009., 1: 5. buy AZD6738 Carlson J: Genetic manipulation of mosquitoes: an approach to controlling disease. Trends Biotechnol 1996, 1:447–448.CrossRef 6. Adenosine triphosphate Conte JE: A novel approach to preventing insect-borne diseases. N Engl J Med 1997, 337:785–786.PubMedCrossRef 7. Beard CB, Cordon-Rosales C, Durvasula RV: Bacterial symbionts of the triatominae and their potential use in control of Chagas disease transmission. Annu Rev Entomol 2002, 47:123–141.PubMedCrossRef 8. Moll RM, Romoser WS, Modrakowski MC, Moncayo AC, Lerdthusnee K: Meconial peritrophic membranes and the fate of midgut bacteria during mosquito (Diptera: Culicidae ) metamorphosis. J Med Entomol 2001, 38:29–32.PubMedCrossRef 9. Pumpuni CB, DeMaio J, Kent M, Davis JR, Beier JC: Bacterial population dynamics in three anopheline species: the impact on Plasmodium sporogonic development. Am J Trop Med Hyg 1996, 54:214–218.PubMed 10. Straif SC, Mbogo CN, Toure AM, Walker ED, Kaufman M, Toure YT, Beier JC: Midgut bacteria in Anopheles gambiae and An.

Texture parameters for 18 patients were included in the test, one

Texture parameters for 18 patients were included in the test, one patient participating in MaZda texture parameter calculation selleck compound was excluded because of smaller amount of image data than other patients leading to reduced textural data. In analyzing and this website seeking the best parameters for classification, it is vital to ensure low overall variation in the treatment process and to ascertain how this variation can be focused onto different components in the whole process.

In the present study the repeatability and reproducibility (R&R) method was applied. The design of the study was experimental, the aim being to estimate different sources of variation in the lymphoma texture at the three different timepoints (examinations 1, 2, and 3) and repeating the same measurements three times. Because the distributions were skewed, the range method was used. According to the standard Gage R&R terminology timepoints stand for operators, patients for parts and repeated measurements for trials.

In statistical terms the following variance components were estimated: repeatability (difference across measurements), reproducibility (difference across timepoints) and variability (difference across patients). Repeatability describes intrapatient variation, i.e., how a given measurer repeats the same planning process. Reproducibility describes interpatient variation, i.e., how different measurements at the timepoints follow the same planning process and variability describes interpatient variation, i.e. how well the same physician can repeat the planning process for different kinds of patients. The total error – also known as the combined R&R effect – includes repeatability and NSC23766 manufacturer reproducibility, and only patient-to-patient variation is excluded. In industrial applications the combined R&R should not exceed 10% of the total variation, but in certain situations a total error up to 30% may be acceptable. The present statistical analyses were performed by Statistica/W

(Version 5.1, 98 edition, Statsoft. Inc, Tulsa, OK, USA). Textural data from T1- and T2-weighted fat saturation image series were analysed separately and both groups divided into two subgroups according to slice thickness: 5–7 mm and 8–12 mm. Differences between imaging timepoints were analysed by Wilcoxon Signed Ranks. Mann-Whitney test was used to test rank parameters grouped by grade of malignity the and subjective change of symptoms. These analyses were performed by SPSS for Windows, version 14.0.2. Results Volumetric analysis The median volume of the lymphoma masses before treatment (E1) was 429 cm3, ranging from 72 cm3 to 2144 cm3. The median volume of the masses calculated from the second imaging timepoint (E2) was 190 cm3, ranging from 30 cm3 to1622 cm3. After the first treatment cycle, the lymphoma mass volume had decreased in all patients. The median decline in volume was 32%, ranging from 3% to 76%. The results of this volumetric analysis have been published earlier in more detail [37].

Microbiology 1995, 141:1691–1705 PubMedCrossRef 66 Figurski DH,

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putida . J Bacteriol 2000,182(23):6707–6713.PubMedCrossRef 68. Koch B, Jensen LE, Nybroe O: A panel of Tn 7 -based vectors for insertion of the gfp marker gene or for delivery of cloned DNA into Gram-negative bacteria at a neutral chromosomal site. J Microbiol Methods 2001,45(3):187–195.PubMedCrossRef Authors’ contributions MP and RH prepared design of experimental work. MP carried out transposon mutagenesis screen and participated in OMP analysis. AA purified OMPs and did OMP pattern analysis. HI constructed mutant strains and contributed enzyme assays. RH performed lysis assays, coordinated experimental work and wrote the manuscript. All authors participated in manuscript editing and approved the final manuscript.”
“Background Sirodesmin PL is the major phytotoxin produced by see more the

plant pathogen Leptosphaeria maculans (Desm.), the causal agent of blackleg disease of Brassica napus (canola). Sirodesmin PL has antibacterial

and antiviral properties [1] and is essential for full virulence of L. maculans on stems of B. napus [2]. This toxin is an epipolythiodioxopiperazine (ETP), a class of secondary metabolites characterised by the presence of a highly reactive disulphide-bridged dioxopiperazine ring synthesised from two amino acids (for review see [3]). The first committed step in the sirodesmin biosynthetic pathway is prenylation of tyrosine [4, 5]. As for other fungal secondary metabolites, the genes for the biosynthesis of sirodesmin PL are clustered. The sirodesmin cluster contains 18 genes that are co-ordinately regulated with timing consistent with sirodesmin PL production. Disruption of one of mafosfamide these genes, sirP, which encodes a peptide synthetase, results in an isolate unable to produce sirodesmin PL [6]. Based on comparative genomics, the cluster of genes in Aspergillus fumigatus responsible for the biosynthesis of another ETP, gliotoxin, was then predicted. The pattern of expression of the clustered homologs was consistent with gliotoxin production [7]. The identity of this gene cluster was confirmed via the disruption of peptide synthetase, gliP whereby the resultant mutant was unable to make gliotoxin [8, 9]. These ETP gene clusters also encode a Zn(II)2Cys6 transcription factor, namely SirZ for sirodesmin, and GliZ for gliotoxin [7].

Mol Microbiol 2002, 43:239–246 PubMedCrossRef 37 Oppenheim AB, K

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