3A4L

Crystal structure of archaeal O-phosphoseryl-tRNA(Sec) kinase

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) kinase	polymer	260	31009.1	2	UniProt (Q58933) Pfam (PF08433)	Methanocaldococcus jannaschii (Methanococcus jannaschii)	O-phosphoseryl-tRNA(Sec) kinase, PSTK
2	C, H (A, B)	PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER	non-polymer		506.2	2	Chemie (ANP)
3	D, I (A, B)	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
4	E, J (A, B)	IODIDE ION	non-polymer		126.9	2	Chemie (IOD)
5	F, G, K, L (A, B)	1,2-ETHANEDIOL	non-polymer		62.1	4	Chemie (EDO)
6	M, N (A, B)	water	water		18.0	301	Chemie (HOH)

Sequence modifications

A, B: 5 - 252 (UniProt: Q58933)

PDB	External Database	Details
Met 1	-	expression tag
Gly 2	-	expression tag
Asp 3	-	expression tag
Ile 4	-	expression tag
Leu 253	-	expression tag
Glu 254	-	expression tag
His 255	-	expression tag
His 256	-	expression tag
His 257	-	expression tag
His 258	-	expression tag
His 259	-	expression tag
His 260	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	62018.3
Non-Polymers*	Number of molecules	10
	Total formula weight	1563.1
All*	Total formula weight	63581.4

*Water molecules are not included.