Proteins are responsible for nearly every task of cellular life, including cell shape and inner organization, product manufacture and waste cleanup, and routine maintenance. Proteins also receive signals from outside the cell and mobilize intracellular response. They are the workhorse macromolecules of the cell and are as diverse as the functions they serve.
Proteins can be big or small, mostly hydrophilic or mostly hydrophobic, exist alone or as part of a multi-unit structure, and change shape frequently or remain virtually immobile. All of these differences arise from the unique amino acid sequences that make up proteins. Fully folded
proteins …show more content…
Cells also secrete various proteins that become part of the extracellular matrix or are involved in intercellular communication.
Proteins are sometimes altered after translation and folding are complete. In such cases, called transferase enzymes add small modifier groups, such as phosphates or carboxyl groups, to the protein. These modifications often shift protein conformation and act as molecular switches that turn the activity of a protein on or off. Many post-translational modifications are reversible, although different enzymes catalyze the reverse reactions.” http://www.nature.com/scitable/topicpage/protein-function-1412334 Glucose AKA sugar is a thing your body likes. Your cells use it as a primary source of energy, so when you consume sugar, it's actually helpful. But it use very quickly. When it's transported into the body, it stimulates the pancreas to produce insulin. Each of the cells contains millions of protein bits and will keep making new protein to replace older protein bits. If you fail to eat a lot essential amino acids, your body cannot acquire the compounds needed to make up this new protein, which wwill slows down new protein production.
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