5E3I

Crystal Structure of a Histidyl-tRNA synthetase from Acinetobacter baumannii with bound L-Histidine and ATP

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)	Histidine--tRNA ligase	polymer	438	49470.4	2	UniProt (A0A086HW61) Pfam (PF13393) Pfam (PF03129) UniProt (by SIFTS) (B0VKR7)	Acinetobacter baumannii	Histidyl-tRNA synthetase
2	C, F (A, B)	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
3	D, G (A, B)	ADENOSINE-5'-TRIPHOSPHATE	non-polymer		507.2	2	Chemie (ATP)
4	E, H (A, B)	HISTIDINE	non-polymer		156.2	2	Chemie (HIS)
5	I, J (A, B)	water	water		18.0	460	Chemie (HOH)

Sequence modifications

A, B: 2 - 431 (UniProt: A0A086HW61)

PDB	External Database	Details
Met -6	-	initiating methionine
Ala -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
His 0	-	expression tag
His 1	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	98940.8
Non-Polymers*	Number of molecules	6
	Total formula weight	1375.3
All*	Total formula weight	100316.1

*Water molecules are not included.