EOG8G7FHF	GO:0019825	3/14	oxygen binding	molecular_function	"Interacting selectively and non-covalently with oxygen (O2)." [GOC:jl]
EOG8G7FHF	GO:0005506	3/14	iron ion binding	molecular_function	"Interacting selectively and non-covalently with iron (Fe) ions." [GOC:ai]
EOG8G7FHF	GO:0020037	3/14	heme binding	molecular_function	"Interacting selectively and non-covalently with heme, any compound of iron complexed in a porphyrin (tetrapyrrole) ring." [CHEBI:30413, GOC:ai]
EOG8G7FHF	GO:0015671	2/14	oxygen transport	biological_process	"The directed movement of oxygen (O2) into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore." [GOC:ai]
EOG8G7FHF	GO:0005576	1/14	extracellular region	cellular_component	"The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite." [GOC:go_curators]
EOG8G7FHF	GO:0005344	1/14	oxygen transporter activity	molecular_function	"Enables the directed movement of oxygen into, out of or within a cell, or between cells." [GOC:ai]
EOG8G7FHF	GO:0004222	1/14	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]
EOG8G7FHF	GO:0005833	1/14	hemoglobin complex	cellular_component	"An iron-containing, oxygen carrying complex. In vertebrates it is made up of two pairs of associated globin polypeptide chains, each chain carrying a noncovalently bound heme prosthetic group." [GOC:jl, ISBN:0198506732]
EOG8G7FHF	GO:0008237	1/14	metallopeptidase activity	molecular_function	"Catalysis of the hydrolysis of peptide bonds 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]