4KH5

Toxoplasma gondii NTPDase1 C258S/C268S in complex with Mg and AMPNP

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Nucleoside-triphosphatase 2	polymer	612	68173.2	2	UniProt (Q27895) Pfam (PF01150) In PDB	Toxoplasma gondii	NTPase-II, Nucleoside triphosphate hydrolase 2, Nucleoside-triphosphatase II
2	A, B	5'-O-[(R)-hydroxy(phosphonoamino)phosphoryl]adenosine	non-polymer		426.2	2	Chemie (AU1)
3	A, B	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)

Sequence modifications

A, B: 26 - 628 (UniProt: Q27895)

PDB	External Database	Details
Met 25	-	INITIATING METHIONINE
Ser 258	Cys 258	ENGINEERED MUTATION
Ser 268	Cys 268	ENGINEERED MUTATION
Glu 629	-	EXPRESSION TAG
Glu 630	-	EXPRESSION TAG
His 631	-	EXPRESSION TAG
His 632	-	EXPRESSION TAG
His 633	-	EXPRESSION TAG
His 634	-	EXPRESSION TAG
His 635	-	EXPRESSION TAG
His 636	-	EXPRESSION TAG

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	136346.4
Non-Polymers*	Number of molecules	4
	Total formula weight	901.0
All*	Total formula weight	137247.4

*Water molecules are not included.