1F27

CRYSTAL STRUCTURE OF A BIOTIN-BINDING RNA PSEUDOKNOT

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	RNA (5'-R(*AP*CP*CP*GP*UP*CP*AP*GP*AP*GP*GP*AP*CP*AP*CP*GP*GP*UP*U)-3')	polymer	19	6116.7	1
2	B (B)	RNA (5'-R(*AP*AP*AP*AP*AP*GP*UP*CP*CP*UP*C)-3')	polymer	11	3474.2	1
3	C, D, E, F, G... (A, B)	MAGNESIUM ION	non-polymer		24.3	6	Chemie (MG)
4	H (A)	BIOTIN	non-polymer		244.3	1	Chemie (BTN)
5	J, K (A, B)	water	water		18.0	184	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	9590.9
Non-Polymers*	Number of molecules	7
	Total formula weight	390.1
All*	Total formula weight	9981.0

*Water molecules are not included.