4P43

Crystal structure of the bacterial A1408U-mutant ribosomal decoding site (C2 form 2)

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'-R(*UP*UP*GP*CP*GP*UP*CP*UP*CP*GP*UP*CP*GP*AP*CP*GP*AP*AP*GP*UP*CP*GP*C)-3'	polymer	23	7332.4	2
2	C, E (A, B)	CALCIUM ION	non-polymer		40.1	2	Chemie (CA)
3	D, F (A, B)	SODIUM ION	non-polymer		23.0	2	Chemie (NA)
4	G, H (A, B)	water	water		18.0	125	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	14664.7
Non-Polymers*	Number of molecules	4
	Total formula weight	126.1
All*	Total formula weight	14790.9

*Water molecules are not included.