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Kapitel 25

Das Zytoskelett I: Aktin und Mikrofilamente

Einführung in das Zytoskelett
Einführung in das Zytoskelett
Overview of the Cytoskeleton The cytoskeleton is a network of protein filaments present within the cell, having three distinct filaments ...
Anpassungsfähigkeit von Zytoskelettfilamenten
Anpassungsfähigkeit von Zytoskelettfilamenten
The cytoskeleton is a complex dynamic structure performing varied functions based on cellular requirements. The adaptability of the individual filaments ...
Polarität des Zytoskeletts
Polarität des Zytoskeletts
The intrinsic polarity of cells can be primarily attributed to two factors- i) the asymmetric accumulation of mobile components such are regulatory ...
Assemblierung von Zytoskelett-Filamenten
Assemblierung von Zytoskelett-Filamenten
Cytoskeletal filaments are polymeric forms of smaller protein subunits. However, individual cytoskeletal filaments may easily disassemble or associate ...
Linkerproteine des Zytoskeletts - Plakins
Linkerproteine des Zytoskeletts - Plakins
Plakins are large proteins with binding domains for microtubules, microfilaments, intermediate filaments, and membrane-associated protein complexes at ...
Akzessorische Proteine des Zytoskeletts
Akzessorische Proteine des Zytoskeletts
The cytoskeleton is an essential cell component that plays several structural and functional roles. However, the filaments that make up the cytoskeleton ...
Proteine des Zytoskeletts in Bakterien
Proteine des Zytoskeletts in Bakterien
Bacterial cells were initially considered simple, randomly organized structures lacking a cytoskeleton. However, the discovery of cytoskeleton homologs in ...
Intrazelluläre Bewegung von Viren und Bakterien
Intrazelluläre Bewegung von Viren und Bakterien
Intracellular bacteria and viruses often comprise a group of highly infectious pathogens that can cause several diseases. Bacterial pathogens include ...
Untersuchung des Zytoskeletts
Untersuchung des Zytoskeletts
The cytoskeletal architecture can be studied using different microscopic and biochemical techniques. Electron microscopy was instrumental in discovering ...
Einführung in Actin
Einführung in Actin
Actin is a highly conserved cytoskeletal protein found abundantly in eukaryotic cells. It constitutes 10% weight of the total cellular protein in muscle ...
Aktin-Polymerisation
Aktin-Polymerisation
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 ...
Aktin-Treadmilling
Aktin-Treadmilling
Actin filaments undergo polymerization and depolymerization from either end. The polymerization and depolymerization rates depend on the cytosolic ...
Bildung von geraden oder verzweigten Aktinfilamenten
Bildung von geraden oder verzweigten Aktinfilamenten
The straight or branched structure formation of actin filaments is controlled by nucleating proteins such as the formins and Arp2/3 complex. ...
Depolymerisation von Aktinfilamenten
Depolymerisation von Aktinfilamenten
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 ...
Bildung von Aktinfilamenten höherer Ordnung
Bildung von Aktinfilamenten höherer Ordnung
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 ...
Überblick über die Struktur und Funktion von Myosin
Überblick über die Struktur und Funktion von Myosin
Myosins are a family of molecular motor proteins, first identified in the skeletal muscles, where they are responsible for muscle contraction. Along with ...
Aktin und Myosin bei Muskelkontraktion
Aktin und Myosin bei Muskelkontraktion
Actin and myosin are contractile proteins that form the sarcomere found in skeletal muscle tissues for regulating muscle contraction. Actin, a globular ...
Die Rolle von Aktin und Myosin in Nicht-Muskelzellen
Die Rolle von Aktin und Myosin in Nicht-Muskelzellen
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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