Article
Tetramerization and cooperativity in Plasmodium falciparum glutathione S-transferase are mediated by atypic loop 113-119.
The Journal of biological chemistry - 14 Aug 2009
Liebau Eva, Dawood Kutayba F, Fabrini Raffaele, Fischer-Riepe Lena, Perbandt Markus, Stella Lorenzo, Pedersen Jens Z, Bocedi Alessio, Petrarca Patrizia, Federici Giorgio, Ricci Giorgio
Abstract excerpt
Glutathione S-transferase of Plasmodium falciparum (PfGST) displays a peculiar dimer to tetramer transition that causes full enzyme inactivation and loss of its ability to sequester parasitotoxic hemin. Furthermore, binding of hemin is modulated by a cooperative mechanism. Site-directed mutagenesis, steady-state kinetic experiments, and fluorescence anisotropy have been used to verify the possible involvement of...
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