question: List sclerostin interaction partners.
answer: alkaline phosphatase
  carbonic anhydrase
  gremlin-1
  fetuin A
  midkine
  annexin A1 
  annexin A2
  collagen α1
  casein kinase II 
  secreted frizzled related protein 4
  Phex
  asporin
  follistatin
  erbB-3
  LRP5 
  noggin