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Doctoral Thesis
DOI
https://doi.org/10.11606/T.46.2010.tde-08112010-093327
Document
Author
Full name
Anderson Garbuglio de Oliveira
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2010
Supervisor
Committee
Stevani, Cassius Vinicius (President)
Campa, Ana
Colepicolo Neto, Pio
Kato, Massuo Jorge
Sartorelli, Patrícia
Title in Portuguese
Estudo mecanístico da bioluminescência de fungos
Keywords in Portuguese
Bioluminescência
Fungos
Luciferase
Luciferina
Abstract in Portuguese
Esta tese descreve como é possível obter emissão de luz in vitro enzimaticamente, a partir de extratos quente e frio de diferentes espécies de fungos bioluminescentes, o que indica também um mecanismo comum de bioluminescência em todos esses organismos. Dados cinéticos sugerem um mecanismo enzimático em duas etapas e corroboram a hipótese enzimática de Airth e Foerster, da década de 1960. Finalmente, utilizando-se extratos quente e frio foi possível também isolar a luciferina fúngica e obter sua massa molecular (298,1837 m/z). Essa substância isolada emite luz enzimaticamente in vitro, sendo que a sobreposição do espectro de emissão e do espectro de bioluminescência do fungo confirma que essa substância é a luciferina fúngica.
Title in English
Mechanistic study on fungi bioluminescence
Keywords in English
Bioluminescence
Fungi
Luciferase
Luciferin
Abstract in English
This thesis describes how in vitro light emission can be enzymatically obtained from the hot and cold extracts assay using different species of fungi, which also indicates a common mechanism of light emission for all these organisms. Kinetic data suggest a consecutive two-step mechanism and corroborate the 1960's enzymatic proposal of Airth and Foerster. Finally, using hot and cold extracts assay we were also able to purify and to determine the molecular weight of the fungal luciferin (298.1837 m/z). The isolated substance emits light enzymatically in vitro, whose light emission spectrum matches with the fungal bioluminescence one thus confirming that the substance is the fungal luciferin
 
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Publishing Date
2011-01-14
 
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