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Updated: Jun 5, 2026

Identification of Protein Interaction Partners in Mammalian Cells Using SILAC-immunoprecipitation Quantitative Proteomics
Published on: July 6, 2014
Identification of proteins interacting with human SP110 during the process of viral infections
Lei Cai1, Ying Wang, Jing-Fang Wang
1Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Centre for Systems Biomedicine, Shanghai JiaoTong University, 800 Dongchuan Road, Shanghai, China. lcai@gordonlifescience.org
Abstract:
Human SP110 plays an important role in resisting intracellular pathogens, and hence has become an important drug target for preventing intracellular pathogen diseases, such as tuberculosis, hepatic veno-occlusive disease, and intracellular cancers. Unfortunately, so far little is known about the interactions of SP110 with the other proteins in a cell, which is considered to be the key for revealing its action mechanism and mediated pathway. Using both the genetic and structural analyses as well as the segment-docking approach, we have identified two proteins: the human remodeling and spacing factor 1 (RSF1) and the activating transcription factor 7 interacting protein (ATF7IP). They are very likely interacting with human SP110 during the process of viral infections. Owing to the close relationship of RSF1 with the chromatin remodeling and ATF7IP with the chromatin formation, it is logical to infer that human SP110 may be involved in the chromatin remodeling and formation as well. These findings may provide useful insights into the development of new drugs for treating and preventing intracellular pathogen diseases.
Insights
Human SP110 protein interactions were identified to combat intracellular pathogens. Researchers found SP110 interacts with RSF1 and ATF7IP, suggesting a role in chromatin remodeling for disease treatment.
Area of Science:
- Molecular Biology
- Immunology
- Cell Biology
Background:
- Human SP110 is crucial for resisting intracellular pathogens and is a potential drug target for diseases like tuberculosis and cancer.
- Understanding SP110 protein interactions is key to elucidating its mechanism of action and pathways.
Purpose of the Study:
- To identify proteins interacting with human SP110.
- To explore the potential role of SP110 in cellular processes related to pathogen resistance.
Main Methods:
- Genetic analysis
- Structural analysis
- Segment-docking approach
Main Results:
- Identified interactions between human SP110 and two proteins: remodeling and spacing factor 1 (RSF1) and activating transcription factor 7 interacting protein (ATF7IP).
- These interactions are likely significant during viral infections.
- Inferred a potential role for SP110 in chromatin remodeling and formation due to its interaction partners.
Conclusions:
- The identified protein interactions provide novel insights into SP110 function.
- Findings suggest SP110's involvement in chromatin dynamics.
- These discoveries may aid in developing new therapeutic strategies for intracellular pathogen diseases.
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