Structure and Function of Imelysin-Like Proteins in Bacterial Iron Uptake
Author Information
Author(s): Xu Qingping, Rawlings Neil D., Farr Carol L., Chiu Hsiu-Ju, Grant Joanna C., Jaroszewski Lukasz, Klock Heath E., Knuth Mark W., Miller Mitchell D., Weekes Dana, Elsliger Marc-André, Deacon Ashley M., Godzik Adam, Lesley Scott A., Wilson Ian A.
Primary Institution: Joint Center for Structural Genomics, La Jolla, California, United States of America
Hypothesis
Imelysin-like proteins have evolved from a common ancestor and likely have a conserved function in iron uptake.
Conclusion
The study reveals that imelysin-like proteins are not peptidases and have distinct structural features that suggest a role in iron uptake.
Supporting Evidence
- Imelysin-like proteins define a superfamily of bacterial proteins likely involved in iron uptake.
- The study determined the first crystal structures of two imelysin-like proteins.
- Both structures are highly similar despite low sequence similarity.
- Imelysin-like proteins are not peptidases and have evolved distinct structural features.
Takeaway
Scientists studied proteins that help bacteria take in iron, finding that these proteins have unique shapes and likely work together in this process.
Methodology
The study involved determining the crystal structures of two imelysin-like proteins using high-throughput structural genomics methods.
Limitations
The biochemical functions and substrate specificity of imelysin-like proteins remain poorly understood.
Digital Object Identifier (DOI)
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