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Chapter 25

The Cytoskeleton I: Actin and Microfilaments

Introduzione al citoscheletro
Introduzione al citoscheletro
Overview of the Cytoskeleton The cytoskeleton is a network of protein filaments present within the cell, having three distinct filaments ...
Adattabilità dei filamenti citoscheletrici
Adattabilità dei filamenti citoscheletrici
The cytoskeleton is a complex dynamic structure performing varied functions based on cellular requirements. The adaptability of the individual filaments ...
Polarità del citoscheletro
Polarità del citoscheletro
The intrinsic polarity of cells can be primarily attributed to two factors- i) the asymmetric accumulation of mobile components such are regulatory ...
Assemblaggio di filamenti citoscheletrici
Assemblaggio di filamenti citoscheletrici
Cytoskeletal filaments are polymeric forms of smaller protein subunits. However, individual cytoskeletal filaments may easily disassemble or associate ...
Proteine Linker del Citoscheletro - Plakins
Proteine Linker del Citoscheletro - Plakins
Plakins are large proteins with binding domains for microtubules, microfilaments, intermediate filaments, and membrane-associated protein complexes at ...
Proteine accessorie del citoscheletro
Proteine accessorie del citoscheletro
The cytoskeleton is an essential cell component that plays several structural and functional roles. However, the filaments that make up the cytoskeleton ...
Proteine del citoscheletro nei batteri
Proteine del citoscheletro nei batteri
Bacterial cells were initially considered simple, randomly organized structures lacking a cytoskeleton. However, the discovery of cytoskeleton homologs in ...
Movimento intracellulare di virus e batteri
Movimento intracellulare di virus e batteri
Intracellular bacteria and viruses often comprise a group of highly infectious pathogens that can cause several diseases. Bacterial pathogens include ...
Studiare il citoscheletro
Studiare il citoscheletro
The cytoskeletal architecture can be studied using different microscopic and biochemical techniques. Electron microscopy was instrumental in discovering ...
Introduzione all'actina
Introduzione all'actina
Actin is a highly conserved cytoskeletal protein found abundantly in eukaryotic cells. It constitutes 10% weight of the total cellular protein in muscle ...
Polimerizzazione dell'actina
Polimerizzazione dell'actina
Actin polymerization occurs through the head-to-tail association of binding sites on monomeric actin or G-actin to form filamentous or F-actin. The ...
Actin Tapis roulant
Actin Tapis roulant
Actin filaments undergo polymerization and depolymerization from either end. The polymerization and depolymerization rates depend on the cytosolic ...
Generazione di filamenti di actina dritti o ramificati
Generazione di filamenti di actina dritti o ramificati
The straight or branched structure formation of actin filaments is controlled by nucleating proteins such as the formins and Arp2/3 complex. ...
Depolimerizzazione del filamento di actina
Depolimerizzazione del filamento di actina
Actin filaments (F-actin) are composed of actin subunits. The dissociation of actin monomers can occur from either end of F-actin. The rate of ...
Formazione di filamenti di actina di ordine superiore
Formazione di filamenti di actina di ordine superiore
The polymerization of G-actin monomers into filamentous F-actin is a multi-step process. Once the F-actins are formed, they can bundle together in ...
Panoramica sulla struttura e la funzione della miosina
Panoramica sulla struttura e la funzione della miosina
Myosins are a family of molecular motor proteins, first identified in the skeletal muscles, where they are responsible for muscle contraction. Along with ...
Actina e miosina nella contrazione muscolare
Actina e miosina nella contrazione muscolare
Actin and myosin are contractile proteins that form the sarcomere found in skeletal muscle tissues for regulating muscle contraction. Actin, a globular ...
Il ruolo dell'actina e della miosina nelle cellule non muscolari
Il ruolo dell'actina e della miosina nelle cellule non muscolari
Actin and myosin or actomyosin filaments also play a significant role in cells other than those involved in muscle contraction (which occurs within the ...
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