Results 51 to 60 of about 42,525 (258)

Reconstructing the free-energy landscape of Met-enkephalin using dihedral Principal Component Analysis and Well-tempered Metadynamics

open access: yes, 2012
Well-Tempered Metadynamics (WTmetaD) is an efficient method to enhance the reconstruction of the free-energy surface of proteins. WTmetaD guarantees a faster convergence in the long time limit in comparison with the standard metadynamics.
François Sicard   +2 more
core   +3 more sources

Dopamine-D1 and δ-opioid receptors co-exist in rat striatal neurons [PDF]

open access: yes, 2006
Cocaine’s enhancement of dopaminergic neurotransmission in the mesolimbic pathway plays a critical role in the initial reinforcing properties of this drug. However, other neurotransmitter systems are also integral to the addiction process.
Ambrose-Lanci, L. M.   +3 more
core   +2 more sources

Deciphering the skeletal interoceptive circuitry to control bone homeostasis

open access: yesBMEMat, EarlyView.
This review introduces the skeletal interoceptive circuitry, covering the ascending signals from bone tissues to the brain (sensors), the central neural circuits that integrate this information and dispatch commands (CPU), and the descending pathways that regulate bone homeostasis (effectors).
Yefeng Wu   +7 more
wiley   +1 more source

Effective Sampling in the Configurational Space by the Multicanonical-Multioverlap Algorithm

open access: yes, 2006
We propose a new generalized-ensemble algorithm, which we refer to as the multicanonical-multioverlap algorithm. By utilizing a non-Boltzmann weight factor, this method realizes a random walk in the multi-dimensional, energy-overlap space and explores ...
B. A. Berg   +5 more
core   +1 more source

Piper auritum (Kunth) Fungal Endophytes: A Source of Metabolites to Inhibit the Formation of Advanced Glycation End Products

open access: yesChemistry &Biodiversity, EarlyView.
Endophytic fungi of P. auritum were evaluated for their ability to produce inhibitors of formation of advanced glycation end products (AGEs). Neopestalotiopsis sp. H2 and Diaporthe sp. H5 extracts were the most active. So, we performed their chemical profiling by untargeted and phenolics‐targeted metabolomic approaches to identify the potential ...
Lory Sthephany Rochín‐Hernández   +3 more
wiley   +1 more source

Biased Metropolis Sampling for Rugged Free Energy Landscapes [PDF]

open access: yes, 2003
Metropolis simulations of all-atom models of peptides (i.e. small proteins) are considered. Inspired by the funnel picture of Bryngelson and Wolyness, a transformation of the updating probabilities of the dihedral angles is defined, which uses ...
Berg, Bernd A.
core   +3 more sources

3,4,5‐Trifluorophenyldiazonium–A Unique Radical Source for the Visible Light Induced, Catalyst‐Free Arylation of Tyrosine Residues in Peptides

open access: yesChemistry – A European Journal, EarlyView.
By exploiting the unique properties of 3,4,5‐trifluorophenyldiazonium salts in combination with phenols, radical arylations of tyrosine units in peptide substrates could for the first time be achieved under highly attractive conditions requiring only visible light irradiation and neither photocatalysts nor other additives, pre‐functionalization, or ...
Meret K. Kuschow   +5 more
wiley   +1 more source

Actions of D-Ala2-D-Leu5-enkephalin and dynorphin A (1–17) on neocortical neurons in vitro [PDF]

open access: yes, 1984
Intracellular recordings were made from neocortical neurons in vitro. Application of D-Ala2-D-Leu5-enkephalin (DADL) by different methods produced a decrease in EPSP amplitude and in the amplitude of L-glutamate-induced depolarizations without changes in
B Sutor   +11 more
core   +1 more source

Synthesis and Biological Evaluation of Bicyclic Pyrazolines with Promising Antimicrobial Activities

open access: yesChemMedChem, EarlyView.
Continuous flow technology is exploited for the generation of bicyclic pyrazolines via photo‐click reactions. These heterocyclic species contain a valuable 3D scaffold along with a polar succinimide moiety. Subsequent antimicrobial testing reveals that halogenated moieties such as chlorine atoms and trifluoromethoxy groups enhance the potency of these ...
Debora Caviglia   +4 more
wiley   +1 more source

The Enhancing Effects of Peptidase Inhibitors on the Antinociceptive Action of [Met5]Enkephalin-Arg6-Phe7 in Rats

open access: yesJournal of Pharmacological Sciences, 2007
Previous in vitro studies have shown that the degradation of [Met5]enkephalin-Arg6-Phe7 during incubation with cerebral membrane preparations is largely prevented by a mixture of three peptidase inhibitors: amastatin, captopril, and phosphoramidon.
Shigeru Takahashi   +5 more
doaj  

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