Results 31 to 40 of about 84,847 (305)

Preparation of Isotope-labeled Dihydroneopterin 3'-Triphosphate with High Specific Activity

open access: yesPteridines, 1990
Isotope-labeled dihydroneopterin 3'-triphosphate with 3H at positions C-1' and C-2', respectively, has been prepared from isotope-labeled glucose as starting material. Glucose was first converted enzymatically to ribose 5-phosphate.
Katzenmeier Gerd   +4 more
doaj   +1 more source

DNA sensor cGAS-mediated immune recognition

open access: yesProtein & Cell, 2016
The host takes use of pattern recognition receptors (PRRs) to defend against pathogen invasion or cellular damage. Among microorganism-associated molecular patterns detected by host PRRs, nucleic acids derived from bacteria or viruses are tightly ...
Pengyan Xia   +4 more
doaj   +1 more source

The T2238C human atrial natriuretic peptide molecular variant and the risk of cardiovascular diseases [PDF]

open access: yes, 2018
Atrial natriuretic peptide (ANP) is a cardiac hormone which plays important functions to maintain cardio-renal homeostasis. The peptide structure is highly conserved among species. However, a few gene variants are known to fall within the human ANP gene.
Bianchi, Franca   +5 more
core   +2 more sources

Gαs slow conformational transition upon GTP binding and a novel Gαs regulator

open access: yesiScience, 2023
Summary: G proteins are major signaling partners for G protein-coupled receptors (GPCRs). Although stepwise structural changes during GPCR–G protein complex formation and guanosine diphosphate (GDP) release have been reported, no information is available
Donghoon Ahn   +12 more
doaj   +1 more source

The chloroplast import receptor Toc34 functions as preprotein-regulated GTPase [PDF]

open access: yes, 2002
Toc34 is a protein of the chloroplast outer envelope membrane that acts as receptor for preproteins containing a transit sequence. The recognition of preproteins by Toc34 is regulated by GTP binding and phosphorylation.
Hörth, P.   +5 more
core   +1 more source

Dynamics of Microtubule Growth and Catastrophe [PDF]

open access: yes, 2007
We investigate a simple model of microtubule dynamics in which a microtubule evolves by: (i) attachment of guanosine triphosphate (GTP) to its end at rate lambda, (ii) GTP converting irreversibly to guanosine diphosphate (GDP) at rate 1, and (iii ...
Antal, T.   +4 more
core   +1 more source

RhoB regulates cell migration through altered focal adhesion dynamics [PDF]

open access: yesOpen Biology, 2012
The Rho GTPase RhoB has been shown to affect cell migration, but how it does this is not clear. Here we show that cells depleted of RhoB by RNAi are rounded and have defects in Rac-mediated spreading and lamellipodium extension, although they have active
Francisco M. Vega   +4 more
doaj   +1 more source

Role of ARHGEF3 as a GEF and mTORC2 Regulator

open access: yesFrontiers in Cell and Developmental Biology, 2022
Guanine nucleotide exchange factors (GEFs) activate GTPases by stimulating the release of guanosine diphosphate to permit the binding of guanosine triphosphate.
Sana Abdul Khaliq   +5 more
doaj   +1 more source

Mutant mitochondrial elongation factor G1 and combined oxidative phosphorylation deficiency [PDF]

open access: yes, 2004
Although most components of the mitochondrial translation apparatus are encoded by nuclear genes, all known molecular defects associated with impaired mitochondrial translation are due to mutations in mitochondrial DNA.
Antonicka, H   +10 more
core   +4 more sources

Dinucleoside polyphosphates : newly detected uraemic compounds with an impact on leucocyte oxidative burst [PDF]

open access: yes, 2009
Background. Dinucleoside polyphosphates (NpnN) have pathophysiologic roles in cardiovascular disease and are newly detected uraemic retention solutes. They were retrieved in human plasma, tissues and cells.
Dhondt, Annemieke   +5 more
core   +1 more source

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