Results 51 to 60 of about 138,806 (299)

Inhibition of MDR1 does not sensitize primitive chronic myeloid leukemia CD34⁺ cells to imatinib [PDF]

, 2009
<p><b>Objective:</b> To investigate the interaction of imatinib mesylate (IM) with the clinically relevant adenosine triphosphate-binding cassette efflux transporter MDR1 (ABCB1) in cells from patients with chronic myeloid leukemia (CML)
Hatziieremia, S., Holyoake, T.L., Jordanides, N.E., Jorgensen, H.G., Mountford, J.C.   +4 more
core   +1 more source

Evolutionarily divergent DUF4465 domains have a common vitamin B12‐binding function

FEBS Open Bio, EarlyView.
We show that DUF4465 family proteins, widespread across bacteria from gut microbiomes, hydrothermal vents, and soil, share a common vitamin B12‐binding function. These augmented β‐jellyroll proteins bind vitamin B12 via extended loops. Our findings establish sequence‐diverse DUF4465 proteins as a widespread class of B12‐binding proteins, highlighting ...
Charlea Clarke, Michal Banasik, Rokas Juodeikis, Martin J. Warren, Richard W. Pickersgill   +4 more
wiley   +1 more source

The Allosteric Regulatory Mechanism of the Escherichia coli MetNI Methionine ATP Binding Cassette (ABC) Transporter [PDF]

, 2015
The MetNI methionine importer of Escherichia coli, an ATP Binding Cassette (ABC) transporter, uses the energy of ATP binding and hydrolysis to catalyze the high affinity uptake of D- and L-methionine.
Rees, Douglas C., Yang, Janet G.
core   +2 more sources

Identifying transcription factors controlling the basal expression of human MRP4 highlights a substantial role for Sp1

FEBS Open Bio, EarlyView.
The MRP4 transporter exports several drugs and signaling molecules. Here, we identified key promoter elements regulating basal MRP4 expression. Using reporter assays, we defined a conserved region with essential Sp1 and contributory Ets sites, which controlled basal MRP4 expression.
Debora Singer, Angelique Kragl, Katrin Ziems, Juliane Glaubitz, Sophie Grammbauer, Susanne Hildebrandt, Mladen V. Tzvetkov, Gabriele Jedlitschky   +7 more
wiley   +1 more source

Lysimachia foenum-graecum Herba Extract, a Novel Biopesticide, Inhibits ABC Transporter Genes and Mycelial Growth of Magnaporthe oryzae

The Plant Pathology Journal, 2016
To identify a novel biopesticide controlling rice blast disease caused by Magnaporthe oryzae, 700 plant extracts were evaluated for their inhibitory effects on mycelial growth of M. oryzae. The L. foenum-graecum Herba extract showed the lowest inhibition
Youngjin Lee
doaj   +1 more source

Transition metal ions at the crossroads of mucosal immunity and microbial pathogenesis. [PDF]

, 2014
Transition metal ions are essential micronutrients for all living organisms. In mammals, these ions are often protein-bound and sequestered within cells, limiting their availability to microbes. Moreover, in response to infection, mammalian hosts further
Diaz-Ochoa, Vladimir E, Jellbauer, Stefan, Klaus, Suzi, Raffatellu, Manuela   +3 more
core   +2 more sources

Lipopolysaccharide uptake is augmented in lipopolysaccharide‐tolerant mouse macrophage‐like cells via increased CD14 expression

FEBS Open Bio, EarlyView.
In normal (nontolerant) cells, CD14 is crucial for both LPS uptake and LPS signaling. In LPS‐tolerant cells, in which LPS‐induced TNF‐α and IFN‐β production is suppressed, there is a dramatic increase in surface CD14 expression. The overexpressed CD14 in LPS‐tolerant cells is responsible for the enhanced LPS uptake without inducing pro‐inflammatory ...
Saeka Nishihara, Takayuki Manabe, Mika Jouta, Kiyoshi Kawasaki   +3 more
wiley   +1 more source

Structure of MlaFB uncovers novel mechanisms of ABC transporter regulation

eLife, 2020
ABC transporters facilitate the movement of diverse molecules across cellular membranes, but how their activity is regulated post-translationally is not well understood. Here we report the crystal structure of MlaFB from E.
Ljuvica R Kolich, Ya-Ting Chang, Nicolas Coudray, Sabrina I Giacometti, Mark R MacRae, Georgia L Isom, Evelyn M Teran, Gira Bhabha, Damian C Ekiert   +8 more
doaj   +1 more source

Membrane Topology of the Lactococcal Bacteriocin ATP-binding Cassette Transporter Protein LcnC. Involvement of LcnC in Lactococcin A Maturation [PDF]

, 1999
Many non-lantibiotic bacteriocins of lactic acid bacteria are produced as precursors with N-terminal leader peptides different from those present in preproteins exported by the general sec-dependent (type II) secretion pathway. These bacteriocins utilize
Axelsson, Bardwell, Birnboim, Boyd, Calamia, Casadaban, Chopin, Christian M. Franke, Danielsen, Dassa, Diep, Dinh, Dower, Ehrmann, Eisenberg, Fath, Franke, Gasson, Gerard Venema, Gilmore, Higgins, Holo, Hwang, Håvarstein, Jan Kok, Jan Tiemersma, Kast, Klein, Kok, Kuipers, Kyhse-Anderson, Kyte, Laemmli, Loo, Manoil, Millan, Miller, Newton, Pearce, Prinz, Quadri, Rao, Rince, Rottlander, Sambrook, Schägger, Simon, Sipos, Stoddard, Tagg, Terzaghi, Van Belkum, Van de Guchte, Venema, Venema, Venema, Vieira, Von Heijne, Wu, Yanisch-Perron, Zhang   +60 more
core   +1 more source

Plant ABC transporters

Biochimica et Biophysica Acta (BBA) - Biomembranes, 2000
The ATP binding cassette (ABC) superfamily is a large, ubiquitous and diverse group of proteins, most of which mediate transport across biological membranes. ABC transporters have been shown to function not only as ATP-dependent pumps, but also as ion channels and channel regulators.
openaire   +2 more sources