The Role of N-Terminal Valine in Stabilizing Xylanase from Bacillus sp. NG-27
Author Information
Author(s): Bhardwaj Amit, Leelavathi Sadhu, Mazumdar-Leighton Sudeshna, Ghosh Amit, Ramakumar Suryanarayanarao, Reddy Vanga S.
Primary Institution: International Centre for Genetic Engineering and Biotechnology
Hypothesis
How does the partially exposed N-terminal valine residue affect the stability of xylanase under extreme conditions?
Conclusion
The study found that the N-terminal valine residue is crucial for the stability of xylanase, affecting its resistance to thermal and alkaline conditions.
Supporting Evidence
- The study demonstrated that changing the first amino acid from valine to glycine made the enzyme less stable.
- Mutants with more hydrophobic residues at the N-terminus showed better stability.
- Xylanase activity was significantly affected by the stability of the N-terminal region.
Takeaway
The first part of a protein can be really important for keeping it stable, especially when it's hot or in harsh conditions.
Methodology
The researchers created various mutants of xylanase by altering the first amino acid and tested their stability under different conditions.
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website