ATP binding. Identical to Uncharacterized protein At1g26090, chloroplast precursor [Arabidopsis Thaliana] (GB:Q6DYE4;GB:Q9C605;GB:Q9C657); similar to unnamed protein product [Vitis vinifera] (GB:CAO42079.1); contains domain SSF52540 (SSF52540); contains domain G3DSA:3.40.50.300 (G3DSA:3.40.50.300)