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Structural characterization of an essential protein complex in cell wall formation

Grant number: 13/02451-0
Support Opportunities:Scholarships in Brazil - Doctorate (Direct)
Effective date (Start): March 01, 2013
Effective date (End): July 31, 2017
Field of knowledge:Biological Sciences - Biochemistry - Biochemistry of Microorganisms
Principal Investigator:Andrea Dessen de Souza e Silva
Grantee:Mayara Mayele Miyachiro
Host Institution: Centro Nacional de Pesquisa em Energia e Materiais (CNPEM). Ministério da Ciência, Tecnologia e Inovações (Brasil). Campinas , SP, Brazil
Associated research grant:11/52067-6 - Assembly and structure of macromolecular complexes involved in bacterial cell wall: biosynthesis and virulence, AP.SPEC
Associated scholarship(s):14/00570-4 - Structural characterization of an essential protein complex for bacterial cell wall formation, BE.EP.DD


The biosynthesis of bacterial cell wall has been studied for several decades to identify targets for the development of antibiotics. However, the emergence of multidrug-resistant bacterial leads to the need to investigate and characterize new molecular targets. The synthesis of peptidoglycan, a major component of the bacterial cell wall, involves the participation of macromolecular complexes that may include cytoplasmic proteins, periplasmic and membrane. The goal of this project is carrying out the structural characterization of soluble periplasmic complex PBP2: MreC and membrane protein MraY transferase because they are essential components for the synthesis of peptidoglycan. The techniques that will be used include the expression and purification of recombinant proteins soluble and membrane, crystallization, and resolution synchrotron analysis of protein structures. The research group led by Andréa Dessen is present in two locations: at the National Laboratory of Biosciences (LNBio) in Campinas-Brazil (4 members), and at the Institut the Biologie structurale in Grenoble-France (10 members). The Thematic Project intitled "Structuring macromolecular complexes bacterial wall" will be done in Campinas, where the student Mayara Mayele Miyachiro will develop most of her thesis work. However, because the expertise of the Grenoble´s group in production and purification of membrane proteins, it would be remarkable opportunity to the student to spend some time in Grenoble to learn crucial techniques to structurally characterize the membrane protein MraY, one of the objectives of this project. The results achieved will contribute to identify novel macromolecular targets which may be used for the development of more efficient antibacterial agents. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
LADDOMADA, FEDERICA; MIYACHIRO, MAYARA M.; DESSEN, ANDREA. Structural Insights into Protein-Protein Interactions Involved in Bacterial Cell Wall Biogenesis. ANTIBIOTICS-BASEL, v. 5, n. 2, . (11/52067-6, 13/02451-0)
MIYACHIRO, MAYARA M.; GRANATO, DANIELA; TRINDADE, DANIEL MARAGNO; EBEL, CHRISTINE; PAES LEME, ADRIANA FRANCO; DESSEN, ANDREA. Complex Formation between Mur Enzymes from Streptococcus pneumoniae. BIOCHEMISTRY, v. 58, n. 30, p. 3314-3324, . (17/12436-9, 11/52067-6, 13/02451-0)
LADDOMADA, FEDERICA; MIYACHIRO, MAYARA M.; JESSOP, MATTHEW; PATIN, DELPHINE; JOB, VIVIANA; MENGIN-LECREULX, DOMINIQUE; LE ROY, ALINE; EBEL, CHRISTINE; BREYTON, CECILE; GUTSCHE, IRINA; et al. The MurG glycosyltransferase provides an oligomeric scaffold for the cytoplasmic steps of peptidoglycan biosynthesis in the human pathogen Bordetella pertussis. SCIENTIFIC REPORTS, v. 9, . (11/52067-6, 13/02451-0, 17/12436-9)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
MIYACHIRO, Mayara Mayele. Biophysical characterization of an essential protein complex for bacterial cell wall formation. 2018. Doctoral Thesis - Universidade Estadual de Campinas (UNICAMP). Instituto de Biologia Campinas, SP.

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