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.
st. Crystal structure of Subtilisin From PDB file ST Created with PyMol own assumed DrKjaergaard Check categories October en Subtilisin es Subtilisina Enzymes
Page 2023 Free-images.com. All images are Public Domain