PIE1 (PHOTOPERIOD-INDEPENDENT EARLY FLOWERING 1); ATP binding / DNA binding / helicase. similar to transcriptional activator, putative [Arabidopsis thaliana] (TAIR:AT3G57300.1); similar to SWR1 complex protein, SNF2 family DNA-dependent ATPase [Physcomitrella patens subsp. patens] (GB:EDQ72602.1); similar to hypothetical protein OsJ_007722 [Oryza sativa (japonica cultivar-group)] (GB:EAZ24239.1); similar to putative photoperiod independent early flowering1 [Oryza sativa (japonica cultivar-group)] (GB:BAD07677.1); contains InterPro domain SNF2-related; (InterPro:IPR000330); contains InterPro domain HAS subgroup (InterPro:IPR013999); contains I