Results 101 to 110 of about 165,902 (383)

Shannon Capacity of Signal Transduction for Multiple Independent Receptors [PDF]

open access: yesarXiv, 2016
Cyclic adenosine monophosphate (cAMP) is considered a model system for signal transduction, the mechanism by which cells exchange chemical messages. Our previous work calculated the Shannon capacity of a single cAMP receptor; however, a typical cell may have thousands of receptors operating in parallel.
arxiv  

The effect of splanchnic viscera removal upon canine liver regeneration [PDF]

open access: yes, 1978
The influence of portal blood factors on canine liver regeneration was studied with graded nonhepatic splanchnic evisceration, coupled with 44 and 72 per cent hepatectomies. In one type of experiment, the pancreas was retained while the rest of the intra-
Benichou, J   +4 more
core  

HDAC6 and USP9X Control Glutamine Metabolism by Stabilizing GS to Promote Glioblastoma Tumorigenesis

open access: yesAdvanced Science, EarlyView.
Glioblastoma (GBM) growth relies on glutamine synthetase (GS), which is stabilized by histone deacetylase 6 (HDAC6) and deubiquitinated by ubiquitin‐specific peptidase 9, X‐linked (USP9X). HDAC6 promotes GS deacetylation, while USP9X removes its K48‐linked polyubiquitination, enhancing GS stability.
Go Woon Kim   +9 more
wiley   +1 more source

Systematic review on spheroids from adipose‐derived stem cells: Spontaneous or artefact state?

open access: yesJournal of Cellular Physiology, Volume 237, Issue 12, Page 4397-4411, December 2022., 2022
Our proposed model of spheroid isolation from liposuction fat. The tissue disintegration releases the pre‐existing spheroids as intact structures. This could be the ideal technique to culture cells in suspension because it avoids a preliminary adhesion isolation step and thus an upstream cell selection.
Anna Barbara Di Stefano   +5 more
wiley   +1 more source

Amino Acid‐Sensing Neurons in the Anterior Piriform Cortex Control Brown Adipose Tissue Thermogenesis

open access: yesAdvanced Science, EarlyView.
This study identifies a class of amino acid‐sensing neurons, APCCRH neurons, which regulate BAT thermogenesis. Leucine deficiency alters intrinsic excitability through GCN2 signaling pathway, activating APCCRH neurons, which in turn regulate BAT thermogenesis via projections to the lateral hypothalamus.
Peixiang Luo   +15 more
wiley   +1 more source

Equation-of-motion MLCCSD and CCSD-in-HF oscillator strengths and their application to core excitations [PDF]

open access: yesarXiv, 2020
We present an implementation of equation-of-motion oscillator strengths for the multilevel CCSD (MLCCSD) model where CCS is used as the lower level method (CCS/CCSD). In this model, the double excitations of the cluster operator are restricted to an active orbital space, whereas the single excitations are unrestricted.
arxiv  

Experimental approaches to understanding the role of protein phosphorylation in the regulation of neuronal function [PDF]

open access: yes, 1983
Studies by Earl Sutherland and his colleagues on hormonal regulation of the breakdown of glycogen in liver resulted in the discovery that the first step in the action of many hormones is to increase the synthesis of cAMP by activating adenylate cyclase ...
Kennedy, Mary B.
core  

Metabolic engineering of the purine biosynthetic pathway in Corynebacterium glutamicum results in increased intracellular pool sizes of IMP and hypoxanthine [PDF]

open access: yes, 2012
Background: Purine nucleotides exhibit various functions in cellular metabolism. Besides serving as building blocks for nucleic acid synthesis, they participate in signaling pathways and energy metabolism.
Barduhn, Tobias   +5 more
core   +1 more source

Cyclic AMP Receptor Protein from Yeast Mitochondria [PDF]

open access: yes, 1985
We have identified and characterized a cyclic AMP receptor protein in mitochondria of the yeast Saccharomyces cerevisiae. The binding is specific for cyclic nucleotides, particularly for cyclic AMP which is bound with high affinity (Kd of 10(-9) M) at 1 ...
Bandlow, Wolfhard   +2 more
core  

Increased Adenine Nucleotide Degradation in Skeletal Muscle Atrophy [PDF]

open access: yes, 2019
Adenine nucleotides (AdNs: ATP, ADP, AMP) are essential biological compounds that facilitate many necessary cellular processes by providing chemical energy, mediating intracellular signaling, and regulating protein metabolism and solubilization.
Brault, Jeffrey J.   +2 more
core   +1 more source

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