Title : Role of a Tyrosine Radical in Human Ceruloplasmin Catalysis.

Pub. Date : 2020 Oct 28

PMID : 33145420






3 Functional Relationships(s)
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Protein Name
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1 The native substrate of Cp is Fe2+. ammonium ferrous sulfate ceruloplasmin Homo sapiens
2 In human serum, Cp operates under substrate-limiting low [Fe2+] but high [O2] conditions, implying the possible involvement of partially reduced intermediates in Cp catalysis. ammonium ferrous sulfate ceruloplasmin Homo sapiens
3 Our results lead to a new hypothesis that human iron transport is regulated as the paired transfer of iron from ferroportin to Cp to transferrin, and the tyrosine residue in Cp acts as a gate to avoid reactive oxygen species (ROS) formation when Fe2+ delivery is dysregulated. ammonium ferrous sulfate ceruloplasmin Homo sapiens