The nuclear cap-binding protein complex is not essential for nonsense-mediated mRNA decay (NMD) in plants.
Author(s) -
Agnieszka DzikiewiczKrawczyk,
Paulina Piontek,
Zofia SzweykowskaKulinska,
Artur Jarmołowski
Publication year - 2008
Publication title -
acta biochimica polonica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.452
H-Index - 78
eISSN - 1734-154X
pISSN - 0001-527X
DOI - 10.18388/abp.2008_3047
Subject(s) - nonsense mediated decay , mutant , arabidopsis thaliana , gene , messenger rna , biology , microbiology and biotechnology , wild type , splice , genetics , rna splicing , rna
In this study we investigated whether in plants, like in mammals, components of the nuclear cap-binding protein complex (CBC) are involved in nonsense-mediated mRNA decay (NMD). We selected several genes producing at least two alternatively spliced mRNA variants: one with a premature termination codon (PTC+) and another without it (PTC-). For each gene the PTC+/PTC- ratio was calculated using RT-PCR and direct sequencing in four Arabidopsis thaliana lines: wild type, the NMD mutant atupf3-1 and two CBC mutants: cbp20 and abh1. Whereas in the NMD mutant the ratios of PTC+/PTC- splice variants were higher than in wild-type plants, the two CBC mutants investigated showed no change in the PTC+/PTC- ratios. Our results suggest that neither CBP20 nor CBP80 is involved in NMD in A. thaliana.
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