Results 141 to 150 of about 76,591 (300)

An Element of Determinism in a Stochastic Flagellar Motor Switch [PDF]

open access: yes, 2015
Marine bacterium Vibrio alginolyticus uses a single polar flagellum to navigate in an aqueous environment. Similar to Escherichia coli cells, the polar flagellar motor has two states; when the motor is counter-clockwise, the cell swims forward and when the motor is clockwise, the cell swims backward. V.
arxiv   +1 more source

Sperm design and variation in the New World blackbirds (Icteridae) [PDF]

open access: yes, 2009
Post-copulatory sexual selection (PCSS) is thought to be one of the evolutionary forces responsible for the rapid and divergent evolution of sperm design. However, whereas in some taxa particular sperm traits are positively associated with PCSS, in other
AF Malo   +81 more
core   +2 more sources

Absolute proteomic quantification reveals design principles of sperm flagellar chemosensation [PDF]

open access: yes, 2019
© The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Troetschel, C., Hamzeh, H., Alvarez, L., Pascal, R., Lavryk, F., Boenigk, W., Koerschen, H.
Alvarez, Luis   +14 more
core   +1 more source

Dynamic instability in the hook-flagellum system that triggers bacterial flicks.

open access: yesPhysical Review E, 2017
Dynamical bending, buckling, and polymorphic transformations of the flagellum are known to affect bacterial motility, but run-reverse-flick motility of monotrichous bacteria also involves the even more flexible hook connecting the flagellum to its rotary
M. Jabbarzadeh, H. Fu
semanticscholar   +1 more source

The protein network of bacterial motility

open access: yesMolecular Systems Biology, 2007
Motility is achieved in most bacterial species by the flagellar apparatus. It consists of dozens of different proteins with thousands of individual subunits.
Seesandra V Rajagopala   +9 more
doaj   +1 more source

A dysflagellar mutant of Leishmania (Viannia) braziliensis isolated from a cutaneous leishmaniasis patient

open access: yesParasites & Vectors, 2012
Background Parasites of the Leishmania genus alternate between the flagellated extracellular promastigote stage and intracellular amastigotes. Here we report the characterization of a Leishmania isolate, obtained from a cutaneous leishmaniasis patient ...
Zauli Rogéria C   +15 more
doaj   +1 more source

Maintenance of Constant Wave Parameters by Sperm Flagella at Reduced Frequencies of Beat [PDF]

open access: yes, 1973
1. Treatment of Ciona spermatozoa with low concentrations of Triton X-100 (less than 0·01 %) causes them to beat at lower than normal frequencies. The wavelength of the flagellar bending waves remains constant over the range from 10 to 40 Hz.
Brokaw, C. J., Josslin, R.
core  

Survey of the Ciliary Motility Machinery of Drosophila Sperm and Ciliated Mechanosensory Neurons Reveals Unexpected Cell-Type Specific Variations: A Model for Motile Ciliopathies

open access: yesFrontiers in Genetics, 2019
The motile cilium/flagellum is an ancient eukaryotic organelle. The molecular machinery of ciliary motility comprises a variety of cilium-specific dynein motor complexes along with other complexes that regulate their activity.
Petra zur Lage   +2 more
doaj   +1 more source

A dynamic coordination of flagellum and cytoplasmic cytoskeleton assembly specifies cell morphogenesis in trypanosomes

open access: yesJournal of Cell Science, 2015
Plasma membrane‐to‐plasma membrane connections are common features of eukaryotic cells, with cytoskeletal frameworks below the respective membranes underpinning these connections.
J. Sunter   +3 more
semanticscholar   +1 more source

A Chaperone for the Stator Units of a Bacterial Flagellum

open access: yesmBio, 2019
The bacterial flagellum is a reversible rotating motor powered by ion transport through stator units, which also exert torque on the rotor component to turn the flagellum for motility. Species-specific adaptations to flagellar motors impact stator function to meet the demands of each species to sufficiently power flagellar rotation.
Deborah A. Ribardo   +3 more
openaire   +3 more sources

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