1U7X

crystal structure of a mutant M. jannashii tyrosyl-tRNA synthetase specific for O-methyl-tyrosine

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Tyrosyl-tRNA synthetase	polymer	312	35808.6	2	UniProt (Q57834) Pfam (PF00579) In PDB	Methanocaldococcus jannaschii	Tyrosine--tRNA ligase, TyrRS
2	A	POTASSIUM ION	non-polymer		39.1	1	Chemie (K)

Sequence modifications

A, B: 1 - 306 (UniProt: Q57834)

PDB	External Database	Details
Gln 32	Tyr 32	engineered mutation
Thr 107	Glu 107	engineered mutation
Ala 158	Asp 158	engineered mutation
Pro 162	Leu 162	engineered mutation
His 307	-	expression tag
His 308	-	expression tag
His 309	-	expression tag
His 310	-	expression tag
His 311	-	expression tag
His 312	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	71617.2
Non-Polymers*	Number of molecules	1
	Total formula weight	39.1
All*	Total formula weight	71656.3

*Water molecules are not included.