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.
5.
Which of the following is NOT true of formins and Arp2/3 nucleators?
Assembly and disassembly of these filaments contribute to many types of cellular movements. Many proteins regulate actin assembly, but Arp2/3 complex and formins are the focus review because more is known about them than other proteins that stimulate the formation of new filaments.
This complex is active at the leading edge of motile cells, where it produces branches on the sides of existing filaments. Growth of these filaments produces force to protrude the membrane.
Arp2/3 complex and formins are the only known plant actin nucleators. These cellular nucleators of actin assembly overcome these kinetic barriers by a different mechanism. Formins stblize actin the polymerization intermediate.
Formins nucleate and support the elongation of unbranched actin filaments for the cytokinesis and other various types of actin filament bundles.
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