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Structure-function activity study of the unusual protein MAPK1-109aa encoded by the non-coding circular RNA
Jit Mondal1, Sima Biswas1, Sreekanya Roy2
1Department of Biochemistry and Biophysics, University of Kalyani, Nadia, Kalyani, 741235, West Bengal, India.
Journal of Molecular Graphics & Modelling
|June 6, 2025
Summary
Circular RNAs like hsa_circ_0004872 can code for proteins, such as MAPK1-109aa, which plays a role in gastric cancer. This study details its interaction with MEK1 and suggests therapeutic potential.
Area of Science:
- Molecular Biology
- Genomics
- Cancer Research
Background:
- Circular RNAs (circRNAs) are non-coding RNA molecules with emerging roles in tumorigenesis.
- Some circRNAs, like hsa_circ_0004872, can encode proteins, including MAPK1-109aa.
- MAPK1-109aa is implicated in the gastric cancer pathway by interacting with MEK1.
Purpose of the Study:
- To elucidate the structural details and folding patterns of MAPK1-109aa.
- To provide insights into the residue-level interactions between MAPK1-109aa and MEK1.
- To explore potential roles of MAPK1-109aa in pathways beyond gastric cancer.
Main Methods:
- Protein structure and folding analysis.
- Molecular interaction studies.
- Network analysis for pathway prediction.
Main Results:
- Detailed residue-level interactions between MAPK1-109aa and MEK1 were elucidated.
- MAPK1-109aa's inhibitory effect on MAPK1 phosphorylation and downstream signaling in gastric cancer was confirmed.
- Network analysis suggested MAPK1-109aa's involvement in neurodegenerative disease pathways.
Conclusions:
- This study provides the first residue-level insights into MAPK1-109aa-MEK1 interactions in gastric cancer.
- MAPK1-109aa shows potential as a therapeutic target for gastric cancer.
- MAPK1-109aa may also be involved in other disease pathways, such as neurodegeneration.
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