info:eu-repo/semantics/article
Recombinant plant gamma carbonic anhydrase homotrimers bind inorganic carbon
Fecha
2009-11-04Registro en:
Martin, María Victoria; Villarreal, Fernando Daniel; Miras, Isabelle; Navaza, Alda; Haouz, Ahmed; et al.; Recombinant plant gamma carbonic anhydrase homotrimers bind inorganic carbon; Elsevier Science; FEBS Letters; 583; 21; 4-11-2009; 3425-3430
0014-5793
CONICET Digital
CONICET
Autor
Martin, María Victoria
Villarreal, Fernando Daniel
Miras, Isabelle
Navaza, Alda
Haouz, Ahmed
Gonzalez-Lebrero, Rodolfo Martin
Kaufman, Sergio Benjamín
Zabaleta, Eduardo Julian
Resumen
Gamma carbonic anhydrases (gCA) are widespread in Prokaryotes. In Eukaryotes, homologous genes were found only in plant genomes. In Arabidopsis and maize, the corresponding gene products are subunits of mitochondrial Complex I.At present, only gCA homotrimers of Methanosarcina thermophila (CAM) show reversible carbon dioxide (CO2) hydration activity. In the present work, it is shown that recombinant plant Gamma -CA2 could form homotrimers and bind H14CO-3 . However, they are unable to catalyse the reversible hydration of CO2. These results suggest that plant gCAs do not act as carbonic anhydrases but with a related activity possibly contributing to recycle CO2 in the context of photorespiration.
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