PDBID	Molecule/ Organism	Pfam	Residues	HETATM	Symmetry	Pubmed	View
2r2v	GCN4 LEUCINE ZIPPER Saccharomyces cerevisiae	-	GLU C  23 LYS D   9 GLU D  12 LYS D  16	ZN C  35 CIT C  37	homomer dihedral	18052214
3ifu	NON-STRUCTURAL PROTEIN Porcine reproductive and respiratory syndrome virus	Peptidase_C31	GLU A  20 LYS A 150 GLU B  20 LYS B 150	None	homomer cyclic	19706710
4izb	ENOYL-COA HYDRATASE/ISOMERASE FAMILY PROTEIN Ruegeria pomeroyi	ECH_1	GLU A  95 LYS A  99 GLU B  95 LYS B  99	None	homomer dihedral	23704947