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I obtained a Biochemistry degree in 1998 at Faculdade de Ciências, Porto University. Afterward, I started a PhD in Chemistry at the same institution focusing on the enzymatic mechanisms of firefly luciferase. This PhD resulted from a collaboration between Departamento de Química da Faculdade de Ciências and Serviço de Bioquímica da Faculdade de Medicina da Universidade do Porto. During my PhD I was able to explain why coenzyme A, used as an additive in commercial cocktails, was able to stimulate the luminescence reaction. Throughout my PhD I also worked as a "Monitor" at the Serviço de Bioquímica da Faculdade de Medicina. I was lecturer for "Laboratórios de Bioquímica" in the classes of 2003/04, 2004/05 and 2005/06. After my PhD, I joined the laboratory of Prof Woodland Hastings at Molecular Cellular Biology (MCB), Harvard University, USA, where I pursued studies on bioluminescence. In 2008, after Prof. Hastings jubilation, I transferred to the lab of Prof. Alfred Goldberg at the Department of Cell Biology at Harvard Medical School. At the Goldberg Lab I was able to propose a mechanism for the functioning of the AAA+ hexameric ring PAN, a 19S proteasome homologue, and show that although PAN has six identical subunits it binds ATPs in pairs, and its subunits exhibit three conformational states with high, low, or no affinity for ATP. In 2009 I returned to Portugal and initialized studies with a small protein isolated from the parasite Fasciola hepatica (FH8). Sequence analysis revealed that FH8 had two EF-hand Ca2+-binding motifs. I showed that the protein binds Ca2+, promoting large conformational changes, and behaves like a Ca2+ sensor. In 2011, I relocated to Salvador Ventura Lab and I was able to demonstrate that Tim15, involved in the chaperoning of mtHsp70 in the mitochondrial matrix, shifts from an essentially unfolded peptide to a folded peptide upon Zn2+ coordination. Moreover, I established unambiguously that Tim15 folding is essential for its role as mtHsp70 chaperone. I also studied the oxidative folding of Cox19, a small twin CX9C motif protein, involved in the copper efflux to the mitochondrial Intermembrane space. I demonstrated that Cox19 when fully reduced is unfolded but when imported into the IMS, it rapidly folds as a consequence of its oxidation catalyzed by Mia40. Mia40s role is to funnel a rough folding landscape, skipping the accumulation of kinetic traps. In 2014, I moved to the Boisbouvier lab, Institut de Biologie Strucuturale, Grenoble, France, where I initialized studies on ClpP, a bacterial protease also present in mitochondria and an important drug target. In the same year, I was invited by Prof Alfred Golberg, Harvard Medical School, to optimize HTS assays at Glaxo Smith and Kline Open Lab aimed at the discovery of inhibitors for the ClpCP1P2 complex from Mtb. A collaboration project involving Institut de Biologie Strucuturale, Harvard Medical School and Glaxo Smith and Kline was initiated. I am last corresponding author in the 3 publications derived from this project (articles 1,3 and 4). Since 2019 I am an independent researcher at Faculdade de Medicina da Universidade do Porto/i3S Porto, Portugal. During my research career, I published 28 articles in peer-reviewed journals, including journals as Cell, Science Advances, Nature Communications and Angewandte Chemie, with a total of more than 1100 citations (google scholar, h-index 17). 17 were published as first author and 9 were published as corresponding author. I was also involved in the supervision of two master students and as described above worked as a lecturer at the Faculdade de Medicina da Universidade do Porto.
Identification

Personal identification

Full name
Hugo Fraga

Citation names

  • Fraga, Hugo

Author identifiers

Ciência ID
0218-0C99-2A78
ORCID iD
0000-0001-7677-4086
Google Scholar ID
https://scholar.google.com/citations?user=ZmZZ8c0AAAAJ&hl=en

Email addresses

  • hfraga@med.up.pt (Professional)

Knowledge fields

  • Natural sciences - Biological Sciences - Biochemistry

Languages

Language Speaking Reading Writing Listening Peer-review
English Advanced (C1) Advanced (C1) Advanced (C1) Advanced (C1)
French Beginner (A1) Intermediate (B1) Beginner (A1) Beginner (A1)
Spanish; Castilian Intermediate (B1) Advanced (C1) Intermediate (B1) Intermediate (B1)
German Intermediate (B1) Intermediate (B1) Intermediate (B1) Intermediate (B1) Intermediate (B1)
Catalan Beginner (A1) Beginner (A1) Beginner (A1) Beginner (A1)
Education
Degree Classification
2020/06/01 - 2026/06/01
Ongoing
Mestrado Integrado em Medicina (Mestrado)
Universidade do Porto, Portugal
2007/01/19
Concluded
Doutoramento em Química/Bioquímica (Doutoramento)
Universidade do Porto Faculdade de Ciências, Portugal
"Mecanismo das reacções catalizadas pela luciferase de pirilampo" (THESIS/DISSERTATION)
Aprovado por unanimidade
1998/09/01 - 2002/06/01
Concluded
Bioquímica (Licenciatura)
Major in Especialização em Industrial Alimentares
Universidade do Porto Faculdade de Ciências, Portugal
"n/a" (THESIS/DISSERTATION)
15
Affiliation

Science

Category
Host institution
Employer
2022/08/16 - Current Auxiliary Researcher (Research) Universidade do Porto Instituto de Investigação e Inovação em Saúde, Portugal
2019/07/15 - 2022/08/15 Auxiliary Researcher (Research) Universidade do Porto Faculdade de Medicina, Portugal
Universidade do Porto Faculdade de Medicina, Portugal
2015/03/01 - 2019/07/01 Researcher (Research) Harvard Medical School, United States
Harvard Medical School Department of Cell Biology, United States
2014/01/01 - 2015/02/28 Postdoc (Research) Institut de Biologie Structurale, France
Institut de Biologie Structurale, France
2011/05/01 - 2013/12/31 Postdoc (Research) Universitat Autònoma de Barcelona, Spain
Universitat Autònoma de Barcelona Departament de Bioquímica i Biologia Molecular, Spain
2009/05/01 - 2011/04/01 Postdoc (Research) Universidade do Porto Instituto de Biologia Molecular e Celular, Portugal
Universidade do Porto Instituto de Biologia Molecular e Celular, Portugal
2007/06/01 - 2009/05/01 Postdoc (Research) Harvard Medical School, United States
2007/01/01 - 2007/06/01 Postdoc (Research) Harvard University Department of Molecular and Cellular Biology, United States
Harvard University Department of Molecular and Cellular Biology, United States
2006/05/01 - 2006/12/31 Visiting Researcher (Research) Harvard University Department of Molecular and Cellular Biology, United States
Harvard University Department of Molecular and Cellular Biology, United States
2005/05/01 - 2005/07/31 Visiting Researcher (Research) Connecticut College, United States
Connecticut College, United States

Teaching in Higher Education

Category
Host institution
Employer
2003/06/01 - 2006/06/30 Tutor (University Teacher) Universidade do Porto Faculdade de Medicina, Portugal
Universidade do Porto Faculdade de Medicina, Portugal
Projects

Contract

Designation Funders
2017/01/01 - 2017/12/31 Innovative EM/NMR approach for the characterization of the drug target ClpP
PPID301
Principal investigator
Universidade do Porto Faculdade de Medicina, Portugal
Concluded
2011/01/01 - 2012/12/31 Projecto Estratégico - LA 2 - 2011-2012
PEst-C/SAU/LA0002/2011
Universidade do Porto Instituto de Biologia Molecular e Celular, Portugal

Instituto Nacional de Engenharia Biomédica, Portugal
Fundação para a Ciência e a Tecnologia
Concluded

Other

Designation Funders
2020/12/01 - 2021/12/31 Exploring a new drug target against Tuberculosis - data processing
18091 Instruct
Principal investigator
Concluded
2020/06/01 - 2021/12/31 Exploring a new drug target against Tuberculosis
15695 iNEXT-Discovery (Tech-Sci)
Principal investigator
Concluded
Outputs

Publications

Journal article
  1. Weinhäupl, Katharina; Gragera, Marcos; Bueno-Carrasco, M. Teresa; Arranz, Rocío; Krandor, Olga; Akopian, Tatos; Soares, Raquel; et al. "Structure of the drug target ClpC1 unfoldase in action provides insights on antibiotic mechanism of action". Journal of Biological Chemistry 298 11 (2022): 102553. http://dx.doi.org/10.1016/j.jbc.2022.102553.
    10.1016/j.jbc.2022.102553
  2. Diego F. Gauto; Pavel Macek; Duccio Malinverni; Hugo Fraga; Matteo Paloni; Iva Sucec; Audrey Hessel; Paul Schanda. "Functional control of a 0.5 MDa TET aminopeptidase by a flexible loop revealed by MAS-NMR". Nature Communications (2022):
    In press
  3. Felix, Jan; Weinhäupl, Katharina; Chipot, Christophe; Dehez, François; Hessel, Audrey; Gauto, Diego F.; Morlot, Cecile; et al. "Mechanism of the allosteric activation of the ClpP protease machinery by substrates and active-site inhibitors". Science Advances 5 9 (2019): eaaw3818. http://dx.doi.org/10.1126/sciadv.aaw3818.
    10.1126/sciadv.aaw3818
  4. Gauto, Diego F.; Macek, Pavel; Barducci, Alessandro; Fraga, Hugo; Hessel, Audrey; Terauchi, Tsutomu; Gajan, David; et al. "Aromatic Ring Dynamics, Thermal Activation, and Transient Conformations of a 468 kDa Enzyme by Specific 1H–13C Labeling and Fast Magic-Angle Spinning NMR". Journal of the American Chemical Society 141 28 (2019): 11183-11195. http://dx.doi.org/10.1021/jacs.9b04219.
    10.1021/jacs.9b04219
  5. Fraga, H.; Rodriguez, B.; Bardera, A.; Cid, C.; Akopian, T.; Kandror, O.; Park, A.; et al. "Development of high throughput screening methods for inhibitors of ClpC1P1P2 from Mycobacteria tuberculosis". Analytical Biochemistry 567 (2019): 30-37. http://www.scopus.com/inward/record.url?eid=2-s2.0-85058144398&partnerID=MN8TOARS.
    10.1016/j.ab.2018.12.004
  6. Weinhäupl, K.; Brennich, M.; Kazmaier, U.; Lelievre, J.; Ballell, L.; Goldberg, A.; Schanda, P.; Fraga, H.. "The antibiotic cyclomarin blocks arginine-phosphate–induced millisecond dynamics in the N-terminal domain of ClpC1 from Mycobacterium tuberculosis". Journal of Biological Chemistry 293 22 (2018): 8379-8393. http://www.scopus.com/inward/record.url?eid=2-s2.0-85048056975&partnerID=MN8TOARS.
    10.1074/jbc.RA118.002251
  7. Fraga H; Pujols J; Gil-Garcia M; Roque A; Bernardo-Seisdedos G; Santambrogio C; Bech-Serra JJ; et al. "Disulfide driven folding for a conditionally disordered protein.". Scientific reports (2017): http://europepmc.org/abstract/med/29208936.
    10.1038/s41598-017-17259-4
  8. Fraga H; Arnaud CA; Gauto DF; Audin M; Kurauskas V; Macek P; Krichel C; et al. "Solid-State NMR H-N-(C)-H and H-N-C-C 3D/4D Correlation Experiments for Resonance Assignment of Large Proteins.". Chemphyschem : a European journal of chemical physics and physical chemistry (2017): http://europepmc.org/abstract/med/28792111.
    10.1002/cphc.201700572
  9. Martínez-Oliván J; Fraga H; Arias-Moreno X; Ventura S; Sancho J. "Intradomain Confinement of Disulfides in the Folding of Two Consecutive Modules of the LDL Receptor.". PloS one (2015): http://europepmc.org/abstract/med/26168158.
    10.1371/journal.pone.0132141
  10. Fraga H; Ventura S. "Influence of Cytoplasmatic Folding on Mitochondrial Import.". Current medicinal chemistry (2015): http://europepmc.org/abstract/med/25760085.
    10.2174/0929867322666150311153413
  11. Fraga, Hugo; Graña-Montes, Ricardo; Illa, Ricard; Covaleda, Giovanni; Ventura, Salvador. "Association Between Foldability and Aggregation Propensity in Small Disulfide-Rich Proteins". Antioxidants & Redox Signaling 21 3 (2014): 368-383. http://dx.doi.org/10.1089/ars.2013.5543.
    10.1089/ars.2013.5543
  12. Fraga H; Bech-Serra JJ; Canals F; Ortega G; Millet O; Ventura S. "The mitochondrial intermembrane space oxireductase mia40 funnels the oxidative folding pathway of the cytochrome C oxidase assembly protein cox19.". (2014): http://europepmc.org/abstract/med/24569988.
    10.1074/jbc.M114.553479
  13. Fraga, Hugo; Ventura, Salvador. "Oxidative Folding in the Mitochondrial Intermembrane Space in Human Health and Disease". International Journal of Molecular Sciences 14 2 (2013): 2916-2927. http://dx.doi.org/10.3390/ijms14022916.
    10.3390/ijms14022916
  14. Fraga, Hugo. "Zinc induced folding is essential for TIM15 activity as an mtHsp70 chaperone". Biochimica et Biophysica Acta (BBA) - General Subjects (2013): http://dx.doi.org/10.1016/j.bbagen.2012.10.002.
    10.1016/j.bbagen.2012.10.002
  15. Fraga, Hugo; Ventura, Salvador. "Protein Oxidative Folding in the Intermembrane Mitochondrial Space: More than Protein Trafficking". Current Protein & Peptide Science 13 3 (2012): 224-231. http://dx.doi.org/10.2174/138920312800785012.
    10.2174/138920312800785012
  16. David M. Smith; Hugo Fraga; Christian Reis; Alfred Goldberg. "Allosteric Regulation of Nucleotide Binding to the Proteasomal ATPases". Biophysical Journal 102 3 (2012): 20a-21a. https://doi.org/10.1016%2Fj.bpj.2011.11.137.
    10.1016/j.bpj.2011.11.137
  17. Fraga, Hugo. "Enzymatic synthesis of mono and dinucleoside polyphosphates". Biochimica et Biophysica Acta (BBA) - General Subjects (2011): http://dx.doi.org/10.1016/j.bbagen.2011.09.010.
    10.1016/j.bbagen.2011.09.010
  18. Smith, David M.; Fraga, Hugo; Reis, Christian; Kafri, Galit; Goldberg, Alfred L.. "ATP Binds to Proteasomal ATPases in Pairs with Distinct Functional Effects, Implying an Ordered Reaction Cycle". Cell 144 4 (2011): 526-538. http://dx.doi.org/10.1016/j.cell.2011.02.005.
    10.1016/j.cell.2011.02.005
  19. Fraga, Hugo. "FH8 - a small EF-hand protein from Fasciola hepatica". FEBS Journal (2010): http://dx.doi.org/10.1111/j.1742-4658.2010.07912.x.
    10.1111/j.1742-4658.2010.07912.x
  20. Mota, A.; Silva, P.; Neves, D.; Lemos, C.; Calhau, C.; Torres, D.; Martel, F.; et al. "Characterization of rat heart alkaline phosphatase isoenzymes and modulation of activity". Brazilian Journal of Medical and Biological Research 41 7 (2008): 600-609. http://dx.doi.org/10.1590/s0100-879x2008000700009.
    10.1590/s0100-879x2008000700009
  21. Fraga, Hugo. "Pyrophosphate and tripolyphosphate affect firefly luciferase luminescence because they act as substrates and not as allosteric effectors". FEBS Journal (2008): http://dx.doi.org/10.1111/j.1742-4658.2008.06309.x.
    10.1111/j.1742-4658.2008.06309.x
  22. Fraga, Hugo. "Firefly luminescence: A historical perspective and recent developments". Photochemical & Photobiological Sciences 7 2 (2008): 146. http://dx.doi.org/10.1039/b719181b.
    10.1039/b719181b
  23. Branchini, Bruce R.; Ablamsky, Danielle M.; Murtiashaw, Martha H.; Uzasci, Lerna; Fraga, Hugo; Southworth, Tara L.. "Thermostable red and green light-producing firefly luciferase mutants for bioluminescent reporter applications". Analytical Biochemistry 361 2 (2007): 253-262. http://dx.doi.org/10.1016/j.ab.2006.10.043.
    10.1016/j.ab.2006.10.043
  24. Fraga, Hugo. "Firefly Luciferase Produces Hydrogen Peroxide as a Coproduct in Dehydroluciferyl Adenylate Formation". ChemBioChem (2006): http://dx.doi.org/10.1002/cbic.200500443.
    10.1002/cbic.200500443
  25. Fraga, Hugo. "Coenzyme A affects firefly luciferase luminescence because it acts as a substrate and not as an allosteric effector". FEBS Journal (2005): http://dx.doi.org/10.1111/j.1742-4658.2005.04895.x.
    10.1111/j.1742-4658.2005.04895.x
  26. Fraga, Hugo; Fontes, Rui; Esteves da Silva, Joaquim C. G.; Hugo Fraga; Rui Fontes; Joaquim C. G. Esteves da Silva. "Synthesis of Luciferyl Coenzyme A: A Bioluminescent Substrate for Firefly Luciferase in the Presence of AMP". Angewandte Chemie International Edition 44 22 (2005): 3427-3429. http://dx.doi.org/10.1002/anie.200462934.
    10.1002/anie.200462934
  27. Hugo Fraga; Joaquim C.G. Esteves da Silva; Rui Fontes. "Chemical synthesis and firefly luciferase produced dehydroluciferyl-coenzyme A". Tetrahedron Letters 45 10 (2004): 2117-2120. https://doi.org/10.1016%2Fj.tetlet.2004.01.050.
    10.1016/j.tetlet.2004.01.050
  28. Fraga, Hugo. "Identification of Luciferyl Adenylate and Luciferyl Coenzyme A Synthesized by Firefly Luciferase". ChemBioChem (2004): http://dx.doi.org/10.1002/cbic.200300735.
    10.1002/cbic.200300735
  29. Hugo Fraga; Joaquim C.G. Esteves da Silva; Rui Fontes; Fraga H; Esteves da Silva JC; Fontes R. "pH opposite effects on synthesis of dinucleoside polyphosphates and on oxidation reactions catalyzed by firefly luciferase". FEBS Letters 543 1-3 (2003): 37-41. https://doi.org/10.1016%2Fs0014-5793%2803%2900382-x.
    10.1016/s0014-5793(03)00382-x
Preprint
  1. Federico Napoli; Jia-Ying Guan; Charles-Adrien Arnaud; Pavel Macek; Hugo Fraga; Cécile Breyton; Paul Schanda. "Deuteration of proteins boosted by cell lysates: high-resolution amide and Ha MAS NMR without re-protonation bottleneck". 2024. https://doi.org/10.1101/2024.01.08.574509.
    10.1101/2024.01.08.574509
  2. Diego F. Gauto; Pavel Macek; Duccio Malinverni; Hugo Fraga; Matteo Paloni; Iva Sucec; Audrey Hessel; et al. "Functional control of a 0.5 MDa TET aminopeptidase by a flexible loop revealed by MAS NMR". 2021. https://doi.org/10.1101/2021.06.29.450317.
    10.1101/2021.06.29.450317
Activities

Oral presentation

Presentation title Event name
Host (Event location)
2022/03/11 Exploring a new drug target against Mycobacterium tuberculosis PCISBIO DAY
PCISBIO DAY (Lisbon, Portugal)
2021/12/14 Exploring a new drug target against Mycobacterium tuberculosis Instruct-ERIC Webinar Series: Structure Meets Function
Instruct (Portugal)
2021/12/14 Exploring a new drug target against Tuberculosis - Instruct-ERIC Webinar Series: Structure Meets Function Instruct-ERIC Webinar Series: Structure Meets Function
Instruct Portugal (Portugal)
2016/10/10 Screening for inhibitors of ClpC1P1P2 and ClpXP1P2 from Mycobacterium tuberculosis GSK Open Lab Meeting
Glaxo Smith and Kline (Tres Cantos, Spain)
2013/06/13 Cox19 folding - Insights into mitochondrial Intermembrane Space oxidative folding X_Jornada_Cientifica_del_Departament_de_Bioquimica_i_Biologia_Celular
Universitat Autonoma de Barcelona (Bellaterra, Spain)
2003/06/28 Synthesis of luciferyl-coenzymeA by firefly luciferase 2nd Mediterranean Meeting on Photochemistry
(Giardini Naxos, Italy)

Supervision

Thesis Title
Role
Degree Subject (Type)
Institution / Organization
2013/01/01 - 2013/01/01 Estudi del plegament oxidatiu de proteïnes riqes en ponts disulfur
Co-supervisor
Biochemistry, Molecular Biology and Biomedicine (Master)
Universitat Autònoma de Barcelona, Spain
2012/06/01 - 2012/09/01 Oxidative Folding Pathway of a Model MIA40- COX19
Co-supervisor
Biochemistry, Molecular Biology and Biomedicine (Master)
Universitat Autònoma de Barcelona, Spain

Event participation

Activity description
Type of event
Event name
Institution / Organization
2017/03/06 - 2027/03/09 Advanced Isotopic Labelling Methods for Integrated Structural Biology
Conference
Advanced Isotopic Labelling Methods for Integrated Structural Biology
Institut de Biologie Structurale, France
2019/10/30 - 2019/10/30 11th Symposium on Metabolism
Conference
11 th Symposium on Metabolism
Universidade do Porto Faculdade de Medicina, Portugal
2018/11/20 - 2018/11/20 GSK Open Lab Meeting
Conference
GSK Open Lab Meeting
GlaxoSmithkline Investigación y Desarrollo, Spain
2018/06/10 - 2018/06/14 EMBO Workshop: Bacterial Persistence and Antimicrobial Therapy
Conference
Bacterial Persistence and Antimicrobial Therapy
European Molecular Biology Laboratory, Germany
2015/11/16 - 2015/11/16 GSK Open Lab Meeting
Conference
GSK Open Lab Meeting
GlaxoSmithKline España, Spain
2010/06/26 - 2010/07/06 35th FEBS Congress
Conference
35th FEBS Congress
Federation of European Biochemical Societies, United Kingdom
2010/05/06 - 2010/05/07 I3S Retreat
Conference
I3S Retreat
Universidade do Porto Instituto de Investigação e Inovação em Saúde, Portugal
2003/09/18 - 2003/09/20 Jornadas Ibéricas de Fotoquímica
Conference
Jornadas Ibéricas de Fotoquímica
Universidade de Santiago de Compostela, Spain

Jury of academic degree

Topic
Role
Candidate name (Type of degree)
Institution / Organization
2022/06/26 Dissecting the mechanism of the receptor export module of the peroxisomal import machinery
(Thesis) Main arguer
Ana Margarida Ferreira Guimarães Pedrosa, (PhD)
Universidade do Porto Instituto de Ciências Biomédicas Abel Salazar, Portugal

Conference scientific committee

Conference name Conference host
2019/11/30 - 2019/11/30 11th Symposium on Metabolism Faculdade de Medicina, Universidade do Porto

Scientific expedition

Activity description Institution / Organization
2023/09/11 - 2023/09/15 Mosbri Project 2023-183 Institut Pasteur Département Biologie cellulaire et Infection, France
Distinctions

Award

2016 Pilot Project Award

Other distinction

2016 Marie Curie Postdoctoral Fellowship
2013 Postdoctoral Fellowship
2012 Young Scientists Program fellowship
2006 Prémio Ilídio Pinho para Investigação Científica na pré-graduação