1.3.1.24 phosphoprotein - 1.3.1.24 phosphoprotein in Escherichia coli expressed human biliverdin reductase is autophoshorylated and the phosphorylation is required for its activity, the enzyme is a renaturable phosphoprotein and the autophosphorylation is most prominent at pH 8.7, the enzyme is autophosphorylated on serine/threonine residues 1.3.1.24 phosphoprotein a significant reduction in the phosphorylation of serine, threonine and tyrosine residues of biliverdin reductase-A is found which is paralleled by a marked reduction in its reductase activity 1.3.1.24 phosphoprotein atorvastatin significantly increases tyrosine phosphorylation