3D Structure Generation, Molecular Dynamics and Docking Studies of IRHOM2 Protein Involved in Cancer & Rheumatoid...

Area of Science:

• Structural Biology
• Computational Chemistry
• Drug Discovery

Background:

• The short-lived membrane protein IRHOM2 regulates Epidermal Growth Factor Receptor (EGFR) signaling and metalloproteases.
• IRHOM2's involvement in cancer and rheumatoid arthritis highlights its potential as a therapeutic target.
• The three-dimensional structure of IRHOM2 has not been previously reported.

Purpose of the Study:

• To generate and validate the 3D structure of the IRHOM2 protein.
• To identify potential drug candidates that can inhibit IRHOM2 activity.
• To explore IRHOM2 as a therapeutic target for cancer and rheumatoid arthritis.

Main Methods:

• Protein structure modeling using the I-TASSER server.
• Structure validation via the Structural Analysis and Verification Server (SAVES) and Ramachandran plot analysis.
• Molecular dynamics simulation, docking analysis, and virtual screening using Glide with a library of 24,552 compounds.

Main Results:

• A validated 3D model of IRHOM2 was generated, with 99.7% of residues in favored Ramachandran plot regions.
• Virtual screening identified interactions, including hydrogen bonding and hydrophobic contacts, crucial for protein-ligand binding.
• The top-ranked molecule exhibited a glide g-score of -12.565 kcal/mol and glide e-model score of -74.967, with 3 hydrogen bonds and 11 hydrophobic contacts.

Conclusions:

• The study provides the first 3D structure of IRHOM2, offering insights into its function and potential as a drug target.
• A promising compound was identified as a potential inhibitor of IRHOM2, suggesting therapeutic possibilities for cancer and rheumatoid arthritis.
• Further in vitro studies are necessary to validate the therapeutic potential of the identified compound.