1QC0

CRYSTAL STRUCTURE OF A 19 BASE PAIR COPY CONTROL RELATED RNA DUPLEX

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	5'-R(*UP*AP*GP*CP*GP*GP*UP*GP*C)-3'	polymer	9	2887.8	1
2	B (B)	5'-R(GP*CP*AP*CP*CP*GP*CP*UP*AP*C)-3'	polymer	10	3135.9	1
3	C (C)	5'-R(*GP*CP*AP*CP*CP*GP*UP*UP*GP*GP*UP*AP*GP*CP*GP*GP*UP*GP*C)-3'	polymer	19	6125.7	1
4	D (D)	5'-R(*GP*CP*AP*CP*CP*GP*CP*UP*AP*CP*CP*AP*AP*CP*GP*GP*UP*GP*C)-3'	polymer	19	6051.7	1
5	E, F, G, H, I... (A, B, C, D)	AMMONIUM ION	non-polymer		18.0	7	Chemie (NH4)
6	L, M, N, O (A, B, C, D)	water	water		18.0	251	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	18201.1
Non-Polymers*	Number of molecules	7
	Total formula weight	126.3
All*	Total formula weight	18327.3

*Water molecules are not included.