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ORIGINAL ARTICLE Jung-Il Cho Nayeon Ryoo Seho Ko

Jung-Il Cho ∆ Nayeon Ryoo ∆ Seho Ko
Sang-Kyu Lee ∆ Junok Lee ∆ Ki-Hong Jung
Youn-Hyung Lee ∆ Seong Hee Bhoo ∆ Joris Winderickx
Gynheung An ∆ Tae-Ryong Hahn ∆ Jong-Seong Jeon
Structure, expression, and functional analysis of the hexokinase gene
family in rice (Oryza sativa L.)
Received: 12 December 2005 / Accepted: 30 January 2006 / Published online: 22 March 2006
” Springer-Verlag 2006
Abstract Hexokinase (HXK) is a dual-function enzyme
that both phosphorylates hexose to form hexose
6ņphosphate and plays an important role in sugar
sensing and signaling. To investigate the roles of hexo-
kinases in rice growth and development, we analyzed
rice sequence databases and isolated ten rice hexokinase
cDNAs, OsHXK1 (Oryza sativa Hexokinase 1) through
OsHXK10. With the exception of the single-exon gene
OsHXK1, the OsHXKs all have a highly conserved
genomic structure consisting of nine exons and eight
introns. Gene expression profiling revealed that OsH-


Source: An, Gynheung - Department of Life Science, Pohang University of Science and Technology


Collections: Biotechnology; Biology and Medicine