Plastid-lipid associated protein PAP / fibrillin family protein
TAIR Computational Description
Plastid-lipid associated protein PAP / fibrillin family protein;(source:Araport11)
TAIR Curator Summary
Encodes fibrillin 5 (FBN5). Located in chloroplast stroma. Essential for plastoquinone-9 biosynthesis. Stimulates enzymatic activity of solanesyl diphosphate synthases (SPS) 1 and 2 through binding to solanesyl moiety. Two splicing variants, named FBN5-A shorter one and FBN5-B longer one. FBN5-B is the protein detected in chloroplast stroma. Involved in plastoquinone biosynthesis.
TAIR Short Description
Plastid-lipid associated protein PAP / fibrillin family protein
Essential for plastoquinone-9 (PQ-9) biosynthesis (PubMed:26432861, PubMed:29741733). Interacts with the diphosphate synthases SPS1 and SPS2, and binds to the hydrophobic solanesyl moiety, which is generated by SPS1 and SPS2, in FBN5-SPS homodimeric complexes to stimulate the enzyme activity of SPS1 and SPS2 (PubMed:26432861).