3TOK

Assaying the energies of biological halogen bonds.

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	DNA (5'-D(*CP*CP*GP*AP*TP*AP*CP*CP*GP*G)-3')	polymer	10	3030.0	1
2	B	DNA (5'-D(*CP*CP*GP*GP*TP*AP*TP*CP*GP*G)-3')	polymer	10	3061.0	1
3	B	SODIUM ION	non-polymer		23.0	1	Chemie (NA)
4		water	water		18.0	128	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	6091.0
Non-Polymers*	Number of molecules	1
	Total formula weight	23.0
All*	Total formula weight	6114.0

*Water molecules are not included.