RT Journal Article SR Electronic T1 Role of the Mouse ank Gene in Control of Tissue Calcification and Arthritis JF Science JO Science FD American Association for the Advancement of Science SP 265 OP 270 DO 10.1126/science.289.5477.265 VO 289 IS 5477 A1 Ho, Andrew M. A1 Johnson, Michelle D. A1 Kingsley, David M. YR 2000 UL http://science.sciencemag.org/content/289/5477/265.abstract AB Mutation at the mouse progressive ankylosis(ank) locus causes a generalized, progressive form of arthritis accompanied by mineral deposition, formation of bony outgrowths, and joint destruction. Here, we show that theank locus encodes a multipass transmembrane protein (ANK) that is expressed in joints and other tissues and controls pyrophosphate levels in cultured cells. A highly conserved gene is present in humans and other vertebrates. These results identify ANK-mediated control of pyrophosphate levels as a possible mechanism regulating tissue calcification and susceptibility to arthritis in higher animals.