EOG8DNHJZ GO:0031012 8/43 extracellular matrix cellular_component "A structure lying external to one or more cells, which provides structural support for cells or tissues; may be completely external to the cell (as in animals and bacteria) or be part of the cell (as in plants)." [GOC:mah, NIF_Subcellular:nlx_subcell_20090513] EOG8DNHJZ GO:0008270 8/43 zinc ion binding molecular_function "Interacting selectively and non-covalently with zinc (Zn) ions." [GOC:ai] EOG8DNHJZ GO:0004222 8/43 metalloendopeptidase activity molecular_function "Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a mechanism in which water acts as a nucleophile, one or two metal ions hold the water molecule in place, and charged amino acid side chains are ligands for the metal ions." [GOC:mah, http://merops.sanger.ac.uk/about/glossary.htm#CATTYPE, http://merops.sanger.ac.uk/about/glossary.htm#ENDOPEPTIDASE] EOG8DNHJZ GO:0005509 3/43 calcium ion binding molecular_function "Interacting selectively and non-covalently with calcium ions (Ca2+)." [GOC:ai]