Journal Article

A Novel Fe Deficiency-Responsive Element (FeRE) Regulates the Expression of <i>atx1</i> in <i>Chlamydomonas reinharditii</i>

Xiaowen Fei and Xiaodong Deng

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 48, issue 10, pages 1496-1503
Published in print October 2007 | ISSN: 0032-0781
Published online October 2007 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/pcp/pcm110
A Novel Fe Deficiency-Responsive Element (FeRE) Regulates the Expression of atx1 in Chlamydomonas reinharditii

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  • Biochemistry
  • Molecular and Cell Biology
  • Plant Sciences and Forestry

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We investigated the promoter region of atx1, which encodes a copper chaperone in response to iron deficiency induction. Deletion analysis of the promoter region from the 5′ and 3′ ends revealed that the –532/–461 and –320/–276 regions were necessary and sufficient for iron deficiency-inducible expression. Further deletion analysis showed that two of the Fe deficiency-responsive elements (FeREs) localized within the –532/–511 and –306/–276 regions, in which AtxFeRE1 at –529/–515 (GTCGCACTGGCATGT) and AtxFeRE2 at –300/–286 (GCAGCGATGGCATTT) had been identified, respectively, with a conserved sequence of GNNGCNNTGGCATNT, differing from all known FeREs found in other organisms.

Keywords: Chlamydomonas reinharditii; atx1; Fe deficiency-responsive element

Journal Article.  4068 words.  Illustrated.

Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

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