1LI5

Crystal Structure of Cysteinyl-tRNA Synthetase

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)	CYSTEINYL-TRNA SYNTHETASE	polymer	461	52271.1	2	UniProt (P21888) Pfam (PF01406) Pfam (PF09190)	Escherichia coli	Cysteine--tRNA ligase; CysRS; transfer RNA-Cys synthetase
2	C, D (A, B)	ZINC ION	non-polymer		65.4	2	Chemie (ZN)
3	E, F (A, B)	water	water		18.0	102	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	104542.1
Non-Polymers*	Number of molecules	2
	Total formula weight	130.8
All*	Total formula weight	104672.9

*Water molecules are not included.