Structure of Zinc-Substituted Rubredoxin B from Mycobacterium tuberculosis
Author Information
Author(s): Garry W. Buchko, Stephen N. Hewitt, Alberto J. Napuli, Wesley C. Van Voorhis, Peter J. Myler
Primary Institution: Seattle Structural Genomics Center for Infectious Disease
Hypothesis
The study aims to determine the solution structure and biophysical properties of zinc-substituted rubredoxin B (Rv3250c) from Mycobacterium tuberculosis.
Conclusion
The study reveals that the zinc-substituted rubredoxin B is stable to high temperatures and has a structure that may aid in drug design against tuberculosis.
Supporting Evidence
- Rubredoxin B is a small iron-binding protein that plays a role in electron-transfer processes.
- The structure shows a three-stranded antiparallel β-sheet and a metal tetrahedrally coordinated to cysteine residues.
- Circular dichroism spectroscopy indicates that the protein is stable to at least 353 K.
Takeaway
Scientists studied a protein from a germ that causes tuberculosis to understand how it works, which could help create new medicines.
Methodology
The protein was expressed in E. coli, purified, and characterized using NMR spectroscopy and circular dichroism.
Digital Object Identifier (DOI)
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