Hi there
Can anybody tell what are the most effective ways to modify only the N-terminal end of a protein without affecting other amino acids? Also, which methods work best when producing proteins on a larger (industrial) scale?
Regards
Dear Navneet
The most effective way to modify only the N-terminal end of a protein depends on your need for precision and scalability. For lab-scale research with high selectivity, chemical methods are highly effective, while enzymatic strategies are often more suitable for industrial-scale production.
Are you looking towards a precise, user-defined N-terminus (e.g., Gly, Ser, His, Ala)? Will you be removing this functional Tag ?
If you are able to share more about the specific protein you are working with or the type of modification you wish to make, I may be able to provide more detailed information.
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My primary goal is to improve the stability of the protein. Secondary goal is to increase the localization of protein in specific regions (for which we already have the analytical data). We are in phase of transition b/w bench to Industry transfer.
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In order to modify the N terminus for stability you can use both Chemcial and Enzymatic methods
- Chemical: Acylation, reductive amination, NHS-ester coupling, click chemistry
- Enzymatic: Sortase-mediated ligation, transglutaminase coupling, formylglycine-generating enzyme, N-myristoyltransferase, or N-terminal acetyltransferase
In order to localize proteins, adding N-terminal signal peptides or tags can target proteins to mitochondria, ER, or secretion pathways. You can choose according to the organelle you are targeting.
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