1FHY

PSORALEN CROSS-LINKED D(CCGCTAGCGG) FORMS HOLLIDAY JUNCTION

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	DNA (5'-D(*CP*CP*GP*CP*TP*AP*GP*CP*GP*G)-3')	polymer	10	3046.0	2
2	A	4'-HYDROXYMETHYL-4,5',8-TRIMETHYLPSORALEN	non-polymer		258.3	1	Chemie (PSO)
3	B	CALCIUM ION	non-polymer		40.1	1	Chemie (CA)
4		water	water		18.0	26	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	6092.0
Non-Polymers*	Number of molecules	2
	Total formula weight	298.3
All*	Total formula weight	6390.3

*Water molecules are not included.