Artículo
Two phosphoenolpyruvate carboxykinases with differing biochemical properties in Chlamydomonas reinhardtii
Fecha de publicación:
02/2023
Editorial:
Elsevier Science
Revista:
FEBS Letters
ISSN:
0014-5793
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Phosphoenolpyruvate carboxykinase (PEPCK) catalyses the reversible reaction of decarboxylation and phosphorylation of oxaloacetate (OAA) to generate phosphoenolpyruvate (PEP) and CO2 playing mainly a gluconeogenic role in green algae. We found two PEPCK isoforms in Chlamydomonas reinhardtii and we cloned, purified and characterised both enzymes. ChlrePEPCK1 is more active as decarboxylase than ChlrePEPCK2. ChlrePEPCK1 is hexameric and its activity is affected by citrate, phenylalanine and malate, while ChlrePEPCK2 is monomeric and it is regulated by citrate, phenylalanine and glutamine. We postulate that the two PEPCK isoforms found originate from alternative splicing of the gene or regulated proteolysis of the enzyme. The presence of these two isoforms would be part of a mechanism to finely regulate the biological activity of PEPCKs.
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Articulos(CEFOBI)
Articulos de CENTRO DE EST.FOTOSINTETICOS Y BIOQUIMICOS (I)
Articulos de CENTRO DE EST.FOTOSINTETICOS Y BIOQUIMICOS (I)
Articulos(IPROBYQ)
Articulos de INST. DE PROCESOS BIOTECNOLOGICOS Y QUIMICOS ROSARIO
Articulos de INST. DE PROCESOS BIOTECNOLOGICOS Y QUIMICOS ROSARIO
Citación
Torresi, Florencia; Rodriguez, Fernanda Mariana; Gomez Casati, Diego Fabian; Martín, Mariana; Two phosphoenolpyruvate carboxykinases with differing biochemical properties in Chlamydomonas reinhardtii; Elsevier Science; FEBS Letters; 597; 4; 2-2023; 585-597
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