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BIO NMDCAT Cytoplasmic Organelles
nmdcat.online July 4, 2026

19. The dynamic transport receptor responsible for binding nuclear export signals (NES) on proteins to facilitate their passage out into the cytoplasm is

A. Importin-alpha
B. Exportin
✓
C. Ran-GAP
D. Nucleoplasmin

📝 Explanation

Exportins recognize cargo proteins tagged with an NES and form a complex with Ran-GTP to migrate out of the nucleus.

📖 Additional Information

  • Importin-alpha
  • Exportin
  • Ran-GAP
  • Nucleoplasmin

Exportins recognize cargo proteins tagged with an NES and form a complex with Ran-GTP to migrate out of the nucleus.

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