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Updated: May 4, 2026
Expression, Purification, Crystallization, and Enzyme Assays of Fumarylacetoacetate Hydrolase Domain-Containing Proteins
Published on: June 20, 2019
Cloning, expression, purification, crystallization and preliminary X-ray diffraction analysis of recombinant human
Ricardo Augusto Pereira de Pádua1, Maria Cristina Nonato1
1Departamento de Física e Química, Faculdade de Ciências Farmacêuticas de Ribeirão Preto - Universidade de São Paulo, Avenida do Café s/n, 14040-903 Ribeirão Preto-SP, Brazil.
Human fumarase (HsFH), a key enzyme in energy metabolism, was structurally analyzed. Understanding its deficiency mechanisms is crucial for treating genetic disorders like hereditary leiomyomatosis and renal cell cancer.
Area of Science:
- Biochemistry
- Structural Biology
- Genetics
Background:
- Human fumarase (HsFH) is a crucial enzyme in the citric acid cycle, vital for cellular energy metabolism.
- Genetic variations in the fumarase gene are linked to diseases including hereditary leiomyomatosis and renal cell cancer.
Purpose of the Study:
- To elucidate the molecular mechanisms underlying fumarase deficiency in genetic disorders.
- To obtain a high-resolution structure of human fumarase for further investigation.
Main Methods:
- Cloning of the human fumarase gene (HsFH) into a pET-28a vector.
- Heterologous expression in Escherichia coli and purification via nickel-affinity chromatography.
- Crystallization using vapor-diffusion and X-ray diffraction at a synchrotron source.
Main Results:
- Successful purification and crystallization of human fumarase.
- Determination of the human fumarase structure at 2.1 Å resolution using molecular replacement.
Conclusions:
- The determined structure provides a foundation for understanding fumarase function and deficiency.
- This structural information is essential for developing therapeutic strategies for fumarase-related genetic diseases.
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