1. Zh Mikrobiol Epidemiol Immunobiol. 1993 May-Jun;(3):12-7. [The physicochemical and biological characteristics of the Yersinia pestis pH 6 antigen isolated by an immunosorption method] Bacteriostasis of Y. pestis(but not enteropathogenic yersiniae) was abrupt in Ca2+-deficient medium at neutral to slightly alkaline pH (7.0 to 8.0), although increasing the pH to 8.5 or 9.0, especially with added Na+(but not l-glutamate), facilitated full-scale growth After migrating to the inside of macrophages, Y. pestis bacteria would encounter harsher microenvironments, including higher temperature, low pH values, osmotic pressure, and reactive oxygen species (as shown in Figure 1). Consequently, Y. pestis may have evolved the ability to adapt to these challenges
Yersinia pestis is a nonmotile, slow-growing, facultative organism classified in the family Enterobacteriaceae. It appears as plump, gram-negative coccobacilli that are seen mostly as single cells or pairs, which may exhibit bipolar staining from a direct specimen if stained with Wright's or Giemsa stains. This appearance has been referred to as safety pin-like Y. pestis was discovered in 1894 by Alexandre Yersin, a Swiss/French physician and bacteriologist from the Pasteur Institute, during an epidemic of the plague in Hong Kong. Yersin was a member of the Pasteur school of thought Description and significance Yersinia pestis was discovered in Hong Kong in 1894 by a Swiss physician Alexandre Yersin, who was a student of the Pasteur school of thought. He linked Y. pestis to the bubonic plauge, an epidemic that ravaged Europe during the 1300s Yersinia pestis by Pulsed Field Gel Electrophoresis (PFGE) PREPARATION OF PFGE PLUGS FROM AGAR CULTURES. BIOSAFETY WARNING: Yersinia pestis is a human pathogen and can cause serious disease. Check with your instituation's select agent policy before handling these isolates. Biosafety Level 2 or
Yersinia pestis, the causative agent of bubonic plague, has three remarkable attributes. First, it causes the most severe of all human bacterial infections as judged by historical records Disease/Infection Y. pestis causes a zoonotic disease of rodents and in humans can take the form of bubonic, septicemic or pneumonic plague
Yersinia pestis is a bacterial pathogen that causes bubonic plague in humans. As Y. pestis cycles between fleas and mammals, it senses the environment within each host to appropriately control gene expression. PsaA is a protein that forms fimbria-like structures and is required for virulence. High temperature and low pH together stimulate psaA transcription by increasing the levels of two. Plague is a widespread zoonotic disease that is caused by Yersinia pestis and has had devastating effects on the human population throughout history. Disappearance of the disease is unlikely due to the wide range of mammalian hosts and their attendant fleas Yersinia pestis Provider Requirements Isolate Submission REQUIRED. Contact Bioterrorism laboratory before submission. Acceptable Specimen Sources/Type(s) for Submission Culture Isolate Blood Aspirated fluids from lymph nodes or bubo TDH Requisition Form Number PH-4263 - Contact Bioterrorism laboratory before submission On September 18, 2009, the Chicago Department of Public Health (CDPH) was notified by a local hospital of a suspected case of fatal laboratory-acquired infection with Yersinia pestis, the causative agent of plague
Classification. Yersinia pestis. a nonmotile, gram-negative, facultative intracellular bacillus. non-lactose fermenting, oxidase negative, and does not produce H 2 S. reservoirs are rats and prairie dogs. transmitted via fleas. causes the bubonic plague (most common) and pneumonic plague Fatal Laboratory-Acquired Infection with an Attenuated Yersinia pestis Strain --- Chicago, Illinois, 2009. On September 18, 2009, the Chicago Department of Public Health (CDPH) was notified by a local hospital of a suspected case of fatal laboratory-acquired infection with Yersinia pestis, the causative agent of plague.The patient, a researcher in a university laboratory, had been working. The pH 6 antigen (Psa) of Yersinia pestis consists of fimbriae that bind to two receptors: β1-linked galactosyl residues in glycosphingolipids and the phosphocholine group in phospholipids. Despite the ubiquitous presence of either moiety on the surface of many mammalian cells, Y. pestis appears to prefer interacting with certain types of human cells, such as macrophages and alveolar.
Yersinia pestis , the etiological agent of pla gue, is a Gram-negative, highly communicable bacterium, known as a natural pathogen and as a biothreat agent. The primary natural route of human infection by Y. pestis is via flea-bite from infected rodents (40). Since, the bacter ia populate a significant amount of time in the flea vecto Yersinia pestis is the causative agent of plague and one of the deadliest pathogens known to man. Plague remains an enzootic infection on every populated continent except Australia, and its pandemic capacity and potential to cause significant morbidity and mortality is well-established. Y. pestis is responsible for at least three major. Introduction. Yersinia pestis, the causative agent of plague, usually harbours three plasmids (pPCP1, pMT1 and pCD1) that are necessary for the complete virulence of the pathogen; two of them, pPCP1 and pMT1, are species-specific while pCD1 is conserved among three human pathogenic yersiniae: Y. pestis, Yersinia pseudotuberculosis and Yersinia enterocolitica Lindler LE, Tall BD: Yersinia pestis pH 6 antigen forms fimbriae and is induced by intracellular association with macrophages. Mol Microbiol. 1993; 8(2): 311-24. PubMed Abstract | Publisher Full Text ; 121. Payne D, Tatham D, Williamson ED, et al.: The pH 6 antigen of Yersinia pestis binds to beta1-linked galactosyl residues in.
Introduction. Yersinia pestis is a facultative intracellular pathogen and causative agent of the disease known as plague. There have been three human plague pandemics in history; the most notable being the Black Death in the 14 th century [1, 2]. Y.pestis can infect humans either through the bite of an infected flea or inhalation of contaminated aerosols. . Flea inoculation can lead to the. Yersinia pestis disease : pathogenesis and treatment / Luther Lindler. Author: Lindler, Luther E. National Library of Medicine (U.S.) Publisher: Abstract: (CIT): Dr. Lindler is Director of Public Health Laboratory Services at the Department of Defense Global Emerging Infections Surveillance and Response System Since the US is non-endemic for plague, all participants will be presumed to be negative for Y. pestis. Diagnostic Test: Lateral Flow Assay for Pathogens of the Plague. A dipstick type of rapid test for antigens of the plague bacterium Yersinia pestis in samples from enrolled participants from both a known geography of plague activity. While studying Yersinia pestis, the bacteria responsible for epidemics of plague such as the Black Death, Wyndham Lathem, Ph.D., assistant professor in microbiology-immunology at Northwestern.
pH 6 antigen (Antigen 4) (Adhesin) Gene. psaA. Organism. Yersinia pestis biovar Orientalis str. PEXU2. Status. Unreviewed-Annotation score: -Protein predicted i. Function i Caution. The sequence shown here is derived from an EMBL/GenBank/DDBJ whole genome shotgun (WGS) entry which is preliminary data.. .5 and 0.01% gelatin solution), followed by spot assay or plaque assay . The phage stock was stored at 4 C in the dark until use. 2.3. Growth Media, Buffers, Antibiotics and Human Whole Bloo Subunits of pH 6 that further studies involving the use of mutants with antigen, which have a molecular mass of 15 kDa, assemble complete loss of the psa operon are required to clarify the on the surface of Y. pestis and Yersinia pseudotuberculosis role of the pH 6 antigen in the virulence of Y. pestis. into homopolymer macromolecular complexes. Abstract It was found that recombinant pH6 antigen (rPsaA protein) forming virulence‐associated fimbriae on the surface of Yersinia pestis at pH 6.7 in host macrophage phagolysosomes or extracellularly in abscesses such as buboes, is a novel bacterial Fc‐receptor. rPsaA protein displays reactivity with human IgG1, IgG2 and IgG3 subclasses but does not react with rabbit, mouse and sheep IgG Two novel phytase genes belonging to the histidine acid phosphatase family were cloned from Yersinia rohdei and Y. pestis and expressed in Pichia pastoris. Both the recombinant phytases had high activity at pH 1.5-6.0 (optimum pH 4.5) with an optimum temperature of 55°C. Compared with the major commercial phytases from Aspergillus niger, Escherichia coli, and a potential commercial phytase.
The pH 6 antigen of Yersinia pestis is a virulence factor that is expressed in response to high temperature (37 °C) and low pH (6.0). Previous studies have implicated the PsaE and PsaF regulators in the temperature- and pH-dependent regulation of psaA. Here, we show that PsaE levels are themselves controlled by pH and temperature, explaining the regulation of psaA YPO2037 y2275 YP_1880 Yersinia pestis Bacteria Proteobacteria Gammaproteobacteria Enterobacterales Yersiniaceae Yersinia. NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA] CO-92 / Biovar Orientalis 91001 / Biovar Mediaevalis Required for the biogenesis of the pH 6 antigen Yersinia pestis is the etiological agent of plague that has claimed millions of death in history. This lethal pathogen still poses a huge threat by causing sporadic plague outbreak every year and being a bioterrorism agent that can be potentially misused by terrorist (8 M urea in PBS, pH 7.4) and lysed by sonication in ice bath. The.
Vitronectin (Vn) is a major component of blood that controls many processes central to human biology. It is a drug target and a key factor in cell and tissue engineering applications, but despite long-standing efforts, little is known about the molecular basis for its functions. Here, we define the domain organization of Vn, report the crystal structure of its carboxyl-terminal domain, and. Yersinia pestis (KIM D27), Y. enterocolitica exposure to Yersinia [15,16]. Following 4 h exposure to (WA, serovar 0:8), and Y. pseudotuberculosis (serotype 1, PB1 ) the pathogens, host cells were lysed and the resulting from glycerol stocks were grown on tryptose blood agar plates at 26 °C soluble protein fractions were analyzed by 2-DE.
Yersinia pestis Provider Requirements Isolate Submission REQUIRED. Contact Bioterrorism laboratory before submission. Acceptable Specimen Sources/Type(s) for Submission Culture Isolate Blood Aspirated fluids from lymph nodes or bubo TDH Requisition Form Number PH-4263 Media Requirements Contact Bioterrorism laboratory Y. pestis is aerobic and facultatively anaerobic. It grows at atemperature range of 2-45°C with an optimum temperature of 27°C (unlike most bacteria), but it grows better at 37°C in culture. The bacteria grow at a wide range of pH (5-9.6), with an optimum pH of 7.2. Solid media: Y. pestiscan grow on a variety of media includ-ing Mueller. Yersinia pestis (also known as the Plague, Sylvatic Plague, and the Black Death) is a Gram-negative coccobacillus and zoonotic bacterium found in small mammals and their fleas. Y. pestis forms small (1-2 mm), grey-white to yellow, hammered copper colony formations when cultured. Plague manifests in symptomati Plague is an infectious disease caused by the bacteria Yersinia pestis, a zoonotic bacteria, usually found in small mammals and their fleas. It is transmitted between animals through fleas. Humans can be infected through: the inhalation of respiratory droplets/small particles from a patient with pneumonic plague
. pestis KIM6 + in LB medium acidified with HCl to pH 4.8. Growth in acidic medium was heavily impaired, and cultures reached a maximum optical density at 600 nm (OD 600 ) of ∼0.2 instead of 2.2 or more in neutral medium and showed increased autoaggregation Format: Protein G-purified antibody in PBS, pH 7.4, 0.09% sodium azide. BACKGROUND . Y. pestis, the causative agent of plague, has low-Ca+2 response (LCR) virulence plasmids that encode a set of secreted virulence proteins including Yersinia outer proteins (YOPS) and the V antigen, LcrV pH 6 antigen gene. Keyphrases antigen gene yersinia pestis ph transcriptional analysi
Through additional revisions, the genus Yersinia has grown to include eleven species (2, 9, 10, 51), three of which are potentially pathogenic to humans: Y. pestis, Y. pseudotuberculosis, and Y. immediately (day or night) to the local health department or to Oregon Public Health Division (OPHD). Laboratories must send isolates suspected of being Yersinia pestis or other Yersinia species to the Oregon State Public Health Laboratory (OSPHL) for confirmation. (OAR 333-018-0018, [1,2] Yersinia pestis is a Gram-negative bacterium that causes plague. Currently, plague is considered a re-emerging infectious (150 mM Tris pH 8.0, 80 mM EDTA pH 8.0, and 4.5 M sucrose) and treated with lysozyme (50 mg/ml in 10 mM Tris pH 8.0), lysis buffe
The bacterium, Yersinia pestis, the etiological agent responsible for the Black Death (Haensch et al., 2010) and two other plague pandemics has become essentially global in its endemicity. Yersinia pestis growth on Blood Agar A. 48 hours, B. 72 hours, C. 96 hours, and D. 96 hours fried egg Blood agar: Yersinia pestis gives pinpoint, non-hemolyic colonies on 5% sheep blood agar. After 48 to 72 hours, it shows gray-white to slightly yellow opaque raised, irregular fried egg or cauliflower appearance; alternatively.
. enterocolitica strain 8081 has a circular DNA chromosome of 4,615,899 bp. The number of coding sequences (CDSs) is 4037 with 7 rRNA operons and 81 tRNA. The GC content of the chromosome is 47.27%. Average gene size is 968 bp. The chromosome also contains 60 IS elements and 4 prophage regions Yersinia pestis biovar Orientalis isolates have lost the capacity to ferment glycerol. Herein we provide experimental validation that a 93bp in-frame deletion within the glpD gene encoding the glycerol-3-phosphate dehydrogenase present in all biovar Orientalis strains is sufficient to disrupt aerobic glycerol fermentation
YERSINIA PESTIS. A Dissertation Presented by. GREGORY IAN VLADIMER. The signatures of the Dissertation Defense Committee signify completion and approval as to style and content of the Dissertation Egil Lien, Ph.D., Thesis Advisor Neal Silverman, Ph.D., Member of Committee Jon Goguen, Ph.D., Member of Committee Ann Rothstein, Ph.D., Member of. .5 ~ 0.8 μm in diameter) of the family Enterobacteriaceae. It is regarded as a facultative extracellular pathogen and is the causative agent of the notorious plague .Plague (the Black Death epidemic caused by Y. pestis, 1347-1351), is a known flea-borne disease that can trigger large. T1 - RovA, a global regulator of Yersinia pestis, specifically required for bubonic plague. AU - Cathelyn, Jason S. AU - Crosby, Seth D. AU - Lathem, Wyndham W. AU - Goldman, William E. AU - Miller, Virginia L. PY - 2006/9/5. Y1 - 2006/9/5. KW - CUS-2 phage. KW - IcmF-associated homologous protein. KW - MarR/SlyA. KW - pH 6 antige Yersinia pestis, cansurvive for at least. 24 days. in contaminated soil under natural conditions.It is unclear by what mechanism. Y.pestis. wasable to persist in the soilTheseresults are preliminary and do not address 1)maximum time plague bacteria can persist in soil under natural conditions, 2) possible mechanisms b Y. pestis can produce biofilms that block flea's proventriculus and promote flea-borne transmission. Transcriptional regulation of Y. pestis biofilm formation plays an important role in the response to complex changes in environments, including temperature, pH, oxidative stress, and restrictive nutrition conditions, and contributes to Y. pestis.
The fraction 1 (F1) capsule of Yersinia pestis, the causative agent of plague, is a highly antigenic, virulence-associated surface structure (2, 28).The capsule, encoded by the caf gene cluster (Fig. 1A), has antiphagocytic activity and decreases uptake by macrophages and epithelial cells (7, 17).Capsule biogenesis occurs via the conserved chaperone/usher (CU) pathway (24, 27) and is dependent. Pneumonic plague occurs when Yersinia pestis infects the lungs. Transmission can take place if someone breathes in Y. pestis particles, which could happen in an aerosol release during a bioterrorism attack. Pneumonic plague is also transmitted by breathing in Y. pestis suspended in respiratory droplets from a person (or animal) with pneumonic.
Yersinia pestis expresses an envelope glycoprotein called Fraction 1 (F1) antigen only at temperatures >33°C. Serum antibodies to F1 are measured using passive hemagglutination assays (PHA). High titers of antibody along with correlating symptoms, such as buboes, generally indicate a positive diagnosis Three pathogenic species of the genus Yersinia assemble adhesive fimbriae via the FGL-chaperone/usher pathway. Closely related Y. pestis and Y. pseudotuberculosis elaborate the pH6 antigen (Psa), which mediates bacterial attachment to alveolar cells of the lung. Y. enterocolitica, instead, assembles the homologous fimbriae Myf of unknown function Yersinia enterocolitica infection. This page is about clinical aspects of the disease. For microbiologic aspects of the causative organism (s), see Yersinia enterocolitica. For Yersinia pestis infection (plaque), see Yersinia pestis infection
Yersinia pestis is short, plump, Gram-negative with rounded end and convex sides. A dead end host is an infected person from which infectious agents are not transmitted to other susceptible host or from which a parasite cannot escape to continue its life cycle. Ans The pH 6 antigen (Psa) of Yersinia pestis consists of fimbriae that bind to two receptors: β1-linked galactosyl residues in glycosphingolipids and the phosphocholine group in phospholipids. Despite the ubiquitous presence of either moiety on the surface of many mammalian cells, Y. pestis appears to prefer interacting with certain types of human cells, such as macrophages and alveolar. . the adhesive pilin subunit that forms the pH 6 antigen on the surface of Yersinia pestis. Acta crystallographica. Section F, Structural. Genel özellikleri Yersinia pestis gram-negatif bir bakteridir, Çubuk şeklinde kokobasildir. Fakültatif anaerobik bir bakteridir. En iyi gelişme sıcaklık: 25-30 derece. Insanları ve hayvanları çok enfekte etmektedir. Yersinia pestis çok tehlikeli ve ölümcül Hıyarcıklı veba, Pnömonik veba ve Septisemik veba hastalıklar nedenidir. Yersinia pestis is a gram-negative, nonsporulating coccobacillus responsible for causing plague.Y. pestis is in the Enterobacteriaceae family and is primarily an enzootic infection of rodents transmitted to humans by flea bites and respiratory droplets from infected animals or other humans ()(). Yersinia pseudotuberculosis also belongs to Enterobacteriaceae and was first isolated by Malassez.
Yersinia Pestis Infections-Global API Manufacturers, Marketed and Phase III Drugs Landscape, 2015 - The Report provides the India and China API Manufactures who are driving the current API Market. Stacy Agar, Ph'D' Microbiology - There is no vaccine available in the US Fingerprint. Dive into the research topics where Gregory V Plano is active. These topic labels come from the works of this person. Together they form a unique fingerprint. 6 Similar Profiles. Yersinia pestis Medicine & Life Sciences. Type III Secretion Systems Medicine & Life Sciences. Yersinia Medicine & Life Sciences