Results 81 to 90 of about 16,618,960 (281)

G-quadruplex-binding proteins and their functional relevance in human cancer cells

open access: yes, 2015
Background: DNA can adopt a variety of different conformations based on particular sequence motifs and interactions with various proteins. Guanine-rich motifs can form non-canonical structures known as G-quadruplexes. The existence of such structures in
Bruno Pagano
core  

Emerging experimental and computational methods for studying redox‐regulated structural transitions

open access: yesFEBS Letters, EarlyView.
Redox reactions can reshape proteins and alter how they behave in cells, with important consequences for health and disease. This review explores emerging experimental and computational approaches for discovering these redox‐sensitive protein switches, revealing their structural effects, and predicting their behavior, opening new opportunities to ...
Tasneem Rass   +2 more
wiley   +1 more source

Molecular analysis of plant G proteins.

open access: yes, 1998
Molecular analysis of plant G ...
John Frederick III. Marsh (7959731)
core   +3 more sources

Translophagy—A potential link between autophagy impairment and translational errors

open access: yesFEBS Letters, EarlyView.
Neurodegenerative diseases are characterised by the accumulation of abnormal proteins and protein aggregates, but their origin often remains unknown. We propose that selective autophagy removes damaged protein‐making machinery, preventing errors during protein synthesis.
Mykola V. Korolchuk   +11 more
wiley   +1 more source

Heterotrimeric G proteins in heart disease

open access: yes, 2000
Guanine nucleotide binding proteins (G proteins) are largely grouped into three classes: heterotrimeric G proteins, ras-like or small molecular weight GTP binding proteins, and others like Gh.
Ichiro Kouchi   +3 more
core   +1 more source

Interaction of Protease-Activated Receptor 2 with G Proteins and Beta-Arrestin 1 Studied by Bioluminescence Resonance Energy Transfer

open access: yesFrontiers in Endocrinology, 2013
G protein-coupled receptors (GPCRs) are well recognized as being able to activate several signaling pathways through the activation of different G proteins as well as other signaling proteins such as beta-arrestins.
Mohammed Akli eAyoub   +1 more
doaj   +1 more source

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

open access: yesFEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell   +2 more
wiley   +1 more source

Functional coupling of the human dopamine D-2 receptor with G alpha(i1), G alpha(i2), G alpha(i3) and G alpha(o) G proteins: evidence for agonist regulation of G protein selectivity

open access: yes, 2003
1 The human dopamine D-2long (D-2L) receptor was expressed with four different G proteins in Sf9 cells using the baculovirus expression system. When co-expressed with G(i)/G(o) G proteins (G(i1)alpha, G(i2)alpha, G(i3)alpha, or G(o)alpha, plus Gbeta(1 ...
Gazi, L.   +2 more
core   +1 more source

Structural and biochemical analysis of a B12 superbinder

open access: yesFEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices   +3 more
wiley   +1 more source

Arabidopsis G‐protein interactome reveals connections to cell wall carbohydrates and morphogenesis

open access: yesMolecular Systems Biology, 2011
The heterotrimeric G‐protein complex is minimally composed of Gα, Gβ, and Gγ subunits. In the classic scenario, the G‐protein complex is the nexus in signaling from the plasma membrane, where the heterotrimeric G‐protein associates with heptahelical G ...
Karsten Klopffleisch   +35 more
doaj   +1 more source

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