Function
FBN5 Antibody is crucial for the biosynthesis of plastoquinone-9 (PQ-9). This antibody interacts with the diphosphate synthases SPS1 and SPS2, specifically binding to the hydrophobic solanesyl moiety generated by these enzymes within FBN5-SPS homodimeric complexes. This interaction stimulates the enzymatic activity of SPS1 and SPS2, enhancing PQ-9 production.