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Expression, purification and functional characterization of the recombinant HydA1 hydrogenase from Chlamydomonas reinhardtii

Scheda Sintetica

Autore: Simone Morra
Relatore: Gianfranco Gilardi
Università: Università degli Studi di Torino
Facoltà: Facoltà di Scienze Matematiche, Fisiche e Naturali
Corso: Laurea Spec. in Scienze Biomolecolari
Data di Discussione: 06/10/2009
Voto: 110 cum laude
Disciplina: Biochimica
Tipo di Tesi: Sperimentale
Altri Relatori: Francesca Valetti
Lingua: Inglese
Grande Area: Area Scientifica
Dignità di Stampa: Si

Descrizione:
Hydrogenases are a class of enzymes responsible for hydrogen gas production in many microorganisms. Their study is considered of great interest for biotechnological applications to support a fossil fuel-free world. To this end, the construction of artificial devices that are able to use solar energy to produce hydrogen (the so-called “nano-leaf”) has been proposed. Because of its relatively simple structure and high specific activity, Chlamydomonas reinhardtii HydA1 hydrogenase (CrHydA1) is an enzyme of outstanding interest for this purpose. Thus, the aim of this study is to produce and characterize CrHydA1.
Since CrHydA1 is quickly inactivated by oxygen, this study required the development of protocols for CrHydA1 production, manipulation and storage in strictly anoxic conditions. The recombinant expression system in Escherichia coli developed at the National Renewable Energy Laboratory (NREL), USA, was used to produce and purify CrHydA1 to homogeneity with a specific activity of abo ...

 
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