InterPro domain: IPR006957

Ethylene insensitive 3 (EIN3) proteins are a family of plant DNA-binding proteins that regulate transcription in response to the gaseous plant hormone ethylene, and are essential for ethylene-mediated responses. In the presence of ethylene, dark-grown dicotyledonous seedlings undergo dramatic morphological changes collectively known as the 'triple response'. In Arabidopsis, these changes consist of a radial swelling of the hypocotyl, an exaggeration in the curvature of the apical hook, and the inhibition of cell elongation in the hypocotyl and root [ 1 , 2 ].

1. Activation of the ethylene gas response pathway in Arabidopsis by the nuclear protein ETHYLENE-INSENSITIVE3 and related proteins. Cell 89, 1133-44
2. The ethylene-response pathway: signal perception to gene regulation. Curr. Opin. Plant Biol. 2, 352-8