4KR9

Crystal structure of a 4-thiouridine synthetase - RNA complex at 3.5 Angstrom resolution

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Probable tRNA sulfurtransferase	polymer	388	44193.1	2	UniProt (Q9X220) Pfam (PF02926) Pfam (PF02568) In PDB	Thermotoga maritima	Sulfur carrier protein ThiS sulfurtransferase, Thiamine biosynthesis protein ThiI, tRNA 4-thiouridine synthase
2	M, X	RNA (39-MER)	polymer	39	12559.5	2

Sequence modifications

A, B: 1 - 388 (UniProt: Q9X220)

PDB	External Database	Details
Glu 2	Lys 2	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	113505.3
All*	Total formula weight	113505.3

*Water molecules are not included.