1NQS

Structural Characterisation of the Holliday Junction formed by the sequence d(TCGGTACCGA) at 1.97 A

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(TpCpGpGpTpApCpCpGpA)-3'	polymer	10	3045.0	2
2	C (B)	CALCIUM ION	non-polymer		40.1	1	Chemie (CA)
3	D, E (A, B)	water	water		18.0	42	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	6090.0
Non-Polymers*	Number of molecules	1
	Total formula weight	40.1
All*	Total formula weight	6130.1

*Water molecules are not included.