| 21. | Proteins of the IgSF possess a structural domain known as an sheets of antiparallel beta strands.
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| 22. | Native SAA1 is a hexamer with each subunit assuming an antiparallel 4-helix bundle structure.
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| 23. | It forms a three-stranded antiparallel beta-sheet supported by the conserved disulfide bridge.
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| 24. | There is a central ? sheet that is composed of one parallel strand and three antiparallel strands.
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| 25. | These daughter copies each contain one strand from the parental duplex DNA and one nascent antiparallel strand.
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| 26. | This domain consists of a five-stranded antiparallel beta-sheet twisted around an alpha helix.
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| 27. | Three-dimensional structural data have shown that a TPR region forms two antiparallel alpha-helices.
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| 28. | Due to dipole coupling of the ferromagnetic layers results in antiparallel alignment of the magnetization of the ferromagnets.
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| 29. | Early thought experiments for unbound singlets usually assumed the use of two antiparallel spin 1 / 2 electrons.
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| 30. | In all cases, including factor D, there are two antiparallel loops connecting the secondary structural elements.
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