The ran gtpase proteins that contain nuclear

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Unformatted text preview: A) B) C) D) E) clathrin only caveolin only clathrin or caveolin COPI only COPII only 10. A nuclear localization sequence is often a stretch of _______________ amino acids that is located _____________ of a protein. A) negatively charged / at the C ­terminus B) negatively charged / at the N ­terminus C) hydrophobic / anywhere on the surface D) positively charged / anywhere on the surface E) positively charged / at the C ­terminus 11. Nucleoporins containing FG ­repeats are important for nuclear trafficking because they bind directly to: A) B) C) D) E) 12. the Ran GTPase proteins that contain nuclear localization sequence (NLS) proteins that contain nuclear export sequence (NES) B and C importin and exportin The GTP on β ­tubulin A) is trapped at the interface of the α/β ­tubulin dimer B) can be hydrolyzed in the α/β ­tubulin dimer C) can be hydrolyzed only after the α /β  ­tubulin dimer has been incorporated into the microtubule lattice D) cannot be hydroly...
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