Keywords: Carbonic anhydrase 1CA2.png Ribbon diagram of human carbonic anhydrase II Zinc ion visible at center <br>Created using PyMOL http //www pymol org and GIMP From PDB entry http //www rcsb org/pdb/cgi/explore cgi pdbId 1CA2 1CA2 2011-05-28 Own File Carbonic anhydrase 1CA2 active site png ”active site Lyases Metalloproteins |