3MEI

Regulatory motif from the thymidylate synthase mRNA

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)	RNA (5'-R(*CP*CP*GP*CP*CP*GP*CP*GP*CP*CP*AP*(5BU)P*GP*CP*CP*UP*GP*UP*GP*GP*CP*GP*G)-3')	polymer	23	7440.3	2
2	C, D, E, F, G (A, B)	MAGNESIUM ION	non-polymer		24.3	5	Chemie (MG)
3	H, I (A, B)	water	water		18.0	132	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	14880.6
Non-Polymers*	Number of molecules	5
	Total formula weight	121.5
All*	Total formula weight	15002.1

*Water molecules are not included.