シアノバクテリアのCa<SUP>2+</SUP>/H<SUP>+</SUP> アンチポ-タ-遺伝子のクロ-ニングとその機能解析
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- HOSSAIN Gazi Sakir
- Graduate School of Environmental and Human Sciences, Meijo Univ.
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- WADITEE Rungaroon
- Research Institute, Meijo Univ.
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- NAKAMURA Tatsunosuke
- Faculty of Pharmacy, Niigata Univ. Pharmacy and Applied Life Science
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- SHIKATA Masamitsu
- Shimadzu Co.
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- TAKANO Jun
- Shimadzu Co.
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- TAKABE Teruhiro
- Research Institute, Meijo Univ.
書誌事項
- タイトル別名
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- Isolation and Functional Characterization of Ca<SUP>2+</SUP>/H<SUP>+</SUP> antiporters from Cyanobacteria
抄録
Genome sequences of cyanobacteria revealed the presence of a single Ca2+/H+ antiporter in these organisms. We isolated the putative Ca2+/H+ antiporter gene from Synechocystis sp. PCC 6803 (synCAX) as well as a homologous gene from a halotolerant cyanobacterium Aphanothece halophytica (apCAX). In contrast to plant vacuolar CAXs, the full length apCAX and synCAX genes complemented the Ca2+-sensitive phenotype of an E. coli mutant. ApCAX and synCAX proteins catalyzed specifically the Ca2+/H+ exchange reaction at alkaline pH. Immunological analysis suggested their localization in plasma membranes. The Synechocystis sp. PCC 6803 cells disrupted of synCAX exhibited lower Ca2+ efflux activity and a salt sensitive phenotype. Overexpression of apCAX and synCAX enhanced the salt tolerance of Synechococcus sp. PCC 7942 cells.
収録刊行物
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- 日本植物生理学会年会およびシンポジウム 講演要旨集
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日本植物生理学会年会およびシンポジウム 講演要旨集 2004 (0), 115-115, 2004
日本植物生理学会
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詳細情報 詳細情報について
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- CRID
- 1390001205627779456
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- NII論文ID
- 130006988087
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- データソース種別
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- JaLC
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可