Journal
BIOCHEMISTRY
Volume 53, Issue 41, Pages 6452-6462Publisher
AMER CHEMICAL SOC
DOI: 10.1021/bi5007546
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- National Institute of Diabetes and Digestive and Kidney Diseases [DK083284]
- University of Pittsburgh School of Medicine
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Self-assembling proteins represent potential scaffolds for the organization of enzymatic activities. The alkaline protease repeats-in-toxin (RTX) domain from Pseudomonas aeruginosa undergoes multiple structural transitions in the presence and absence of calcium, a native structural cofactor. In the absence of calcium, this domain is capable of spontaneous, ordered polymerization, producing amyloid-like fibrils and large two-dimensional protein sheets. This polymerization occurs under near-physiological conditions, is rapid, and can be controlled by regulating calcium in solution. Fusion of the RTX domain to a soluble protein results in the incorporation of engineered protein function into these macromolecular assemblies. Applications of this protein sequence in bacterial adherence and colonization and the generation of biomaterials are discussed.
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