Results 101 to 110 of about 16,236 (260)

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

FEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva, Puspa Kunwar, Md Ibnul Rifat Rahman, Joanna Koryo Kwao, Nathan Lehman, Zihan Zhang, Trenton Paul, Claire Cheng, Nicholas Truex, Hui‐Ting Lee, Jun Zhang   +10 more
wiley   +1 more source

High-Precision Low-Speed Measurement for Permanent Magnet Synchronous Motors Using an Improved Extended State Observer

World Electric Vehicle Journal
High-precision speed measurement at low speeds in PMSM drives is hindered by encoder quantization noise. This paper proposes an enhanced extended state observer (ESO)-based method to overcome limitations of conventional approaches such as direct ...
Runze Ji, Kai Liu, Yingsong Wang, Rana Md Sohel   +3 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

Anti-Disturbance for ST-VTOL UAV via Sliding Mode Control with Enhanced Observer

Drones
As a classical disturbance observation method, the extended state observer (ESO) is commonly used in controllers for disturbance estimation and feedback control.
Jiahui Zhang, Jinwu Xiang, Daochun Li, Gang Yang, Weicheng Di, Ligang Zhang, Zhan Tu   +6 more
doaj   +1 more source

The variable stellar wind of Rigel probed at high spatial and spectral resolution

, 2014
We present a spatially resolved, high-spectral resolution (R=12000) K-band temporal monitoring of Rigel using AMBER at the VLTI. Rigel was observed in the Bracket Gamma line and its nearby continuum in 2006-2007, and 2009-2010.
Chesneau, O., Chini, R., Colvinter, C., Dessart, L., Kaufer, A., Prinja, R., Spang, A., Stahl, O.   +7 more
core   +3 more sources

PICALM::MLLT10 translocated leukemia

FEBS Letters, EarlyView.
This comprehensive review of PICALM::MLLT10 translocated acute leukemia provides an in‐depth review of the structure and function of CALM, AF10, and the fusion oncoprotein (1). The multifaceted molecular mechanisms of oncogenesis, including nucleocytoplasmic shuttling (2), epigenetic modifications (3), and disruption of endocytosis (4), are then ...
John M. Cullen, Antonia C. Nakatsugawa, Natalie Barton, Henry Haines, Gary S. Stein, Janet L. Stein, Daniel S. Wechsler, Jessica L. Heath   +7 more
wiley   +1 more source

An integrated solution for 3D overhead cranes: Time-optimal motion planning, obstacle avoidance, and anti-swing

Engineering Science and Technology, an International Journal
This paper proposed a motion planning scheme, a nonlinear controller integrated with an observer for a three-dimensional overhead crane (3DOC) nonlinear system.
Van Chung Nguyen, Hue Luu Thi, Hoa Bui Thi Khanh, Huy Nguyen Danh, Dai Pham Duc, Tung Lam Nguyen   +5 more
doaj   +1 more source

Experimental Verifications of Vibration Suppression for a Smart Cantilever Beam with a Modified Velocity Feedback Controller

Shock and Vibration, 2014
This paper presents various experimental verifications for the theoretical analysis results of vibration suppression to a smart flexible beam bonded with a piezoelectric actuator by a velocity feedback controller and an extended state observer (ESO ...
Ting Zhang, Hong Guang Li, Guo Ping Cai, Fu Cai Li   +3 more
doaj   +1 more source

Properties of bow-shock sources at the Galactic center

, 2014
There are an enigmatic population of massive stars around the Galactic Center (GC) that were formed some Ma ago. A fraction of these stars has been found to orbit the supermassive black hole, SgrA*, in a projected clockwise disk, which suggests that they
Alberdi, A., Hummel, C. A., Muzic, K., Pott, J. -U., Sanchez-Bermudez, J., Schödel, R.   +5 more
core   +1 more source