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Cytochrome b561 is an integral membrane protein responsible for electron transport, binding two heme groups non-covalently. It is a family of ascorbate-dependent oxidoreductase enzymes.

Human proteins containing this domain

• CYB561;
• CYB561D1;
• CYB561D2;
• CYBASC3;
• CYBRD1;

References

1. Cytochrome b561, Uniprot
2. Lu P, Ma D, Yan C, Gong X, Du M, Shi Y (February 2014). "Structure and mechanism of a eukaryotic transmembrane ascorbate-dependent oxidoreductase". Proceedings of the National Academy of Sciences of the United States of America. 111 (5): 1813–8. Bibcode:2014PNAS..111.1813L. doi:10.1073/pnas.1323931111. PMC 3918761. PMID 24449903.

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