TITLE:
Comparative Analysis of the 5’ Flanking Region in Arabidopsis and O. sative RP Genes Revealed Conserved and Divergent Regulating Mechanisms
AUTHORS:
Donggen Zhou, Jie Luo
KEYWORDS:
Ribosome, Motif, Genes Expression, Mechanism
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.10 No.6,
June
28,
2019
ABSTRACT: Ribosome is one of the most abundant organelles in
all living cells and plays a crucial role in cell growth. Synthesis of
ribosomal components is tightly related with the change of growth conditions.
We have comparatively analyzed the 5’ flanking region of ribosomal protein (RP)
genes in Arabidopsis and O. sativa.
In both Arabidopsis and O. sativa, there are two putative
transcriptional factor binding motifs (telo box and site II elements)
overrepresented in the proximal promoter region with a strong positional bias
in most of the RP genes, which suggests the conserved mechanism of
transcription-level control in RP genes of these two organisms. Tri-nucleotide
repeats motif CTT and CCG were also common in 5’ flanking region of RP genes in Arabidopsis and O. sativa. However, we only found CCG repeat motif was enriched in O. sativa RP genes and most of them
were clustered in the 5’ UTR region. This finding reveals molecular mechanism
for divergent regulation of RP genes in Arabidopsis and O. sativa, and gives the possible
clue to the mechanism of controlling O.
sativa RP genes expression at the translation level.