Rubisco Accumulation Factor1-like (RAFL) interacts with RAF1 to mediate Rubisco assembly in Arabidopsis.
Biochem Biophys Res Commun
; 701: 149609, 2024 Mar 15.
Article
em En
| MEDLINE
| ID: mdl-38316092
ABSTRACT
Rubisco catalysis a rate-limiting step in photosynthesis. It is a complex of eight large (RbcL) and eight small (RbcS) subunits. The biogenesis of Rubisco requires assembly chaperones. One of the key Rubisco assembly chaperones, Rubisco accumulation factor1 (RAF1), assembled as a dimer, acts downstream of chaperonin-assisted RbcL folding by stabilizing RbcL antiparallel dimers for assembly into RbcL8 complexes. In maize, lacking RAF1 causes Rubisco deficient and seedling lethal. A RAF1 homologue, RAF1-like (RAFL), has been detected in Arabidopsis. We found RAFL shares 61.98 % sequence similarity with RAF1. They have similar conserved domains, predicted 3D structures and gene expression pattern. Phylogenetic tree analysis showed that RAFL and RAF1 only present in analyzed dicots, while only one copy of RAF presented in monocots, mosses and green algae. Combined analysis by three different protein-protein interaction methods showed that RAFL interacts with RAF1 both in vivo and in vitro. Taken together, we conclude that RAFL and RAF1 are close paralogous genes, and they can form heterodimer and/or homodimers to mediate Rubisco assembly in Arabidopsis.
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Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Ribulose-Bifosfato Carboxilase
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Arabidopsis
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Proteínas de Arabidopsis
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
Biochem Biophys Res Commun
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
China