Results 51 to 60 of about 34,511,928 (256)

Effect of oxygen tension on the amino acid utilisation of human embryonic stem cells

, 2014
Background/aims: human embryonic stem cells (hESCs) are a potential source of cells for treatment of many degenerative diseases, but in culture have a propensity to spontaneously differentiate, possibly due to suboptimal conditions. Culture at low oxygen
Christensen, David R., David R. Christensen, Calder, Philip C., Houghton, Franchesca D., Philip C. Calder, Franchesca D. Houghton   +5 more
core   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Septin 9 PB domains coordinate centrosome positioning and microtubule acetylation to control epithelial polarity

FEBS Letters, EarlyView.
Septin 9 polybasic domains couple phosphoinositide‐rich membrane binding to centrosome positioning, Golgi organization, and microtubule acetylation to control epithelial polarity. Their loss disrupts this axis, causing centrosome mispositioning, Golgi fragmentation, reduced microtubule acetylation, and polarity inversion via upregulation of the ...
Ting ting Cai, Mohyeddine Omrane, Nassima Benzoubir, Didier Samuel, Ama Gassama‐Diagne   +4 more
wiley   +1 more source

Wheat amino acid transporters highly expressed in grain cells regulate amino acid accumulation in grain [PDF]

, 2021
Amino acids are delivered into developing wheat grains to support the accumulation of storage proteins in the starchy endosperm, and transporters play important roles in regulating this process. RNA-seq, RT-qPCR, and promoter-GUS assays showed that three
Zhiqiang Shi, Hawkesford, Malcolm J., Hassall, K. L., Kirsty Hassall, Wan, Y., Wang, Yan, Powers, Stephen, Huttly, Alison K., Buchner, Peter, Caroline A Sparks, Shewry, Peter R., Jane L Ward, Yan Wang, Doris Rentsch, Sparks, Caroline A., Rentsch, Doris, Hassall, Kirsty, Huttly, A. K., Ward, J. L., Peter R Shewry, Alison K Huttly, Malcolm J Hawkesford, Shi, Z., Shi, Zhiqiang, Peter Buchner, Rentsch, D., Stephen Powers, Shewry, P. R., Wan, Yongfang, Yongfang Wan, Powers, S. J., Ward, Jane L., Buchner, P. H., Wang, Y., Sparks, C. A., Hawkesford, M. J.   +35 more
core   +2 more sources

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

FEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace, Alyssa Borges, Charles Arnaud, Tove Karlsson, Nina K. Bröker, Stefanie Barbirz, Marta Bally   +6 more
wiley   +1 more source

Saturation kinetics and specificity of transporters for L-arginine and asymmetric dimethylarginine (ADMA) at the blood-brain and blood-CSF barriers.

PLoS ONE
Nitric oxide synthases (NOS) synthesize nitric oxide (NO) from L-arginine in endothelial and neuronal cells. Asymmetric dimethylarginine (ADMA) is a homologue of arginine and an endogenous inhibitor of NOS.
Mehmet Fidanboylu, Sarah Ann Thomas
doaj   +1 more source

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

FEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee, Junho Jeong, Chae Yeong Lee, Hyunjoon Cho, Man Hwan Oh, Je Chul Lee, Jee‐Young Lee, Yangmee Kim   +7 more
wiley   +1 more source

Nitric Oxide Synthesis Requires Activity of the Cationic and Neutral Amino Acid Transport System y⁺L in Human Umbilical vein Endothelium

Experimental Physiology, 2003
L‐Arginine transport is mediated by the cationic/neutral amino acid transport system y+L and cationic amino acid transporters y+/CATs in human umbilical vein endothelial cells (HUVECs). System y+/CATs activity may be rate‐limiting for nitric oxide (NO) synthesis, but no reports have demonstrated system y+L involvement in NO synthesis in endothelium. We
Arancibia Garavilla, Y, Toledo, F, Casanello, P, Sobrevia, L   +3 more
openaire   +5 more sources

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

FEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

GSK3-mediated raptor phosphorylation supports amino acid-dependent Q2 mTORC1-directed signalling [PDF]

, 2015
The mammalian or mechanistic target of rapamycin (mTOR) complex 1 (mTORC1) is a ubiquitously expressed multimeric protein kinase complex that integrates nutrient and growth factor signals for the co-ordinated regulation of cellular metabolism and cell ...
Stretton, Clare, Taylor, Peter M., Hundal, Harinder, Prescott, Alan; id_orcid, Hoffmann, Thorsten M., Ganley, Ian G.; id_orcid, Munson, Michael J.   +6 more
core   +1 more source