This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
PDB gi EBI. Alpha and beta proteins or Flavodoxinlike Class glutamine amidotransferaselike DJ or PfpI Intracellular protease EBI gi November Intracellular protease Files uploaded by Nichalp's script
Page 2023 Free-images.com. All images are Public Domain