Results 101 to 110 of about 155,755 (365)

Serine- and Threonine/Valine-Dependent Activation of PDK and Tor Orthologs Converge on Sch9 to Promote Aging

open access: yesPLoS Genetics, 2014
Dietary restriction extends longevity in organisms ranging from bacteria to mice and protects primates from a variety of diseases, but the contribution of each dietary component to aging is poorly understood. Here we demonstrate that glucose and specific
M. Mirisola   +5 more
semanticscholar   +1 more source

Identification of an Activity Selector for the Nitroso‐Forming Activity in Bacterial Type‐III Copper Enzymes

open access: yesAngewandte Chemie International Edition, Accepted Article.
O‐aminophenol oxidases, a specialized subclass of type‐III copper proteins, play a crucial role in the biosynthesis of bioactive nitrosophenols which display antiretroviral and blood cholesterol lowering activity. Another related subclass of type‐III copper proteins, tyrosinases, closely resemble o‐aminophenol oxidases both structurally and ...
Hoa Le Xuan, Felix Panis, Annette Rompel
wiley   +1 more source

Chemical composition of kabuli and desi chickpea (Cicer arietinum L.) cultivars grown in Xinjiang, China

open access: yesFood Science &Nutrition, Volume 11, Issue 1, Page 236-248, January 2023., 2023
Chemical compositions such as protein, fat, ash, moisture, starch, vitamin B1 and mineral, as well as amino acids and fatty acids were determined in kabuli and desi chickpea species. Forty‐six types of flavonoids in Muying‐1 chickpea were analyzed with UPLC‐QqQ‐MS method.
Shiqi Xiao   +3 more
wiley   +1 more source

Speex: A Free Codec For Free Speech [PDF]

open access: yesarXiv, 2016
The Speex project has been started in 2002 to address the need for a free, open-source speech codec. Speex is based on the Code Excited Linear Prediction (CELP) algorithm and, unlike the previously existing Vorbis codec, is optimised for transmitting speech for low latency communication over an unreliable packet network. This paper presents an overview
arxiv  

A New Robust Frequency Domain Echo Canceller With Closed-Loop Learning Rate Adaptation [PDF]

open access: yes, 2016
One of the main difficulties in echo cancellation is the fact that the learning rate needs to vary according to conditions such as double-talk and echo path change. Several methods have been proposed to vary the learning. In this paper we propose a new closed-loop method where the learning rate is proportional to a misalignment parameter, which is in ...
arxiv   +1 more source

Valine tRNA levels and availability regulate complex I assembly in leukaemia

open access: yesNature, 2021
Palaniraja Thandapani   +11 more
semanticscholar   +1 more source

LC-MS/MS screening strategy for unknown adducts to N-terminal valine in hemoglobin applied to smokers and nonsmokers.

open access: yesChemical Research in Toxicology, 2014
Electrophilically reactive compounds have the ability to form adducts with nucleophilic sites in DNA and proteins, constituting a risk for toxic effects.
Henrik Carlsson   +3 more
semanticscholar   +1 more source

Ruthenium Catalyzed ortho‐Arylation Reaction of Benzoic Acids with Arylthianthrenium Salts

open access: yesAngewandte Chemie International Edition, Accepted Article.
Arylthianthrenium salts have become key intermediates for late‐stage functionalizations of drug‐like molecules. Ruthenium‐phosphine catalysts are now shown to enable their use as aryl sources in high‐yielding ortho‐C–H arylations of benzoic acids. The arylthianthrenium salts are converted chemo‐selectively, leaving aryl halides and boronates untouched.
Kaiping Wang   +9 more
wiley   +1 more source

Isolation and characterization of antioxidant peptides from oyster (Crassostrea rivularis) protein enzymatic hydrolysates

open access: yesFood Science &Nutrition, Volume 11, Issue 1, Page 261-273, January 2023., 2023
Five obtained peptides exhibited high radical scavenging activities in the following order: F5 > F3 > F1 > F2 > F4.; F5 has the highest activities for DPPH‐IC50 was 21.75 μg/mL, hydroxyl‐IC50 was 18.75 μg/mL, and Superoxide‐IC50 was 11.00 μg/mL and the reducing power was 2.54 OD700.; F5 had the highest antioxidant activity and not only prevented the ...
Hui Huang   +9 more
wiley   +1 more source

Phenylalanine and valine differentially stimulate milk protein synthetic and energy-mediated pathway in immortalized bovine mammary epithelial cells

open access: yesJournal of Animal Science and Technology, 2020
Studies on promoting milk protein yield by supplementation of amino acids have been globally conducted. Nevertheless, there is a lack of knowledge of what pathways affected by individual amino acid in mammary ...
Jungeun Kim   +5 more
doaj   +1 more source

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