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. 2019 Nov 21;8(12):533. doi: 10.3390/plants8120533

Figure 7.

Figure 7

Plant RadA resembles the bacterial enzyme. (A) Structural organization of AtRadA in comparision to bacterial RadA. AtRadA shares 63% amino acid similarity with RadA from S. pneumoniae and complete amino acid identity in the catalytic amino acids. Bacterial RadA harbor a zinc finger (ZnF), a Rec-A like ATPase domain with a unique KNRFG motif, and a region homologous to the Lon protease. (B) Crystal structure of the Rec-A like ATPase and Lon protease domains of RadA from S. pneumoniae showing its resemblance to a hexameric helicase. The ZnF domain is not present in the crystal structure.