3ADB

Crystal structure of O-phosphoseryl-tRNA kinase complexed with selenocysteine tRNA and AMPPNP (crystal type 1)

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	259	31196.6	2	UniProt (Q58933) Pfam (PF08433)	Methanocaldococcus jannaschii (Methanococcus jannaschii)	O-phosphoseryl-tRNA(Sec) kinase, PSTK
2	C, D (C, D)	selenocysteine tRNA	polymer	92	29714.7	2		Methanopyrus kandleri
3	E (A)	PHOSPHATE ION	non-polymer		95.0	1	Chemie (PO4)
4	F (B)	PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER	non-polymer		506.2	1	Chemie (ANP)
5	G (B)	MAGNESIUM ION	non-polymer		24.3	1	Chemie (MG)
6	H, I, J, K (A, B, C, D)	water	water		18.0	159	Chemie (HOH)

Sequence modifications

A, B: 1 - 248 (UniProt: Q58933)

PDB	External Database	Details
Mse -10	-	expression tag
Asn -9	-	expression tag
His -8	-	expression tag
Lys -7	-	expression tag
Val -6	-	expression tag
His -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
His 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	121822.6
Non-Polymers*	Number of molecules	3
	Total formula weight	625.5
All*	Total formula weight	122448.1

*Water molecules are not included.