焦磷酸酶是作用于双磷酸键上的酸酐水解酶。是一种催化一分子焦磷酸盐转化为两分子磷酸盐离子的酶。
焦磷酸酶分子反应
无机焦磷酸酶(英语:Inorganic Pyrophosphatase,简称为焦磷酸酶)是一种催化一分子焦磷酸盐转化为两分子磷酸盐离子的酶。这是一个高放能的反应,因此此反应可偶联到一些热力学上不利的转化,以便驱动这些转化进行到完全。

焦磷酸酶功能
此酶的功能乃是在脂代谢(包括脂合成与分解)、钙吸收以及骨形成和DNA合成中扮演重要角色,其他生物化学转化也是如此。
焦磷酸酶参考文献
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^ Poole KE, Reeve J. Parathyroid hormone - a bone anabolic and catabolic agent. Curr Opin Pharmacol. 2005.December, 5^ Nelson, David L.; Cox, Michael M. Lehninger Principles of Biochemistry, 3rd ed.. New York: Worth Publishers. 2000: 937.^ Ko KM, Lee W, Yu JR, Ahnn J. PYP-1, inorganic pyrophosphatase, is required for larval development and intestinal function in C. elegans. FEBS Lett. 2007.November, 581 (28): 5445–53. doi:10.1016/j.febslet.2007.10.047.^ Usui Y, Uematsu T, Uchihashi T, et al.. Inorganic polyphosphate induces osteoblastic differentiation. J. Dent. Res. 2010.May, 89