PDBID Molecule/
Organism		 Pfam Residues HETATM Symmetry Pubmed View
2frh STAPHYLOCOCCAL ACCESSORY REGULATOR A
Staphylococcus aureus		-MET A 115
ALA A 119
MET B 115
ALA B 119
None
homomer
cyclic		16455801
4mak CRISPR-ASSOCIATED ENDORIBONUCLEASE CAS2
Escherichia coli		Cas_Cas2CT1978MET A   3
ALA A  61
MET B   3
ALA B  61
None
homomer
cyclic		-
5a2d BETAINE ALDEHYDE DEHYDROGENASE, CHLOROPLASTIC
Spinacia oleracea		AldedhMET A 244
ALA A 248
MET B 244
ALA B 248
None
homomer
cyclic		26792760