Arabidopsis NAI2 is an ER body component for the ER body formation
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- Yamada Kenji
- Dept. of Cell Biol., Natl. Inst. for Basic Biol.
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- Nagano Atsushi
- Dept. of Sci., Kyoto Univ.
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- Nishina Momoko
- Dept. of Cell Biol., Natl. Inst. for Basic Biol.
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- Hara-Nishimura Ikuko
- Dept. of Sci., Kyoto Univ.
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- Nihsimura Mikio
- Dept. of Cell Biol., Natl. Inst. for Basic Biol.
Bibliographic Information
- Other Title
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- シロイヌナズナのNAI2はERボディに局在するERボディ形成因子である
Abstract
The endoplasmic reticulum (ER) body found in Arabidopsis is a spindle-shaped structure that specifically accumulates high levels of PYK10, a beta-glucosidase that bears an ER-retention signal. The molecular mechanisms underlying the formation of the ER body remain obscure. We isolated an ER body-deficient mutant in Arabidopsis seedlings that we termed nai2 (1). The NAI2 gene encodes a member of a unique protein family that is only found in the Brassicaceae. NAI2 localizes to the ER body and a reduction in NAI2 gene expression elongates ER bodies and reduces their numbers. NAI2 deficiency does not affect PYK10 mRNA levels but reduces the level of PYK10 protein, which becomes uniformly diffused throughout the ER. These observations indicate that NAI2 is a key factor that enables ER body formation and the accumulation of PYK10 in ER bodies of Arabidopsis.<br>(1) K. Yamada et al., (2008) Plant Cell. 20, 2529-2540.
Journal
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- Plant and Cell Physiology Supplement
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Plant and Cell Physiology Supplement 2009 (0), 0427-0427, 2009
The Japanese Society of Plant Physiologists
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Details 詳細情報について
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- CRID
- 1390001205633023488
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- NII Article ID
- 130006995000
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed