Microtubules are protein filaments that have a tubular structure and, together with actin and intermediate filaments, form the cytoskeleton of eukaryotic cells. They stabilize the cell and also participate in transport and movement within the cell. What are microtubules? Microtubules are tubular polymers whose protein structures are about 24nm in diameter. Together with other filaments, … Microtubules: Structure, Function & Diseases
Nuclear division (mitosis) of cells of eukaryotic organisms with replication of DNA can be divided into four main phases. The second main phase is called metaphase, during which chromosomes contract in a spiral pattern and position themselves in the equatorial plane at approximately equal distances from both opposite poles. The spindle fibers, starting from both … Metaphase: Function, Tasks, Role & Diseases
Cytosol is the fluid portion of the contents of a human cell and thus part of the cytoplasm. The cytosol is composed of about 80% water, with the remaining portion distributed among proteins, lipids, nucleotides, sugars, and ions. They serve important metabolic processes that take place in the aqueous to viscous cytosol. What is cytosol? … Cytosol: Function & Diseases
Dynein is a motor protein that primarily ensures the motility of cilia and flagella. Thus, it is an important intracellular component of the ciliated epithelium, male sperm, eustachian tube, and bronchi or uterine tuba. Mutation of several genes can impair dynein function. What is dynein? Together with myosin, kinesin, and prestin, the cytoskeletal protein dynein … Dynein: Function & Diseases
Mitosis proceeds in several phases. Among them, prophase represents the beginning of mitosis. Disruptions in the prophase process prevent the initiation of cell division. What is prophase? Both mitosis and meiosis begin with prophase. In both cases, cell division occurs. However, while in mitosis the identical genetic material is passed on to the daughter cells, … Prophase: Function, Tasks, Role & Diseases
Kinesin represents a complex of certain motor proteins in eukaryotic cells. Along with other motor proteins such as dynein or myosin and other structural proteins, it is involved in the assembly of the cytoskeleton. It serves to transport macromolecules, vesicles, and cell organelles from the cytoplasm or nucleus toward cell membranes. What is kinesin? Kinesins … Kinesin: Function & Diseases
