PDBID	Molecule/ Organism	Pfam	Residues	HETATM	Symmetry	Pubmed	View
1y0y	FRV OPERON PROTEIN FRVX Pyrococcus horikoshii	Peptidase_M42	ARG A 220 ARG M 220 ARG S 220	None	homomer tetrahedral	15713475
3vat	ASPARTYL AMINOPEPTIDASE Bos taurus	Peptidase_M18	ARG A 342 ARG B 342 ARG C 342	None	homomer tetrahedral	22356908