SPA3 (SPA1-RELATED 3); signal transducer. similar to SPA4 (SPA1-RELATED 4), signal transducer [Arabidopsis thaliana] (TAIR:AT1G53090.2); similar to SPA4 (SPA1-RELATED 4), signal transducer [Arabidopsis thaliana] (TAIR:AT1G53090.1); similar to unnamed protein product [Vitis vinifera] (GB:CAO39286.1); similar to unnamed protein product [Vitis vinifera] (GB:CAO69753.1); similar to hypothetical protein OsI_003524 [Oryza sativa (indica cultivar-group)] (GB:EAY75677.1); contains InterPro domain WD40 repeat-like (InterPro:IPR011046); contains InterPro domain Serine/threonine protein kinase; (InterPro:IPR002290); contains InterPro domain Protein kina