3. Please select all true answers. Myosin I is simple and often associated with the plasma membrane, myosin V is typically associated with organelle transport, and myosin II forms bundles that cause large-scale actin-myosin contractions, like those found in muscle cells. Myosins have a conserved structure that includes a head, neck and tail region. The human genome contains about 40 different myosin genes that are all orthologs of each other. Myosin proteins form a large family with many homologs The myosin head domain has an actin-binding site and a nucleotide-binding site. 4. Please select all true answers. The sliding filament assay allows the measurement of myosin activity by covalently linking fluorescent molecules directly to myosin. The myosin power stroke occurs as ATP is hydrolyzed. After a contraction, myosin needs to bind ATP to be released from actin. Shorter myosin

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Proteins

We generally tend to think of proteins only from a dietary lens, as a component of what we eat. However, they are among the most important and abundant organic macromolecules in the human body, with diverse structures and functions. Every cell contains thousands and thousands of proteins, each with specific functions. Some help in the formation of cellular membrane or walls, some help the cell to move, others act as messages or signals and flow seamlessly from one cell to another, carrying information.  

Protein Expression

The method by which living organisms synthesize proteins and further modify and regulate them is called protein expression. Protein expression plays a significant role in several types of research and is highly utilized in molecular biology, biochemistry, and protein research laboratories.