4O2D

Crystal structure of aspartyl-tRNA synthetase from Mycobacterium smegmatis with bound aspartic acid

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)	Aspartate--tRNA ligase	polymer	620	67634.0	2	UniProt (A0QWN3) Pfam (PF01336) Pfam (PF00152) Pfam (PF02938)	Mycobacterium smegmatis	Aspartyl-tRNA synthetase, AspRS
2	C, F (A, B)	ASPARTIC ACID	non-polymer		133.1	2	Chemie (ASP)
3	D, E, G, H (A, B)	2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL	non-polymer		122.1	4	Chemie (TRS)
4	I, J (A, B)	water	water		18.0	234	Chemie (HOH)

Sequence modifications

A, B: 1 - 711 (UniProt: A0QWN3)

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
Val 2	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	135268.0
Non-Polymers*	Number of molecules	6
	Total formula weight	754.8
All*	Total formula weight	136022.7

*Water molecules are not included.