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Biophysical studies of the structure/function of antimicrobial peptides and enzymes isolated from extremophile organisms

Grant number:15/50347-2
Support Opportunities:Regular Research Grants
Start date: October 01, 2015
End date: March 31, 2018
Field of knowledge:Biological Sciences - Biophysics - Molecular Biophysics
Agreement: BBSRC, UKRI - FAPPA
Principal Investigator:Ana Paula Ulian de Araujo
Grantee:Ana Paula Ulian de Araujo
Principal researcher abroad:Bonnie Ann Wallace
Institution abroad: University of London , England
Host Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
City of the host institution:São Carlos

Abstract

This project would use novel developments for spectroscopic characterization of these AMP in liposomes, lipid films and lipid monolayers to establish the mechanism of action and optimize the design of novel related peptides as bacteriocins. The project will also focus on the identification and characterisation of new hyper-stable enzymes isolated from petrochemical sources. Extremophiles isolated from hot oilfield waters produce a range pf enzymes that exhibit both thermostability and stability in non- aqueous solvents, that give them potential for use in industrial applications where their unique properties are compatible with bioprocessing and biomodification requirements. This project will examine the thermal stability and environmental stability factors associated with enzymes from extremophile isolates using a range of novel spectroscopic methods, including SRCD and fluorescence. The functional enzymatic properties would be correlated with structural features, in particular in organic, lipophilic and other non-aqueous milleux. (AU)

Articles published in Agência FAPESP Newsletter about the research grant:
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Scientific publications (7)
(The scientific publications listed on this page originate from the Web of Science or SciELO databases. Their authors have cited FAPESP grant or fellowship project numbers awarded to Principal Investigators or Fellowship Recipients, whether or not they are among the authors. This information is collected automatically and retrieved directly from those bibliometric databases.)
KUMAGAI, PATRICIA S.; DEMARCO, RICARDO; LOPES, JOSE L. S.. Advantages of synchrotron radiation circular dichroism spectroscopy to study intrinsically disordered proteins. EUROPEAN BIOPHYSICS JOURNAL WITH BIOPHYSICS LETTERS, v. 46, n. 7, SI, p. 599-606, . (15/50347-2)
FELIZATTI, ANA P.; ZERAIK, ANA E.; BASSO, LUIS G. M.; KUMAGAI, PATRICIA S.; LOPES, JOSE L. S.; WALLACE, B. A.; ARAUJO, ANA P. U.; DEMARCO, RICARDO. Interactions of amphipathic alpha-helical MEG proteins from Schistosoma mansoni with membranes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES, v. 1862, n. 3, . (14/09361-9, 14/00206-0, 18/19546-7, 15/50347-2)
LOPES, JOSE L. S.; YONEDA, JULIANA S.; MARTINS, JULIA M.; DEMARCO, RICARDO; JAMESON, DAVID M.; CASTRO, ALINE M.; BOSSOLAN, NELMA R. S.; WALLACE, B. A.; ARAUJO, ANA P. U.. Environmental Factors Modulating the Stability and Enzymatic Activity of the Petrotoga mobilis Esterase (PmEst). PLoS One, v. 11, n. 6, . (15/50347-2)
KUMAGAI, PATRICIA S.; SOUSA, VICTOR K.; DONATO, MARESSA; ITRI, ROSANGELA; BELTRAMINI, LEILA M.; ARAUJO, ANA P. U.; BUERCK, JOCHEN; WALLACE, B. A.; LOPES, JOSE L. S.. Unveiling the binding and orientation of the antimicrobial peptide Plantaricin 149 in zwitterionic and negatively charged membranes. EUROPEAN BIOPHYSICS JOURNAL WITH BIOPHYSICS LETTERS, v. 48, n. 7, p. 621-633, . (18/19546-7, 13/07600-3, 15/50347-2)
KUMAGAI, PATRICIA S.; DEMARCO, RICARDO; LOPES, JOSE L. S.. Advantages of synchrotron radiation circular dichroism spectroscopy to study intrinsically disordered proteins. EUROPEAN BIOPHYSICS JOURNAL WITH BIOPHYSICS LETTERS, v. 46, n. 7, p. 8-pg., . (15/50347-2)
KUMAGAI, PATRICIA S.; GUTIERREZ, RAISSA F.; LOPES, JOSE L. S.; MARTINS, JULIA M.; JAMESON, DAVID; CASTRO, ALINE M.; MARTINS, LUIZ F.; DEMARCO, RICARDO; BOSSOLAN, NELMA R. S.; WALLACE, B. A.; et al. Characterization of esterase activity from an Acetomicrobium hydrogeniformans enzyme with high structural stability in extreme conditions. EXTREMOPHILES, v. 22, n. 5, p. 781-793, . (15/50347-2)
DA HORA, G. C. A.; ARCHILHA, N. L.; LOPES, J. L. S.; MUELLER, D. M.; COUTINHO, K.; ITRI, R.; SOARES, T. A.. Membrane negative curvature induced by a hybrid peptide from pediocin PA-1 and plantaricin 149 as revealed by atomistic molecular dynamics simulations. SOFT MATTER, v. 12, n. 43, p. 8884-8898, . (15/50347-2)