Localization of the ethylene receptor ETR1 to the endoplasmic reticulum of Arabidopsis
Abstract
The ethylene receptor ETR1 of Arabidopsis contains transmembrane domains responsible for ethylene binding and membrane localization. Sequence analysis does not provide information as to which membrane system of the plant cell ETR1 is localized. Examination by aqueous two-phase partitioning, sucrose density-gradient centrifugation, and immunoelectron microscopy indicates that ETR1 is predominantly localized to the endoplasmic reticulum. Localization of ETR1 showed no change following a cycloheximide chase. Ethylene binding by ETR1 did not affect localization to the endoplasmic reticulum, based upon analysis of plants treated with the ethylene precursor 1-aminocyclopropane-1-carboxylic acid and by examination of a mutant receptor that does not bind ethylene. Determinants within the amino-terminal half of ETR1 are sufficient for targeting to and retention at the endoplasmic reticulum. These data support a central role of the plant endoplasmic reticulum. in hormone perception and signal transduction.
Publication Date
5-1-2002
Journal Title
Journal of Biological Chemistry
Publisher
American Society for Biochemistry and Molecular Biology
Digital Object Identifier (DOI)
10.1074/jbc.M201286200
Scientific Contribution Number
2115
Document Type
Article
Rights
© 2002 by The American Society for Biochemistry and Molecular Biology, Inc. Published in the U.S.A.
Recommended Citation
Chen, Yi-Feng; Randlett, Melynda D.; Findell, Jennifer L.; and Schaller, G. Eric, "Localization of the ethylene receptor ETR1 to the endoplasmic reticulum of Arabidopsis" (2002). Journal of Biological Chemistry. 86.
https://scholars.unh.edu/nhaes/86