Nuclear Protein Interaction
Nuclear Protein Interaction - Related Videos
05:43
A Protein Preparation Method for the High-throughput Identification of Proteins Interacting with a Nuclear Cofactor Using LC-MS/MS Analysis
0 Views •
Cited by 1 •
2017
We have established a method for the purification of coregulatory interaction proteins using the LC-MS/MS system.
06:05
Nuclear Magnetic Resonance to Study Atomic Level Protein-Protein Interactions
0 Views •
2025
This video describes the nuclear magnetic resonance spectroscopy technique to study protein-protein interactions between 15N-labeled wild-type and mutant envoplakin proteins and the unlabeled vimentin protein. The successful interaction between wild-type envoplakin and vimentin leads to extensive line broadening and peak disappearance in the NMR spectra, whereas the absence of an interaction between the mutated envoplakin and vimentin results in well-resolved peaks in the NMR spectra.
10:05
Visualization of Protein-protein Interaction in Nuclear and Cytoplasmic Fractions by Co-immunoprecipitation and In Situ Proximity Ligation Assay
0 Views •
Cited by 15 •
2017
Protein-protein interactions can occur in both the nucleus and the cytoplasm of a cell. To investigate these interactions, traditional co-immunoprecipitation and modern proximity ligation assay are applied. In this study, we compare these two methods to visualize the distribution of NF90-RBM3 interactions in the nucleus and the cytoplasm.
10:07
Exploring Protein-Glycan Interactions: Advances in Nuclear Magnetic Resonance
0 Views •
2025
This NMR-based protocol investigates weak protein-glycan interactions using cyanovirin-N and D-mannose. Combining ligand- and protein-detected methods, it maps binding sites, detects allosteric effects, and identifies encounter complexes. The approach outlines sample preparation and data analysis, offering structural and dynamic insights valuable for glycan-specific diagnostics and recognition mechanisms.
07:40
Disentangling Glycan-Protein Interactions: Nuclear Magnetic Resonance (NMR) to the Rescue
0 Views •
2024
Here, we present a protocol detailing the acquisition, processing, and analysis of a series of NMR experiments aimed at characterizing protein-glycan interactions in solution. Most common ligand-based and protein-based methodologies are outlined, which undoubtedly contribute to the fields of structural glycobiology and molecular recognition studies.
FAQs
Specificity arises when complementary binding domains fit one another and support favorable electrostatic forces. These molecular contacts allow particular proteins to assemble rather than interact indiscriminately, linking partners involved in transcriptional control, DNA maintenance, RNA processing, or nuclear structure. The resulting selectivity helps organize nuclear activities into coordinated regulatory complexes and can determine which cellular process is affected.
Post-translational modifications can alter a protein’s interaction behavior by changing its affinity for a partner, its localization within the nucleus, or its activity. Consequently, the same proteins may associate differently under different molecular states. This provides a regulatory mechanism for adjusting gene regulation, DNA maintenance, RNA processing, or structural organization without requiring a completely new set of proteins.
Stable complexes can provide persistent molecular organization, whereas transient assemblies allow interactions to form and dissociate as regulatory conditions change. This distinction matters because nuclear functions require both durable organization and flexible control. Examining whether a contact is stable or short-lived therefore helps researchers interpret how a protein network supports ongoing nuclear structure or rapidly changing regulatory events.
Researchers use complementary approaches, including co-immunoprecipitation, affinity purification, proximity assays, and fluorescence-based imaging. These methods examine protein association from different experimental perspectives, helping identify interaction partners, detect proteins located near one another, or visualize interaction-related patterns in the nucleus. Combining approaches can strengthen interpretation of nuclear protein networks and distinguish molecular association from broader organizational context.
Proximity assays can reveal that proteins occur near one another, while fluorescence-based imaging can show where interaction-related patterns appear within the nucleus. These spatial perspectives complement biochemical approaches such as co-immunoprecipitation and affinity purification. Together, they help connect a candidate interaction with nuclear organization, localization, and the cellular process in which the associated proteins may participate.
Mapping these networks helps explain how transcription is controlled and how genome stability is maintained. When particular interactions are disrupted, the resulting changes can provide clues about cancer, developmental disorders, and other diseases. Interaction maps can therefore connect molecular defects with nuclear functions and support the identification of potential therapeutic targets for further investigation.