PDE7B is a member of the PDE7 gene family. The graph depicts the results of an alignment comparing the catalytic domain of PDE7B to the catalytic domains of representatives of the 10 PDE families. The identity between the catalytic domains of PDE7B and PDE7A is 70%, indicating that they are members of the same PDE7 family. Accession numbers for sequences aligned in this figure are: PDE1, L01695; PDE2, U21101; PDE3, Z22867; PDE4, U09457; PDE5, L16545; PDE6, X55968; PDE7, U68171; PDE8, AF067806; PDE9, AF031147; PDE10, AF110507.