Results 71 to 80 of about 3,805,307 (284)

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Influence of High-speed Railway to Power Quality and its Governance Measures

Kongzhi Yu Xinxi Jishu, 2010
The principles of traction power supply and the load characteristics are described briefly for high-speed railway. The power quality problems such as negative sequence and harmonic on the power supply system caused by high-speed railway are analyzed ...
周方圆, 王卫安
doaj  

A Negative Sequence Impedance Design and Regulation Strategy for Negative Sequence Current Sharing Among Grid-Forming Sources in Microgrids Considering Topology Impacts

IEEE Open Journal of Power Electronics
The accurate control of negative sequence (NS) current distribution among multiple grid-forming (GFM) sources can lower the requirement on NS current capability of the sources.
Dingrui Li, Chengwen Zhang, Zhihao Jiang, Yu Su, Yiwei Ma, Fred Wang, Leon M. Tolbert   +6 more
doaj   +1 more source

All Non-Maximally-Helicity-Violating One-Loop Seven-Gluon Amplitudes in N=4 Super-Yang-Mills Theory

, 2004
We compute the non-MHV one-loop seven-gluon amplitudes in N=4 super-Yang-Mills theory, which contain three negative-helicity gluons and four positive-helicity gluons. There are four independent color-ordered amplitudes, (- - - + + + +), (- - + - + + +), (
C. Anastasiou, C. J. Zhu, D. B. Melrose, David A. Kosower, F. Cachazo, F. Cachazo, F. Cachazo, G. Georgiou, G. Georgiou, J. B. Wu, J. B. Wu, L. J. Dixon, Lance J. Dixon, N. Berkovits, N. Berkovits, R. Roiban, S. D. Badger, S. J. Gates, S. J. Parke, Vittorio Del Duca, W. T. Giele, Z. Bern, Z. Bern, Z. Bern, Z. Bern, Z. Bern, Z. Bern, Z. Nagy, Zvi Bern   +28 more
core   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source

Analysis of unbalanced clustered voltage and control strategy of clustered voltage balancing for cascaded H-bridge STATCOM

Journal of Modern Power Systems and Clean Energy, 2019
To explore the clustered voltage balancing mechanism of the cascaded H-bridge static synchronous compensator (STATCOM), this paper analyzes the causes of unbalanced clustered voltage. The negative-sequence current caused by the compensation of unbalanced
Yu Jin, Jianze Wang, Yiqi Liu, Xinagyu Sai, Yanchao Ji   +4 more
doaj   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

Fetal Brain Tumor Harboring a Unique ROCK1::BRAF Fusion

Pediatric Blood &Cancer, EarlyView.
Marllon Cindra Sant'Ana, Mariana Maschietto, Daniela Paz Leal, Ricardo de Santos de Oliveira, Mayara Ferreira Euzébio, Antonio Carlos dos Santos, Luciano Neder, Carlos Alberto Scrideli, Elvis Terci Valera   +8 more
wiley   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Realizability of integer sequences as differences of fixed point count sequences

, 2009
A sequence of non-negative integers is exactly realizable as the fixed point counts sequence of a dynamical system if and only if it gives rise to a sequence of non-negative orbit counts.
Neumaerker, Natascha
core   +1 more source