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biopax3:comment
The decarboxylation of phosphopantothenoylcysteine is carried out by phosphopantothenoylcysteine decarboxylase (PPCDC). PPCDC is cytosolic and exists as a homotrimer, binding one FMN cofactor per subunit. While a second isoform has been inferred from large-scale sequnceing studies, it lacks the protein's FMN-binding domain and would thus appear to be nonfunctional if it is expressed.
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