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[Retinol transport into the cell nucleus in vitro]
S V Chetyrkin1, L A Chernukhina, G V Donchenko
1A.V. Palladin Institute of Biochemistry, Kiev.
Ukrainskii Biokhimicheskii Zhurnal (1978)
|December 16, 1998
Summary
Cellular Retinol-Binding Protein (CRBP) is essential for retinol to interact with cell nuclei. CRBP facilitates retinol
Area of Science:
- Cellular biology
- Molecular biology
- Biochemistry
Context:
- Retinol, a vital nutrient, requires specific transport mechanisms for cellular functions.
- Understanding nuclear transport is crucial for cellular signaling and gene regulation.
Purpose:
- To investigate the role of Cellular Retinol-Binding Protein (CRBP) in the interaction of retinol with cellular nuclei.
- To elucidate the mechanism of retinol delivery to nuclear receptors.
Summary:
- Retinol interacts with cellular nuclei, nuclear envelope, and chromatin exclusively when bound to CRBP.
- CRBP mediates specific binding to the nuclear envelope, nuclear penetration, and chromatin receptor binding.
- CRBP demonstrates no species or tissue specificity in these interactions.
Impact:
- Highlights CRBP's critical role in nuclear retinol transport.
- Provides a mechanistic framework for retinol's nuclear actions.
- Suggests CRBP as a key factor in regulating cellular retinol homeostasis.