Results 21 to 30 of about 28,145 (267)
مجلة مركز بحوث التقنيات الاحيائية, 2010 Approximately, 50% of the dry mass of the outer membrane of gram-negative bacteria consists of proteins, and more than 20 immunochemically distinct proteins (termed outer membrane proteins [OMPs]) have been identified.
Amir H. Al–Shammary +2 more
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Frontiers in Cellular and Infection Microbiology, 2022 Resistance to ceftolozane/tazobactam (C/T) in Pseudomonas aeruginosa is a health concern. In this study, we conducted a whole-genome-based molecular characterization to correlate resistance patterns and β-lactamases with C/T resistance among multi-drug ...
Ibrahim Bitar +7 more
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Porin from Rhodopseudomonas sphaeroides [PDF]
Journal of Bacteriology, 1984 A protein homooligomer was purified from both the cell envelope fractions and the saline extracts of Rhodopseudomonas sphaeroides cells. This oligomer exhibited strong porin activity when reconstituted into proteoliposomes with egg phosphatidylcholine. In the saline extracts of both chemotrophically and phototrophically grown cells, the porin oligomer ...
J, Weckesser, L S, Zalman, H, Nikaido
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Antibiotics, 2021 The aim of this work was to analyze outer membrane porin-encoding genes (ompK35 and ompK36) in a collection of OXA-48 producing Klebsiella pneumoniae, to assess the effect of porin alterations on the susceptibility to ceftazidime/avibactam, and to ...
Pilar Lumbreras-Iglesias +4 more
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Solute channels of the outer membrane: from bacteria to chloroplasts [PDF]
, 2007 Chloroplasts, unique organelles of plants, originated from endosymbiosis of an ancestor of today's cyanobacteria with a mitochondria-containing host cell. It is assumed that the outer envelope membrane, which delimits the chloroplast from the surrounding
Aljamal J.A. +8 more
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Инфекция и иммунитет, 2021 Here we provide molecular and genetic characteristics of the Klebsiella pneumoniae KP254 clinical strain belonging to clonal group 23 based on the genome-wide sequencing data.
A. E. Alekseeva +2 more
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Porins of Brucella species [PDF]
Infection and Immunity, 1984 The outer membrane of Brucella species contains two major proteins, denoted as group 2 and group 3 proteins (Verstreate et al., Infect. Immun. 35:979-989, 1982). We reconstituted proteoliposomes from the purified proteins and egg phosphatidylcholine and showed that group 2 proteins, but not a group 3 protein, had the porin activity. The influx rates of
J T, Douglas +4 more
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Single-channel measurements of an N-acetylneuraminic acid-inducible outer membrane channel in Escherichia coli [PDF]
, 2012 NanC is an Escherichia coli outer membrane protein involved in sialic acid (Neu5Ac, i.e., N-acetylneuraminic acid) uptake. Expression of the NanC gene is induced and controlled by Neu5Ac. The transport mechanism of Neu5Ac is not known.
Eisenberg, Bob +4 more
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Porin fromThiobacillus versutus [PDF]
FEMS Microbiology Letters, 1989 The porin of Thiobacillus versutus IFO 14567 was isolated by extraction of cell-envelopes with sodium dodecyl sulfate. It exhibited strong porin-activity after reconstitution into artificial lipid bilayer membranes. The diameter of the pore was determined as 1.6 nm, with a weak selectivity for cations being observed. The porin migrated as a single band
D, Woitzik +3 more
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Biophysical Effects Of Ion Concenteration On The Affinity Between Nanopore, OmpF Lumen and Passing Nucleotide [PDF]
, 2010 OmpF an outer-membrane porin channel of _E. Coli_ posses beta-barrel structure, whose conductivity and gating phenomena are affected by changes in pH, salt concentration and so on. The distribution of amino acids in OmpF induces a non homologous electric
Hamid Mobasheri, Saeid Hadi
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