1F7Y

THE CRYSTAL STRUCTURE OF TWO UUCG LOOPS HIGHLIGHTS THE ROLE PLAYED BY 2'-HYDROXYL GROUPS IN ITS UNUSUAL STABILITY

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	B	16S RIBOSOMAL RNA FRAGMENT	polymer	57	18465.0	1
2	A	30S RIBOSOMAL PROTEIN S15	polymer	89	10844.1	1	UniProt (P80378) Pfam (PF00312) In PDB	Thermus thermophilus
3	B	MAGNESIUM ION	non-polymer		24.3	9	Chemie (MG)
4	B	SODIUM ION	non-polymer		23.0	2	Chemie (NA)
5	A	POTASSIUM ION	non-polymer		39.1	1	Chemie (K)
6		water	water		18.0	27	Chemie (HOH)

Sequence modifications

A: 0 - 88 (UniProt: P80378)

PDB	External Database	Details
Mse 11	Ile 12	engineered mutation
Mse 57	Met 58	engineered mutation
Mse 58	Met 59	engineered mutation
Mse 79	Ala 80	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	29309.1
Non-Polymers*	Number of molecules	12
	Total formula weight	303.8
All*	Total formula weight	29612.9

*Water molecules are not included.