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.
Keywords from Image Description:
PDB mqp EBI. Alpha and beta proteins or TIM beta or alphabarrel Trans glycosidases alphaDglucuronidase or Hyaluronidase catalytic domain alphaDglucuronidase catalytic domain Alpha and beta proteins ab Zincinlike betaNacetylhexosaminidaselike domain alphaDglucuronidase Nterminal domain alphaDglucuronidase Nterminal domain EBI mqp