| 11. | Five shorter alpha helices form caps on the ends of the structure.
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| 12. | Each row compares the two helices from a different perspective.
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| 13. | The other domains form a super-helix of short alpha helices.
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| 14. | With cyclin, two alpha helices change position to permit ATP binding.
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| 15. | One of these helices, S4, is the voltage sensing helix.
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| 16. | In BtuCD, the packing of the helices is complex.
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| 17. | The Ramachandran plot for protein Z indicates it will form alpha helices.
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| 18. | They can also form triple helices in conjunction with the DNA duplex.
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| 19. | The heme was found to be sandwiched between helices I and L.
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| 20. | This is especially noticeable when traveling through the helices at the end.
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