7L3O

Crystal Structure of the RNA binding domain of Threonyl-tRNA synthetase from Cryptosporidium parvum Iowa II

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D (A, B, C, D)	Threonyl-tRNA synthetase	polymer	442	51404.3	4	UniProt (Q5CYN0) Pfam (PF00587) Pfam (PF03129)	Cryptosporidium parvum (strain Iowa II)
2	E, G, I, J (A, B, C, D)	ZINC ION	non-polymer		65.4	4	Chemie (ZN)
3	F, H (A, B)	CALCIUM ION	non-polymer		40.1	2	Chemie (CA)
4	K, L, M, N (A, B, C, D)	water	water		18.0	939	Chemie (HOH)

Sequence modifications

A, B, C, D: 330 - 763 (UniProt: Q5CYN0)

PDB	External Database	Details
Met 322	-	initiating methionine
Ala 323	-	expression tag
His 324	-	expression tag
His 325	-	expression tag
His 326	-	expression tag
His 327	-	expression tag
His 328	-	expression tag
His 329	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	205617.2
Non-Polymers*	Number of molecules	6
	Total formula weight	341.8
All*	Total formula weight	205959.0

*Water molecules are not included.