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scleroprotein |
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scleroprotein, large class of protein protein, any of the group of highly complex organic compounds found in all living cells and comprising the most abundant class of all biological molecules. Protein comprises approximately 50% of cellular dry weight. ..... Click the link for more information. molecules that are ordinarily insoluble in water. The scleroproteins are employed principally for architectural purposes in the living cell and are localized in the structural tissues of bone, hair, skin, wool, silk, nails, hooves, and feathers. The major subclasses of scleroproteins include the collagens collagen (kŏl`əjən) ..... Click the link for more information. , elastins, and keratins keratin (kĕr`ətĭn), any one of a class of fibrous protein molecules that serve as structural units for various living tissues. ..... Click the link for more information. . |
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| The natural fibrous proteins, such as collagen, that make up the body's scaffolding have diameters in the range of hundreds of nanometers to a few micrometers. This mutation affects the body's ability to make collagen, a fibrous protein that builds a framework of connective tissue in skin, bones, cartilage (bone-connecting tissue), and tendons (tissues that connect muscles to bones). Schmidt, whose background is in physical and analytical chemistry, began working with feather keratin because he was studying another fibrous protein, collagen, and wanted to compare the physical properties of the two. |
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