Abstract
In the plant Arabidopsis, ethylene signaling involves at least two putativereceptors, both of which resemble the ‘two-component’ regulators known almost exclusively in bacteria. Downstream in the pathway is a putative serine/threonine protein kinase related to the animal Raf protein kinases. This novel combination of signaling proteins has parallels with the postulated osmolarity-response pathway in yeast.
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