1K8P

Structure of the Human G-quadruplex reveals a novel topology

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)	5'-D(*(BRU)P*AP*GP*GP*GP*(BRU)P*TP*AP*GP*GP*GP*T)-3'	polymer	12	3903.2	2
2	C, D (A)	POTASSIUM ION	non-polymer		39.1	2	Chemie (K)
3	E (A)	SODIUM ION	non-polymer		23.0	1	Chemie (NA)
4	F, G (A, B)	water	water		18.0	50	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	7806.4
Non-Polymers*	Number of molecules	3
	Total formula weight	101.2
All*	Total formula weight	7907.6

*Water molecules are not included.