6PNK

Crystal structure of the G-quadruplex formed by (GGGTT)3GGG in complex with N-methylmesoporphryin IX

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	DNA (5'-D(P*GP*GP*GP*TP*TP*GP*GP*GP*TP*TP*GP*GP*GP*TP*TP*GP*GP*G)-3')	polymer	18	5730.7	2		Tetrahymena thermophila
2	C, D, E, G, H... (A, B)	POTASSIUM ION	non-polymer		39.1	6	Chemie (K)
3	F, J (A, B)	N-METHYLMESOPORPHYRIN	non-polymer		580.7	2	Chemie (MMP)
4	K (B)	FORMIC ACID	non-polymer		46.0	1	Chemie (FMT)
5	L (B)	SODIUM ION	non-polymer		23.0	1	Chemie (NA)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	11461.3
Non-Polymers*	Number of molecules	10
	Total formula weight	1465.0
All*	Total formula weight	12926.4

*Water molecules are not included.