2H9S

Crystal Structure of Homo-DNA and Nature's Choice of Pentose over Hexose in the Genetic System

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(*(XCT)P*(XGU)P*(XAD)P*(XAD)P*(XTH)P*(XTH)P*(XCT)P*(XGU))-3'	polymer	8	2538.8	2
2	C (A)	MAGNESIUM ION	non-polymer		24.3	1	Chemie (MG)
3	D, E (A, B)	water	water		18.0	72	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	5077.7
Non-Polymers*	Number of molecules	1
	Total formula weight	24.3
All*	Total formula weight	5102.0

*Water molecules are not included.