2007年12月
AUREOCHROME, a photoreceptor required for photomorphogenesis in stramenopiles
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
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- 巻
- 104
- 号
- 49
- 開始ページ
- 19625
- 終了ページ
- 19630
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1073/pnas.0707692104
- 出版者・発行元
- NATL ACAD SCIENCES
A blue light (BL) receptor was discovered in stramenopile algae Vaucheria frigida (Xanthophyceae) and Fucus distichus (Phaeophyceae). Two homologs were identified in Vaucheria; each has one basic region/leucine zipper (bZIP) domain and one light-oxygen-voltage (LOV)-sensing domain. We named these chromoproteins AUREOCHROMEs (AUREO1 and AUREO2). AUREO1 binds flavin mononucleotide via its LOV domain and forms a 390-nm-absorbing form, indicative of formation of a cysteinyl adduct to the C(4a) carbon of the flavin mononucleotide upon BL irradiation. The adduct decays to the ground state in approximate to 5 min. Its bZIP domain binds the target sequence TGACGT. The AUREO1 target binding was strongly enhanced by BL treatment, implying that AUREO1 functions as a BL-regulated transcription factor. The function of AUREO1 as photoreceptor for BL-induced branching is elucidated through RNAi experiments. RNAi of AUREO2 unexpectedly induces sex organ primordia instead of branches, implicating AUREO2 as a subswitch to initiate development of a branch, but not a sex organ. AUREO sequences are also found in the genome of the marine diatom Thalassiosira pseudonana (Bacillariophyceae), but are not present in green plants. AUREOCHROME therefore represents a BL receptor in photosynthetic stramenopiles.
- リンク情報
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- DOI
- https://doi.org/10.1073/pnas.0707692104
- CiNii Articles
- http://ci.nii.ac.jp/naid/80018045747
- PubMed
- https://www.ncbi.nlm.nih.gov/pubmed/18003911
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000251525800081&DestApp=WOS_CPL
- ID情報
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- DOI : 10.1073/pnas.0707692104
- ISSN : 0027-8424
- CiNii Articles ID : 80018045747
- PubMed ID : 18003911
- Web of Science ID : WOS:000251525800081