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Modulation of microtubule dynamics by monovalent ions.
PNAS Nexus
January 2025
Department of Biochemistry, University of Geneva, 1211 Geneva, Switzerland.
The microtubule cytoskeleton is a dynamic network essential for many cellular processes, influenced by physicochemical factor, such as temperature, pH, dimer concentration, and ionic environment. In this study, we used in vitro reconstitution assays to examine the effects of four monovalent ions (Na, K, Cl, and Ac) on microtubule dynamics, uncovering distinct effects for each ion. Na was found to increase microtubule dynamicity by raising catastrophe frequency, polymerization and depolymerization speeds, and ultimately reducing microtubule lifetime by 80%.
View Article and Find Full Text PDFKIF1A, a neuron-specific Kinesin-3 motor, is indispensable for long-distance axonal transport and nuclear migration, processes vital for neuronal function. Using MINFLUX tracking, we reveal that KIF1A predominantly adopts a two-heads-bound state, even under ATP-limiting conditions, challenging prior models proposing a one-head-bound rate-limiting step. This two-heads-bound conformation, stabilized by interactions between the positively charged K-loop and negatively charged tubulin tails, enhances microtubule affinity and minimizes detachment.
View Article and Find Full Text PDFIdentification of novel cytoskeleton protein involved in spermatogenic cells and sertoli cells of non-obstructive azoospermia based on microarray and bioinformatics analysis.
BMC Med Genomics
January 2025
Department of Surgery, Faculty of General of Medicine, Koya University, Koya, Kurdistan Region - F.R., KOY45, Iraq.
Background: During mammalian spermatogenesis, the cytoskeleton system plays a significant role in morphological changes. Male infertility such as non-obstructive azoospermia (NOA) might be explained by studies of the cytoskeletal system during spermatogenesis.
Methods: The cytoskeleton, scaffold, and actin-binding genes were analyzed by microarray and bioinformatics (771 spermatogenic cellsgenes and 774 Sertoli cell genes).
The Anthelmintic Activity of Lam. Against Gastrointestinal Nematodes of Sheep: Rosmarinic Acid Quantification and In Silico Tubulin-Binding Studies.
Pathogens
January 2025
Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, Ankara 06330, Turkey.
Gastrointestinal nematodes (GINs) inflict significant economic losses on sheep and goat farming globally due to reduced productivity and the development of anthelmintic resistance. Sustainable control strategies are urgently needed including the exploration of medicinal plants as safer alternatives to chemical anthelmintics. This genus of plants is used for anti-inflammatory, antioxidant, and antimicrobial activities.
View Article and Find Full Text PDFGlycosylation Patterns in Gut: Implications for the Development of Vector Control Strategies.
Microorganisms
January 2025
Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad Nacional Autónoma de México, México City 04510, Mexico.
The primary mode of transmission for Chagas disease is vector-borne transmission, spread by hematophagous insects of the subfamily. In Mexico, the triatomine is particularly significant in the transmission of . This study focused on analyzing protein expression and modifications by glycosylation in different regions of the digestive tract of fifth-instar nymphs of .
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