1	F4S	Fe4-s3 cluster	1.000
2	35L	Iron/sulfur cluster	0.875
3	ER2	Fe4s4	0.875
4	SF4	Iron/sulfur cluster	0.875
5	Q46	Fe4 H s5	0.778
6	F3S	Fe3-s4 cluster	0.750
7	SF3	Fe4-s3 cluster	0.750
8	VV2	Fe-S cluster	0.750
9	FS0	Fe2/s3 cluster	0.714