نتایج جستجو برای: ompa

تعداد نتایج: 966  

Journal: :Journal of Molecular Structure 2021

The synthesized oligo [4-(methoxyphenyl) acetonitrile] (OMPA) was chemically modified by Knoevenagel condensation of OMPA with dimethylformamide dimethyl acetal (DMF-DMA). obtained oligomer is composed short chains poly [3-(dimethylamino)-2-(4-methoxyphenyl)acrylonitrile] and denoted OMFA. Experimental measurements: ultraviolet-visible (UV-vis), steady-state time-resolved photoluminescence spec...

Journal: :vaccine research 0
f badmasti department of bactriology, pasteur institute of iran, tehran, iran sd siadat department of bactriology, pasteur institute of iran, tehran, iran s bouzari department of molecular biology, pasteur institute of iran, tehran, iran o nasiri department of bactriology, pasteur institute of iran, tehran, iran h nemati department of bactriology, pasteur institute of iran, tehran, iran f shahcheraghi department of bactriology, pasteur institute of iran, tehran, iran

introduction: acinetobacter baumannii is associated with hospital-acquired infections. outer membrane protein a of a.baumannii (abompa) is a well-characterized virulence factor which has important roles in pathogenesis of this bacterium. methods: based on our pcr-sequencing of ompa gene in the clinical isolates, abompa protein can be categorized into two types, named here type-1 and type-2. we ...

2007
Jian Qu Christoph Mayer Susanne Behrens Otto Holst Jörg H. Kleinschmidt

*Corresponding author. E-mail addr Abbreviations used: BSA, bovine hVDAC1, voltage-dependent aniondomain of the autotransporter NalP OmpA, outer membrane protein A o isomerases; SurA, the survival factor WT-OmpA, wild type OmpA; YaeT The interactions of outer membrane proteins (OMPs) with the periplasmic chaperone Skp from Escherichia coli are not well understood. We have examined the binding o...

Journal: :rus & avhengighet 2003

2012
Masayuki Nakano Eiki Yamasaki Akitoyo Ichinose Takaaki Shimohata Akira Takahashi Junko K. Akada Kazuyuki Nakamura Joel Moss Toshiya Hirayama Hisao Kurazono

The mechanism of action of Salmonella enterotoxin (Stn) as a virulence factor in disease is controversial. Studies of Stn have indicated both positive and negative effects on Salmonella virulence. In this study, we attempted to evaluate Stn function and its effects on Salmonella virulence. To investigate Stn function, we first performed in vitro and in vivo analysis using mammalian cells and a ...

Journal: :The Journal of biological chemistry 1993
S Kawasaki S Mizushima H Tokuda

Everted membrane vesicles were prepared from Escherichia coli cells containing either overproduced amounts (OP-membrane vesicles) or normal amounts (normal membrane vesicles) of SecY and SecE, both of which are essential components of the protein translocation apparatus. The rates of translocation of pro-OmpA were similar in the two types of membrane vesicles, whereas translocation ATPase activ...

Journal: :Journal of bacteriology 1989
W A Woodruff R E Hancock

A Pseudomonas aeruginosa outer membrane protein F-deficient omega-insertion mutant strain H636, in contrast to its protein F-sufficient parent strain H103, was unable to grow on unsupplemented Proteose Peptone no. 2 broth (Difco Laboratories, Detroit, Mich.). Addition of high concentrations of NaCl, KCl, glucose, sucrose, or potassium succinate permitted growth of strain H636 at rates approachi...

Journal: :Enfermedades infecciosas y microbiologia clinica 2013
Sonia Santibáñez Aránzazu Portillo Paula Santibáñez Ana M Palomar José Antonio Oteo

BACKGROUND The effectiveness of PCR methods to amplify rickettsiae from clinical samples has still not been evaluated. Our aim was to determine the sensitivity and usefulness for Rickettsia species identification by PCR methods, targeting 16S rDNA, htrA, gltA, ompA, and ompB genes for molecular diagnosis of rickettsioses. METHODS A total of 72 clinical samples (EDTA-blood, skin biopsies and t...

Journal: :Applied and environmental microbiology 2006
Michelle L Power Belinda C Ferrari Jane Littlefield-Wyer David M Gordon Martin B Slade Duncan A Veal

A novel Escherichia coli outer membrane protein A (OmpA) was discovered through a proteomic investigation of cell surface proteins. DNA polymorphisms were localized to regions encoding the protein's surface-exposed loops which are known phage receptor sites. Bacteriophage sensitivity testing indicated an association between bacteriophage resistance and isolates having the novel ompA allele.

Journal: :The new microbiologica 2010
Stefania Starnino Rosanna Leuzzi Valeria Ghisetti Maria Antonia De Francesco Marco Cusini Giampaolo Impara Emma Galluppi Mariagrazia Pizza Paola Stefanelli

Molecular analyses of mip and ompA genes were performed on 20 Neisseria gonorrhoeae isolates. The genes were present with a high degree of conservation in all strains. Sera from patients with urethritis or disseminated gonococcal infections were able to recognize the purified Neisseria gonorrhoeae macrophage infectivity potentiator (Ng-MIP) and Neisseria gonorrhoeae outer membrane protein A (Ng...

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