Σάββατο 2 Σεπτεμβρίου 2017

Comparative expression profiling of AtRAD5B and AtNDL1: Hints towards a role in G protein mediated signaling

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Publication date: Available online 1 September 2017
Source:Gene Expression Patterns
Author(s): Nisha Khatri, Swati Singh, Nasmeen Hakim, Yashwanti Mudgil
Arabidopsis AtRAD5B encodes for a putative helicase of the class SWItch/Sucrose Non-Fermentable (SWI/SNF) ATPases. We identified AtRAD5B as an interactor of N-MYC DOWNREGULATED-LIKE1 (AtNDL1) in a yeast two-hybrid screen. AtNDL1 is a G protein signaling component which regulates auxin transport and gradients together with GTP binding protein beta 1 (AGB1). Auxin gradients are known to recruit SWI/SNF remodeling complexes to the chromatin and regulate expression of genes involved in flower and leaf formation. In current study, a comparative spatial and temporal co-expression/localization analysis of AtNDL1, AGB1 with AtRAD5B was carried out in order to explore the possibility of their coexistence in a common signaling network. Translational fusion (GUS) of AtNDL1 and AtRAD5B in seedlings and reproductive organs revealed that both shared similar expression patterns with the highest expression observed in male reproductive organs. Moreover, they shared similar domains of localization in roots, suggesting their potential functioning together in reproductive and root development processes. This study predicts the existence of a signaling network involving AtNDL1, AGB1 with AtRAD5B.



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