Theankgene story

A landmark investigation into the genetic basis of murine progressive ankylosis has clarified the physiologic role of extracellular inorganic pyrophosphate (ePPi) in suppressing pathologic deposition of basic calcium phosphate (BCP) (an inclusive term for hydroxyapatite, octacalcium phosphate, and tricalcium phosphate) in articular tissue [1]. A cell membrane protein, ANK, affects ePPi concentrations and the balance of mineralization in articular tissues.