5XGQ

Crystal structure of apo form (free-state) Mycobacterium tuberculosis methionyl-tRNA synthetase

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	B, A	Methionine-tRNA ligase	polymer	535	60248.7	2	UniProt (A5U150) Pfam (PF09334) Pfam (PF19303) In PDB	Mycobacterium tuberculosis (strain ATCC 25177 / H37Ra)	Methionyl-tRNA synthetase,MetRS
2		water	water		18.0	1163	Chemie (HOH)

Sequence modifications

B, A: 1 - 519 (UniProt: A5U150)

PDB	External Database	Details
Met -7	-	initiating methionine
Gly -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
Arg 520	-	expression tag
Ser 521	-	expression tag
His 522	-	expression tag
His 523	-	expression tag
His 524	-	expression tag
His 525	-	expression tag
His 526	-	expression tag
His 527	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	120497.4
All*	Total formula weight	120497.4

*Water molecules are not included.