Pi(3)P ja PI(4)P muodot . PTEN on avainentsyymi.

https://www.google.se/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0ahUKEwjou7CZ8IvYAhXkCJoKHUWdDkYQjRwIBw&url=https%3A%2F%2Fwww.sciencedirect.com%2Fscience%2Farticle%2Fpii%2FS0014579315003543&psig=AOvVaw2RIHnUxBnYEw41Gf9gcrIL&ust=1513422424367781