The nuclear pore complex: a strategic platform for regulating cell signaling.
Yangnan Gu1,2
1Tsinghua University-Peking University Joint Center for Life Sciences, Beijing, 100084, China.
The New Phytologist
|September 1, 2017
Summary
Nuclear pore complexes (NPCs) act as dynamic gateways, regulating molecule transport and playing key roles in plant immune and hormone signaling pathways. Their structural flexibility allows NPCs to fine-tune cellular responses to environmental cues.
Area of Science:
- Cell Biology
- Molecular Biology
- Plant Science
Background:
- Nuclear pore complexes (NPCs) are essential cellular structures perforating the nuclear envelope.
- NPCs facilitate selective, bi-directional macromolecule transport between the nucleus and cytoplasm.
- Emerging evidence highlights NPCs as dynamic signaling platforms, not just static channels.
Purpose of the Study:
- To review the roles of NPC constituents in plant immune signaling.
- To examine the involvement of NPCs in plant hormone signaling.
- To discuss the NPC as a regulatory platform for cell signaling.
Main Methods:
- Literature review of recent studies on NPC function in plants.
- Analysis of NPC structural and conformational dynamics.
- Integration of findings on NPC roles in immune and hormone signaling.
Main Results:
- NPCs are flexible environments that strategically influence nuclear signaling.
- NPCs tailor nucleocytoplasmic transport based on cellular and environmental cues.
- NPC constituents play significant roles in immune activation and hormone signaling in plants.
Conclusions:
- The NPC is a dynamic entity crucial for regulating cellular communication.
- NPCs are integral to plant immune and hormone signaling pathways.
- The NPC serves as a legitimate platform for modulating cell signaling.
Related Concept Videos
Regulation of Nuclear Protein Sorting
3.4K
Nuclear protein sorting regulates nucleus composition and gene expression, crucial for determining the fate of a eukaryotic cell. Hence, the entry and exit of molecules across the nuclear envelope is a tightly controlled process. Nuclear protein sorting can be inhibited by one of the following ways: 1) masking cargo signal sequences, 2) modifying the nuclear receptor's affinity for cargo, 3) controlling the nuclear pore size, 4) retaining the cargo during its transit to the cytosol or the...
3.4K
Nuclear Protein Sorting
6.5K
Nuclear protein sorting is the selective trafficking of histones, polymerases, gene regulatory proteins into the nucleus and exporting RNAs and ribosomes to the cytosol. It is a tightly controlled process that regulates gene expression within a cell.
Proteins targeted to the nucleus carry nuclear localization signals or NLS recognized by import receptors in the cytosol. Similarly, proteins with nuclear export signals are recognized by export receptors. Import and export receptors are...
Proteins targeted to the nucleus carry nuclear localization signals or NLS recognized by import receptors in the cytosol. Similarly, proteins with nuclear export signals are recognized by export receptors. Import and export receptors are...
6.5K
Signal Transduction: Overview
12.0K
Cells respond to many types of information, often through receptor proteins positioned on the membrane. They respond to chemical signals, such as hormones, neurotransmitters, and other signaling molecules, initiating a series of molecular reactions to produce an appropriate response. This is called signal transduction. Cells also coordinate different responses elicited by the same signaling molecule via mediators, allowing molecular cross-talk.
Typically, signal transduction involves three...
Typically, signal transduction involves three...
12.0K
Nuclear Export of mRNA
8.9K
Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...
8.9K
Nuclear Export of mRNA
5.5K
5.5K
Assembly of Signaling Complexes
6.7K
Multiprotein signaling complexes are formed in a dynamic process involving protein-protein interactions at the cytoplasmic domain of transmembrane receptors or enzymatic and non-enzymatic proteins associated with the receptor. These complexes ensure the activation and propagation of intracellular signals that regulate cell functions.
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
6.7K


