Results 41 to 50 of about 100,218 (259)

Tuning the torque-speed characteristics of bacterial flagellar motor to enhance the swimming speed

, 2019
In a classic paper, Edward Purcell analysed the dynamics of flagellated bacterial swimmers and derived a geometrical relationship which optimizes the propulsion efficiency. Experimental measurements for wild-type bacterial species E.
Abdulla, Amith Z., Prakash, Praneet, Singh, Varsha, Varma, Manoj   +3 more
core   +1 more source

EIF5A Couples Translational Control With Transcriptional Reprogramming Through Chromocenter Reorganization During Spermiogenesis

Advanced Science, EarlyView.
The translation factor Eukaryotic translation initiation factor 5A (eIF5A) is essential for male fertility in mice. It supports the translation of proteins crucial for heterochromatin organization and acrosome formation. eIF5A deficiency disrupts chromocenter integrity, increases chromatin accessibility, and causes transcriptional dysregulation ...
Yuling Cai, Tongtong Li, Qian Fang, Ziyou Bao, Feng Kong, Huitao Qi, Hanzhen Li, Mingyu Zhang, Wei Wang, Yongxia Guan, Wenbo Liu, Xiangfeng Chen, Zi‐Jiang Chen, Xiaohua Jiang, Xin Wang, Hongbin Liu   +15 more
wiley   +1 more source

Native cellular architecture of Treponema denticola revealed by cryo-electron tomography [PDF]

, 2009
Using cryo-electron tomography, we are developing a refined description of native cellular structures in the pathogenic spirochete Treponema denticola. Tightly organized bundles of periplasmic flagella were readily observed in intact plunge-frozen cells.
Hsieh, Chyong-Ere, Izard, Jacques, Limberger, Ronald J., Mannella, Carmen A., Marko, Michael   +4 more
core   +1 more source

Ciliary contact interactions dominate surface scattering of swimming eukaryotes

, 2012
Interactions between swimming cells and surfaces are essential to many microbiological processes, from bacterial biofilm formation to human fertilization.
Dunkel, Jörn, Goldstein, Raymond E., Kantsler, Vasily, Polin, Marco   +3 more
core   +1 more source

A Flagellar A-Kinase Anchoring Protein with Two Amphipathic Helices Forms a Structural Scaffold in the Radial Spoke Complex [PDF]

, 2012
A-kinase anchoring proteins (AKAPs) contain an amphipathic helix (AH) that binds the dimerization and docking (D/D) domain, RIIa, in cAMP-dependent protein kinase A (PKA). Many AKAPs were discovered solely based on the AH–RIIa interaction in vitro.
Alto, Angelo, Banky, Barber, Brokaw, Burns-Hamuro, Cao, Carr, Carr, Carr, Chen, Cho, Diener, Diener, Fujita, Gaillard, Gaillard, Gold, Greengard, Gupta, Habermacher, Habermacher, Herberg, Hirsch, Howard, Hsu, Huang, Jarnaess, Jennifer M. Dienes, Jiang, Kammerer, Kinderman, Kindle, Klauck, Kohno, Li, Martin St. Maurice, Mastronarde, Mauban, Means, Mitchell, Morikis, Newell, Nicastro, Omoto, Patel, Patel-King, Pauling, Pigino, Pinfen Yang, Priyanka Sivadas, Roguev, Rual, Sarma, Satir, Scott, Silflow, South, Wang, Warner, Wei, Welch, William D. Meek, Williams, Wirschell, Witman, Xia, Xu, Yang, Yang, Yang, Yang   +71 more
core   +2 more sources

Transcription Factor Promiscuity Drives Regulatory Rewiring and Evolvability in Gene Networks in Bacteria

Advanced Science, EarlyView.
ABSTRACT This special issue marking the University of Bath's 60th anniversary offers an opportunity to reflect on nearly a decade of research into the evolution of gene regulatory networks (GRNs) from members of the lab and elsewhere. Our goal is to understand how GRNs rewire and how new transcription factor (TF) functions evolve. Using an experimental
Tiffany B. Taylor, Alan M. Rice
wiley   +1 more source

Structure and behaviour of the sperm terminal filament [PDF]

, 1982
Light- and electron-microscopic observations of Ciona and Lytechinus spermatozoa show a thin terminal filament at the distal end. The terminal filament is 5-6 microns long and contains the two central microtubules and a variable number of A-tubule ...
Brokaw, C. J., Omoto, C. K.
core  

Modelling the Fluid Mechanics of Cilia and Flagella in Reproduction and Development

, 2012
Cilia and flagella are actively bending slender organelles, performing functions such as motility, feeding and embryonic symmetry breaking. We review the mechanics of viscous-dominated microscale flow, including time-reversal symmetry, drag anisotropy of
Blake, John R., Loghin, Daniel, Montenegro-Johnson, Thomas D., Smith, Andrew A., Smith, David J.   +4 more
core   +1 more source

MicrobeDiscover: A Knowledge Graph–Enabled AI Framework for Identifying Microbes for Inorganic Nanomaterial Biosynthesis

Advanced Science, EarlyView.
Microbial synthesis of nanomaterials (NMs) is eco‐friendly, but the screening of microorganisms is limited by inefficient traditional methods (currently only involving∽400 microorganisms/90 NMs). We propose AI framework MicrobeDiscover, integrating a knowledge graph of microbe‐NM interactions.
Ludi Wang, Hexing Han, Yufeng Liu, Zhiyuan Ning, Yujie Ma, Haidan Wang, Jinling Xu, Qiansheng Huang, Wenjuan Cui, Yuanchun Zhou, Yang Gao, Bin Wang, Yi Du   +12 more
wiley   +1 more source

Flagellar propulsion [PDF]

, 2006
In this JEB Classics paper, Sir James Gray and G. J. Hancock explained how spermatozoa are propelled by flagellar bending waves (Gray and Hancock, 1955). This paper was a lasting success because it provided an easy-to-understand solution to a complicated
Brokaw, Charles J.
core   +1 more source