The actual sheet fabric can be a variety of different materials or fibers: cotton, linen, silk, polyester and others. The fabric can have different thread counts and finishes: 180-500 thread count, satin, flannel. Relaxing scents include lavender.
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| - The actual sheet fabric can be a variety of different materials or fibers: cotton, linen, silk, polyester and others. The fabric can have different thread counts and finishes: 180-500 thread count, satin, flannel. Relaxing scents include lavender.
- A sheet or bed sheet was a piece of fabric that covered a bed. In 2373, in an attempt to woo Kathryn Janeway into having his child, Q replaced the Starfleet issue sheets on her bed with red satin ones, claiming that Starfleet issue sheets gave him a rash. (VOY: "The Q and the Grey")
- Sheets are also called "strands", and sometimes the prefix "beta" is added, so you may see beta-sheet or β-sheet, beta strand or β-strand. Technically, a "strand" is a section of the protein, and a sheet is two or more stands bonded together. In Foldit, the term "sheet" is normally used for both sheets and strands. The "beta" in beta-sheet reflects the fact that sheets were the second type of protein structure discovered, after the "alpha" helix. The main attribute of sheets is that they readily form multiple hydrogen bonds with neighboring sheets.
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abstract
| - The actual sheet fabric can be a variety of different materials or fibers: cotton, linen, silk, polyester and others. The fabric can have different thread counts and finishes: 180-500 thread count, satin, flannel. Relaxing scents include lavender.
- A sheet or bed sheet was a piece of fabric that covered a bed. In 2373, in an attempt to woo Kathryn Janeway into having his child, Q replaced the Starfleet issue sheets on her bed with red satin ones, claiming that Starfleet issue sheets gave him a rash. (VOY: "The Q and the Grey")
- Sheets are also called "strands", and sometimes the prefix "beta" is added, so you may see beta-sheet or β-sheet, beta strand or β-strand. Technically, a "strand" is a section of the protein, and a sheet is two or more stands bonded together. In Foldit, the term "sheet" is normally used for both sheets and strands. The "beta" in beta-sheet reflects the fact that sheets were the second type of protein structure discovered, after the "alpha" helix. In its ideal form, sheets appear as a lightning-shaped flat strip of amino acids with sidechains coming out of the faces in alternating directions -- up and down. The main attribute of sheets is that they readily form multiple hydrogen bonds with neighboring sheets. The Foldit view options "Show Bonds" (basic GUI) or "Show Bonds (sheet)" (advanced GUI) can be used to visualize the bonds between sheets. In the advanced GUI, the "cartoon" or "cartoon thin" protein view options show sheets with the lightning bolt or zig-zag shape seen in the examples on this page.
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