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Direct interaction with ACR11 is necessary for post-transcriptional control of GLU1-encoded ferredoxin-dependent glutamate synthase in leaves

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Title: Direct interaction with ACR11 is necessary for post-transcriptional control of GLU1-encoded ferredoxin-dependent glutamate synthase in leaves
Authors: Takabayashi, Atsushi Browse this author
Niwata, Akihiro Browse this author
Tanaka, Ayumi Browse this author
Issue Date: 14-Jul-2016
Publisher: Nature Publishing Group
Journal Title: Scientific reports
Volume: 6
Start Page: 29668
Publisher DOI: 10.1038/srep29668
Abstract: Because it plays an essential role in nitrogen (N) assimilation and photorespiration, the glutamine synthetase (GS)/glutamate synthase (GOGAT) system is widely accepted as occupying a central position in leaf N metabolism. However, the regulation of GOGAT at the post-transcriptional level is poorly understood. Here, we show that ACR11, an ACT (acronym for aspartate kinase, chorismate mutase, and TyrA) domain-containing family protein, interacts with Glu1-encoded ferredoxin (Fd)-GOGAT in Arabidopsis chloroplasts. In addition, Arabidopsis acr11 mutants have lost the capability to control Fd-GOGAT levels in response to light/dark diurnal cycles, nitrogen inputs, and changes in photorespiratory activity. Considering that ACR11 has putative glutamine-binding domains, our results indicate that ACR11 is necessary for post-transcriptional control of leaf Glu1-encoded Fd-GOGAT. This regulation takes place through direct interaction of ACR11 and Fd-GOGAT, possibly in an allosteric manner.
Rights: https://creativecommons.org/licenses/by/4.0/
https://creativecommons.org/licenses/by/4.0/
Type: article
URI: http://hdl.handle.net/2115/62712
Appears in Collections:低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 高林 厚史

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