Classification result for Bacteriorhodopsin-like (PF01036) representative unknown structures. 372 of 438 representative proteins have been correctly assigned to PF01036. The greater the evolutionary degree of freedom (x-axis), the more variability occurs within PF01036-EIPPs. This leads to more classified proteins. On the other side, EIPPs become more unspecific for a membrane protein family which leads to wrong classified. In this case, PF01036-EIPPs were covered in 85 PF00230-proteins.