PDBID	Molecule/ Organism	Pfam	Residues	HETATM	Symmetry	Pubmed	View
2c1l	RESTRICTION ENDONUCLEASE Bacillus firmus	PLDc_2	LEU A 139 LEU A 141 LEU B 139 LEU B 141	None	homomer cyclic	16247004
4eoz	SPECKLE-TYPE POZ PROTEIN Homo sapiens	BTB	LEU A 186 LEU A 190 LEU C 186 LEU C 190	None	heteromer cyclic	22632832
5vzv	E3 UBIQUITIN-PROTEIN LIGASE TRIM23 Homo sapiens	zf-RING_UBOX	LEU A  98 LEU A 102 LEU C  98 LEU C 102	None	homomer cyclic	28681414