نتایج جستجو برای: outer membrane proteins omp

تعداد نتایج: 884310  

Journal: :Infection and immunity 1992
S V Hetherington C C Patrick

Antibodies directed against the capsular polysaccharide (polyribosyl ribitol phosphate [PRP]) or the outer membrane proteins (OMP) of Haemophilus influenzae type b (Hib) promote bactericidal activity, complement 3 (C3) binding, and ingestion by phagocytic cells. To assess the relative contribution of anti-OMP to host defense against Hib, we compared the opsonic activities of anti-PRP and anti-O...

Journal: :Trends in biochemical sciences 2016
Ashlee M Plummer Karen G Fleming

Outer membrane proteins (OMPs) play a central role in the integrity of the outer membrane of Gram-negative bacteria. Unfolded OMPs (uOMPs) transit across the periplasm, and subsequent folding and assembly are crucial for biogenesis. Chaperones and the essential β-barrel assembly machinery (BAM) complex facilitate these processes. In vitro studies suggest that some chaperones sequester uOMPs in ...

Journal: :Journal of molecular biology 2009
Alexander Brosig Jutta Nesper Winfried Boos Wolfram Welte Kay Diederichs

The thermophilic eubacterium Thermus thermophilus belongs to one of the oldest branches of evolution and has a multilayered cell envelope that differs from that of modern Gram-negative bacteria. Its outer membrane contains integral outer membrane proteins (OMPs), of which only a few are characterized. TtoA, a new beta-barrel OMP, was identified by searching the genome sequence of strain HB27 fo...

Journal: :Infection and immunity 1994
K L Klingman T F Murphy

Moraxella (Branhamella) catarrhalis is an important bacterial cause of otitis media in children and lower respiratory tract infections in adults. In this study, we describe the presence of a novel high-molecular-weight outer membrane protein (HMW-OMP). This protein varies from 350 to 720 kDa in apparent molecular mass among strains by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (S...

A. H. Wani G. Singh L. Verma M. Sharma P. Dhar R. Chahota S. Verma, V. Dogra

Pasteurella multocida (P. multocida) is an important pathogen of various domestic animals. The outer membrane proteins (OMPs) play a major role in pathogenesis and immunogenicity of P. multocida. The aim of the study was to develop indirect enzyme linked immuno sorbant assay (ELISA) based on OMPs to ascertain the antibody titers in animals post-infection or to gauge the potency of vaccine. The ...

Journal: :FEMS microbiology reviews 2004
Paul A Cullen David A Haake Ben Adler

Pathogenic spirochetes are the causative agents of several important diseases including syphilis, Lyme disease, leptospirosis, swine dysentery, periodontal disease and some forms of relapsing fever. Spirochetal bacteria possess two membranes and the proteins present in the outer membrane are at the site of interaction with host tissue and the immune system. This review describes the current kno...

Journal: :international journal of molecular and cellular medicine 0
ava behrouzi islamic azad university, science and research branch,tehran, iran.سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) saeid bouzari department of biology ,pasteur institute of iran, tehran, iran.سازمان اصلی تایید شده: انستیتو پاستور ایران (pasteur institute of iran) seyed davar siadat department of microbilogy,pasteur institute of iran, tehran, iran.سازمان اصلی تایید شده: انستیتو پاستور ایران (pasteur institute of iran) shiva irani islamic azad university, science and research branch,tehran, iran.سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch)

neisseria meningitidis is a major causative agent of bacterial septicemia and meningitis in humans. currently, there are no vaccines to prevent disease caused by strains of n.meningitidis serogroup b. the class 1 outer membrane protein (omp) has been named pora which is a cation selective transmembrane protein of 45 kda that forms trimeric pore in the meningococcal outer membrane. pora from ser...

Journal: :Diseases of aquatic organisms 2010
Shuang-Hu Cai Shao-Yun Yaol Yi-Shan Lu Zao-He Wu Ji-Chang Jian Bei Wang

The outer membrane proteins (OMPs) of the marine aquatic animal pathogen Vibrio alginolyticus play an important role in the virulence of the bacterium and are potential candidates for vaccine development. In this study, the major 35.6 kDa OMP of V. alginolyticus was isolated by gel excision from the crude OMP fraction from V. alginolyticus. The sequence of the first 27 amino acid residues from ...

Journal: :Journal of bacteriology 2004
Seung-Chul Baik Kyung-Mi Kim Su-Min Song Do-Su Kim Jin-Su Jun Seung-Gyu Lee Jae-Young Song Jeong-Uck Park Hyung-Lyun Kang Woo-Kon Lee Myung-Je Cho Hee-Shang Youn Gyung-Hyuck Ko Kwang-Ho Rhee

Helicobacter pylori causes gastroduodenal disease, which is mediated in part by its outer membrane proteins (OMPs). To identify OMPs of H. pylori strain 26695, we performed a proteomic analysis. A sarcosine-insoluble outer membrane fraction was resolved by two-dimensional electrophoresis with immobilized pH gradient strips. Most of the protein spots, with molecular masses of 10 to 100 kDa, were...

2015
Wanling Song Harsha Bajaj Chady Nasrallah Hualiang Jiang Mathias Winterhalter Jacques-Philippe Colletier Yechun Xu

Bacterial porins are water-filled β-barrel channels that allow translocation of solutes across the outer membrane. They feature a constriction zone, contributed by the plunging of extracellular loop 3 (L3) into the channel lumen. Porins are generally in the open state, but undergo gating in response to external voltages. To date the underlying mechanism is unclear. Here we report results from m...

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