As of April 2018, there were 13 known three-dimensional crystal structures of PETases: 6EQD, 6EQE, 6EQF, 6EQG, 6EQH, 6ANE, 5XJH, 5YNS, 5XFY, 5XFZ, 5XG0, 5XH2 and 5XH3.
Huhtikuussa 2018 tunnettiin 13 PETaasien kiderakennetta: 6EQD, 6EQE, 6EQF, 6EQG, 6EQH, 6ANE, 5XJH, 5YNS, 5XFY, 5XFZ, 5XG0, 5XH2 ja 5XH3.