Results 71 to 80 of about 12,287 (215)

The Fusobacterium nucleatum porin FomA possesses the general topology of the non-specific porins [PDF]

Microbiology, 2000
FomA is a major non-specific porin of Fusobacterium nucleatum with no sequence similarity to other known porins. According to the topology model, the protein consists of 16 transmembrane beta-strands, connected by eight surface-exposed loops and seven periplasmic turns. In this study, the insertion mutagenesis approach was applied to probe the topology
Puntervoll, P., Kleivdal, H., Dahl, K.O., Bitter, W., Tommassen, J.P.M., Jensen, H.B.   +5 more
openaire   +3 more sources

Femtosecond Spectroscopy of Au Hot-Electron Injection into TiO₂: Evidence for Au/TiO₂ Plasmon Photocatalysis by Bactericidal Au Ions and Related Phenomena

Nanomaterials, 2019
In the present work, we provide evidence for visible light irradiation of the Au/TiO2 nanoparticles’ surface plasmon resonance band (SPR) leading to electron injection from the Au nanoparticles to the conduction band of TiO2.
Marina Radzig, Olga Koksharova, Inessa Khmel, Vladimir Ivanov, Khursand Yorov, John Kiwi, Sami Rtimi, Elina Tastekova, Arseny Aybush, Victor Nadtochenko   +9 more
doaj   +1 more source

Getting Drugs through Small Pores: Exploiting the Porins Pathway in Pseudomonas aeruginosa.

ACS Infectious Diseases, 2018
Understanding molecular properties of outer membrane channels of Gram-negative bacteria is of fundamental significance as they are the entry point of polar antibiotics into bacteria.
Susruta Samanta, I. Bodrenko, S. Acosta-Gutiérrez, Tommaso D’Agostino, M. Pathania, Ishan Ghai, C. Schleberger, D. Bumann, R. Wagner, M. Winterhalter, B. van den Berg, M. Ceccarelli   +11 more
semanticscholar   +1 more source

Voltage gating in porin channels [PDF]

FEBS Letters, 1987
Data from experiments in which porin channels are reconstituted into planar bilayer membranes are reviewed for their relevance to porin channel gating in vivo. Contradictory evidence concerning voltage gating indicates that the different results may stem from the variety of purification techniques employed.
openaire   +2 more sources

The Oligogalacturonate-specific Porin KdgM of Erwinia chrysanthemi Belongs to a New Porin Family [PDF]

Journal of Biological Chemistry, 2002
The phytopathogenic Gram-negative bacteria Erwinia chrysanthemi secretes pectinases, which are able to degrade the pectic polymers of plant cell walls, and uses the degradation products as a carbon source for growth. We characterized a major outer membrane protein, KdgM, whose synthesis is strongly induced in the presence of pectic derivatives.
Blot, Nicolas, Berrier, Catherine, Hugouvieux-Cotte-Pattat, Nicole, Ghazi, Alexandre, Condemine, Guy   +4 more
openaire   +2 more sources

Structure and Dynamics of Porin Loops in Asymmetric Outer Membranes of E. coli

Chemistry – A European Journal, EarlyView.
What are loops of membrane proteins doing within the oligosaccharide coat of cells? This structurally unexplored space is studied by solid‐state NMR, with the outer membrane protein G (OmpG) embedded in asymmetric E. coli outer membrane (OM) vesicles as a paradigmatic example.
Morgane Adélaïde, Jayasubba Reddy Yarava, Florian Lindemann, Massilia Abbas, Nils Cremer, Lisa Gerland, Matthias Hiller, Barth van Rossum, Dirk Linke, Alexander B. Barnes, Edward P. Saliba, Özkan Yildiz, Werner Kühlbrandt, Hartmut Oschkinat   +13 more
wiley   +1 more source

Thermomechanical Response of a Representative Porin for Biomimetics [PDF]

ACS Omega, 2018
The thermomechanical response of Omp2a, a representative porin used for the fabrication of smart biomimetic nanomembranes, has been characterized using microcantilever technology and compared with standard proteins. For this purpose, thermally induced transitions involving the conversion of stable trimers to bigger aggregates, local reorganizations ...
Lopes Rodrigues, Maximilien, Puiggalí Jou, Anna, Martí Ballesté, Didac, Valle Mendoza, Luis Javier del, Michaux, Catherine Anne Gisèle, Perpète, Eric A., Alemán Llansó, Carlos   +6 more
openaire   +4 more sources

Interpretation of Key Updates in the 36th Edition of Clinical and Laboratory Standards Institute M100 Standard

iLABMED, EarlyView.
ABSTRACT The Clinical and Laboratory Standards Institute M100 document serves as a cornerstone standard for clinical microbiology laboratories in China. Maintaining the scientific rigor of its predecessors, the 36th edition incorporates updated epidemiological cutoff values, pharmacokinetic/pharmacodynamic data, and clinical efficacy evidence to revise
Kanghong Xu, Qi Wang, Hui Wang
wiley   +1 more source

Interplay between porin deficiency, fitness, and virulence in carbapenem-non-susceptible Pseudomonas aeruginosa and Enterobacteriaceae.

PLoS Pathogens
The increasing resistance of Gram-negative bacteria to last resort antibiotics, such as carbapenems, is particularly of concern as it is a significant cause of global health threat.
Hedi Mammeri, Youssouf Sereme, Eya Toumi, Hélène Faury, David Skurnik   +4 more
doaj   +1 more source

Structure and function of the porin channel

Kidney International, 1995
The outer membrane bilayer of gram-negative bacteria, which encapsulates completely the plasma membrane, seems to act as a protection system against noxious macromolecules like proteases and bile-salt micelles [1]. The external monolayer is composed of lipopolysaccharides with a variable carbohydrate composition. Long oligosaccharide chains protect the
Welte, Wolfram, Diederichs, Kay, Nestel, Uwe, Wacker, Thomas   +3 more
openaire   +3 more sources