Alpha Tubulin: A Fundamental Cytoskeleton Protein with Many Roles. Tubulins are the microtubule building block and exist as globular dimeric proteins of alpha/beta chains. There are five distinct forms: alpha, beta, gamma, delta, and epsilon tubulin.
Furthermore, what is a Protofilament?
A protofilament is a linear row of tubulin dimers. Microtubules may work alone, or join with other proteins to form more complex structures called cilia, flagella or centrioles .
Also, what is tubulin polymerization?
Microtubules are polymers of tubulin that form part of the cytoskeleton and provide structure and shape to eukaryotic cells. They are formed by the polymerization of a dimer of two globular proteins, alpha and beta tubulin into protofilaments that can then associate laterally to form a hollow tube, the microtubule.
Is tubulin a protein?
Tubulin is the protein that polymerizes into long chains or filaments that form microtubules, hollow fibers which serve as a skeletal system for living cells. Microtubules have the ability to shift through various formations which is what enables a cell to undergo mitosis or to regulate intracellular transport.
Was ist das Mikrotubuli?
Mikrotubuli sind röhrenförmige Proteinkomplexe, die zusammen mit den Mikrofilamenten und den Intermediärfilamenten das Cytoskelett eukaryotischer Zellen bilden.