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metalloprotein
metalloprotein n. 
/ˌmɛtl̩ə(ʊ)ˈprəʊtiːn/, /mᵻˌtalə(ʊ)ˈprəʊtiːn/, /məˌtæloʊˈproʊˌtin/ Biochemistry a protein that contains a metal atom as an essential part of its structure.
Brit. /ˌmɛtələ(ʊ)ˈprəʊtiːn/
, /ˌmɛtələ(ʊ)ˈprəʊtiːn//ˌmɛtl̩ə(ʊ)ˈprəʊtiːn//mᵻˌtalə(ʊ)ˈprəʊtiːn/U.S. /ˌmɛdl̩oʊˈproʊˌtin/
, /ˌmɛdl̩oʊˈproʊˌtin//məˌtæloʊˈproʊˌtin/ΚΠ
1936 Amer. Naturalist 70 487 (heading) Pyrrolic compounds and metallo-proteins.
1940 Biochem. Jrnl. 34 1163 The metallo-protein compounds present in the red blood corpuscles.
1964 Ann. Rev. Biochem. 33 331 The term metalloprotein is used to designate those types of metal-protein complexes in which the strength of the binding is so great that a metal atom can be considered an integral part of the structure of the protein.
1991 D. T. Sawyer Oxygen Chem. vi. 150 Nature uses a variety of metalloproteins and flavoproteins to activate (or catalyze) dioxygen for useful chemistry.
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