The Identification of A ROS Responsive Motif that is regulated by snoRNP in Arabidopsis
Cheng, H.; Sun, M.; Guo, D.
Show abstract
A GGGCC motif (site II like motif) was identified from the upstream sequences of reactive oxygen species (ROS) and light induced genes in Arabidopsis. This motif is highly enriched within the -50 to -250 bp region of the induced genes, and it is also specifically distributed in the same region in mouse and human genome. EMSA experiments revealed that several nuclear factors (NFs) bind to this motif, and the binding activities altered under H2O2 treatment. Two C/D family snoRNP proteins, namely fibrillarin 2 and NOP56, were identified from the site II like motif binding NFs. Several C/D family snoRNA, including R63, U24a and Z15, were also cloned from the motif binding NFs. These data suggest new regulatory roles of snoRNP in Arabidopsis.
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