4E51

Crystal structure of a histidyl-tRNA synthetase HisRS from Burkholderia thailandensis bound to histidine

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	467	51937.6	2	UniProt (Q2SWE3) Pfam (PF13393) Pfam (PF03129)	Burkholderia thailandensis	Histidyl-tRNA synthetase, HisRS
2	C, D (A, B)	HISTIDINE	non-polymer		156.2	2	Chemie (HIS)
3	E, F (A, B)	water	water		18.0	64	Chemie (HOH)

Sequence modifications

A, B: 1 - 446 (UniProt: Q2SWE3)

PDB	External Database	Details
Met -20	-	expression tag
Ala -19	-	expression tag
His -18	-	expression tag
His -17	-	expression tag
His -16	-	expression tag
His -15	-	expression tag
His -14	-	expression tag
His -13	-	expression tag
Met -12	-	expression tag
Gly -11	-	expression tag
Thr -10	-	expression tag
Leu -9	-	expression tag
Glu -8	-	expression tag
Ala -7	-	expression tag
Gln -6	-	expression tag
Thr -5	-	expression tag
Gln -4	-	expression tag
Gly -3	-	expression tag
Pro -2	-	expression tag
Gly -1	-	expression tag
Ser 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	103875.2
Non-Polymers*	Number of molecules	2
	Total formula weight	312.3
All*	Total formula weight	104187.6

*Water molecules are not included.