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 zfd EBI. All alpha proteins EF Handlike EFhand Calmodulinlike Calcineurin Blike protein EBI zfd June Calcineurin Blike protein Files uploaded by Nichalp's script
Page 2023 Free-images.com. All images are Public Domain