PTAC3 (PLASTID TRANSCRIPTIONALLY ACTIVE3); DNA binding. similar to pentatricopeptide (PPR) repeat-containing protein [Arabidopsis thaliana] (TAIR:AT2G31400.1); similar to putative chloroplast RNA processing protein [Oryza sativa (japonica cultivar-group)] (GB:AAM93724.1); similar to hypothetical protein OsI_032777 [Oryza sativa (indica cultivar-group)] (GB:EAY78818.1); similar to unnamed protein product [Vitis vinifera] (GB:CAO38774.1); contains InterPro domain DNA-binding SAP; (InterPro:IPR003034)