Antonio Artigues, Ph.D.
Director, Mass Spectrometry Laboratory
Research Associate Professor
Department of Biochemistry and Molecular Biology
University of Navarre, Spain, BS 1979; MS 1982
University of the Balearic Islands, Spain, Ph.D., 1987
Virginia Commonwealth University, Postdoctoral Fellow, 1988-90
University of Alicante, Fellow, 1991
University of Missouri-Kansas City, Research Instructor, 1992-1996
University of Missouri-Kansas City, Supervisor of Macromolecular Analysis Core Facilities, 1996-2001
University of Missouri-Kansas City, Research Assistant Professor and Deputy Director for Research Development,, 2001-2004
University of Kansas Medical Center, Research Assistant Professor and Director of the Mass Spectrometry Laboratory, 2004-2009
University of Kansas Medical Center, Research Associate Professor and Director of the Mass Spectrometry Laboratory, 2009-present
Publications: Click here
Research Areas of Interest
- Protein-protein interactions
- Enzyme structure and relationship of enzyme structure to function
- Protein folding
- Mechanisms of Protein transport across membranes
Newly made proteins must achieve their native configuration before they can play their physiological roles in the cell. These processes are of particular importance for mitochondria. Of the roughly 1100 different proteins present in the mitochondrion only 13 are encoded by the mitochondrial DNA and synthesized in the mitochondrial matrix. The remaining proteins are encoded by the nuclear genome, transcribed in the nucleus, translated in the cytoplasm and imported into the mitochondrion, where they fold to their native structure. Understanding these processes at the molecular level is of the utmost importance because alterations in protein folding or mitochondrial protein translocation cause disease.
The model system used to study this process is the eukaryotic isoenzymes of aspartate aminotransferase. Two isoenzymes, one cytosolic, the other mitochondrial, exist in all eukaryotic cells. These proteins have extensive amino acid similarity, an almost identical three dimensional structure, are encoded by the genomic DNA, and are synthesized in the cytoplasm. Despite these similarities the mature proteins have different folding kinetics and different sub-cellular locations. Our main goals are to understand; (a) the molecular basis for the distinct folding behavior of these homologous proteins, and (b) to elucidate the mechanisms for the differences observed in their interactions with the cellular machineries in charge of protein sorting, import and folding.