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Publication Abstract from PubMed

Copper is essential for proper functioning of cytochrome c oxidases, and therefore for cellular respiration in eukaryotes and many bacteria. Here we show that a new periplasmic protein (PCu(A)C) selectively inserts Cu(I) ions into subunit II of Thermus thermophilus ba(3) oxidase to generate a native Cu(A) site. The purported metallochaperone Sco1 is unable to deliver copper ions; instead, it works as a thiol-disulfide reductase to maintain the correct oxidation state of the Cu(A) cysteine ligands.

Mechanism of Cu(A) assembly.,Abriata LA, Banci L, Bertini I, Ciofi-Baffoni S, Gkazonis P, Spyroulias GA, Vila AJ, Wang S Nat Chem Biol. 2008 Oct;4(10):599-601. Epub 2008 Aug 31. PMID:18758441^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.