Identification of a tyrosine phosphatase involved in the response to mechanical injury in leaves of Ricinus communis.
Protein Pept Lett
; 18(1): 30-5, 2011 Jan.
Article
en En
| MEDLINE
| ID: mdl-20955174
ABSTRACT
Plants defend themselves against biotic or abiotic stress by triggering intracellular signaling pathways that regulate gene expression and responses to the offending agent. Phosphorylation and dephosphorylation represent major mechanisms for the regulation of plant defense pathways. Therefore, MAP kinases and phosphatases have been the focus of many studies in this area. This study identified three phosphatase activities, namely RcPPase I, II and III. Wounding increased the activity levels of RcPPase III, while the activities of RcPPase I and II remained constant compared to the control. N-terminal partial amino acid sequence, biochemical characterization with use of specific substrates and inhibitors indicated that the RcPPase III belong to the family of tyrosine phosphatases (PTPs).
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Ricinus communis
/
Proteínas Tirosina Fosfatasas
/
Hojas de la Planta
Tipo de estudio:
Diagnostic_studies
Idioma:
En
Revista:
Protein Pept Lett
Asunto de la revista:
BIOQUIMICA
Año:
2011
Tipo del documento:
Article
País de afiliación:
Brasil