title: PDSS2
text: # PDSS2
  
  Decaprenyl-diphosphate synthase subunit 2 (PDSS2) is a protein that in humans is encoded by the PDSS2 gene.
  
  ## Function
  
  The protein encoded by this gene is an enzyme that synthesizes the prenyl side-chain of coenzyme Q, or ubiquinone, one of the key elements in the respiratory chain. The gene product catalyzes the formation of all trans-polyprenyl pyrophosphates from isopentyl diphosphate in the assembly of polyisoprenoid side chains, the first step in coenzyme Q biosynthesis.
  
  ## Clinical significance
  
  It may be associated with Coenzyme Q10 deficiency.
  
  