Related Experiment Video
Updated: May 18, 2026
10:40
Analysis of Group IV Viral SSHHPS Using In Vitro and In Silico Methods
Published on: December 21, 2019
Mapping interactions of Chikungunya virus nonstructural proteins
R Sreejith1, Jyoti Rana, Namrata Dudha
1Center for Emerging Diseases, Department of Biotechnology, Jaypee Institute of Information Technology, A-10, Sector 62, Noida 201 307, Uttar Pradesh, India.
Virus Research
|September 7, 2012
Summary
Researchers systematically analyzed interactions between Chikungunya virus (CHIKV) nonstructural proteins (nsPs). Six novel nsP interactions were identified, advancing our understanding of CHIKV replication and pathogenesis.
Area of Science:
- Virology
- Molecular Biology
- Protein Interactions
Background:
- The four nonstructural proteins (nsPs1-4) of Chikungunya virus (CHIKV) are crucial for viral pathogenesis, exhibiting enzymatic activities and interacting with viral and host factors.
- Understanding the specific interactions among these nsPs is essential for elucidating CHIKV replication mechanisms.
Purpose of the Study:
- To systematically investigate and identify all possible pair-wise interactions among the four nsPs of CHIKV.
- To map the interaction network of CHIKV nsPs and compare it with known interactions in related alphaviruses.
Main Methods:
- Yeast two-hybrid assays were employed to screen for potential nsP interactions.
- GST pull-down assays were utilized to confirm specific protein-protein interactions.
- Enzyme-linked immunosorbent assays (ELISA) were performed to validate the identified interactions.
Main Results:
- Six novel protein interactions among CHIKV nsPs were identified.
- Three of these interactions are reported for the first time within the Alphavirus genus.
- The identified interactions form a network suggesting the spatial organization of nsPs in the late replicase complex.
Conclusions:
- This study provides a comprehensive map of nsP interactions in CHIKV, revealing novel associations.
- The findings contribute to understanding the assembly and function of the CHIKV replicase complex.
- The identified interactions offer potential targets for antiviral strategies against CHIKV.
Related Concept Videos
00:56Viral Structure
Viruses are extraordinarily diverse in shape and size, but they all have several structural features in common. All viruses have a core that contains a DNA- or RNA-based genome. The core is surrounded by a protective coat of proteins called the capsid. The capsid is composed of subunits called capsomeres. The capsid and genome-containing core are together known as the nucleocapsid.
02:28Leaky Scanning
During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R stands for...