DNA gyrase subunit A family protein. Identical to Probable DNA gyrase subunit A, chloroplast/mitochondrial precursor (GYRA) [Arabidopsis Thaliana] (GB:Q9CAF6;GB:Q9SG75); similar to TOPII (TOPOISOMERASE II) [Arabidopsis thaliana] (TAIR:AT3G23890.2); similar to TOPII (TOPOISOMERASE II), ATP binding / DNA binding / DNA topoisomerase (ATP-hydrolyzing) [Arabidopsis thaliana] (TAIR:AT3G23890.1); similar to Probable DNA gyrase subunit A, chloroplast/mitochondrial precursor (GB:Q7XZF7); similar to putative DNA gyrase subunit [Oryza sativa (japonica cultivar-group)] (GB:AAP73860.1); similar to DNA gyrase subunit A, chloroplast/mitochondrial precursor