3A74

Lysyl-tRNA synthetase from Bacillus stearothermophilus complexed with Diadenosine Tetraphosphate (AP4A)

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D (A, B, C, D)	Lysyl-tRNA synthetase	polymer	493	57359.3	4	UniProt (Q9RHV9) Pfam (PF01336) Pfam (PF00152)	Geobacillus stearothermophilus	Lysine--tRNA ligase, LysRS
2	E, J, O, T (A, B, C, D)	BIS(ADENOSINE)-5'-TETRAPHOSPHATE	non-polymer		836.4	4	Chemie (B4P)
3	F, K, P, U (A, B, C, D)	2,6-DIAMINO-HEXANOIC ACID AMIDE	non-polymer		146.2	4	Chemie (LYN)
4	G, H, I, L, M... (A, B, C, D)	MAGNESIUM ION	non-polymer		24.3	12	Chemie (MG)
5	AA, BA, Y, Z (C, D, A, B)	water	water		18.0	812	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	229437.2
Non-Polymers*	Number of molecules	20
	Total formula weight	4222.1
All*	Total formula weight	233659.3

*Water molecules are not included.