3WCO

Crystal structure of the depentamerized mutant of N-terminal truncated selenocysteine synthase SelA

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)	L-seryl-tRNA(Sec) selenium transferase	polymer	392	44473.4	2	UniProt (O67140) Pfam (PF03841)	Aquifex aeolicus	Selenocysteine synthase, Sec synthase, Selenocysteinyl-tRNA(Sec) synthase
2	C, D, E, F, G (A, B)	THIOSULFATE	non-polymer		112.1	5	Chemie (THJ)
3	H, I (A, B)	water	water		18.0	105	Chemie (HOH)

Sequence modifications

A, B: 61 - 452 (UniProt: O67140)

PDB	External Database	Details
Tyr 191	Thr 191	engineered mutation
Tyr 192	Thr 192	engineered mutation
Arg 199	Asp 199	engineered mutation
Pro 220	Tyr 220	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	88946.9
Non-Polymers*	Number of molecules	5
	Total formula weight	560.6
All*	Total formula weight	89507.5

*Water molecules are not included.