3I1A

Crystal Structure of apo Spectinomycin Phosphotransferase, APH(9)-Ia

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Spectinomycin phosphotransferase	polymer	339	39644.8	2	UniProt (O06916) Pfam (PF01636) In PDB	Legionella pneumophila
2	A, B	2-(N-MORPHOLINO)-ETHANESULFONIC ACID	non-polymer		195.2	3	Chemie (MES)
3	A, B	DIMETHYL SULFOXIDE	non-polymer		78.1	2	Chemie (DMS)
4	B	TETRAETHYLENE GLYCOL	non-polymer		194.2	1	Chemie (PG4)
5		water	water		18.0	860	Chemie (HOH)

Sequence modifications

A, B: 1 - 331 (UniProt: O06916)

PDB	External Database	Details
Leu 332	-	expression tag
Glu 333	-	expression tag
His 334	-	expression tag
His 335	-	expression tag
His 336	-	expression tag
His 337	-	expression tag
His 338	-	expression tag
His 339	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	79289.6
Non-Polymers*	Number of molecules	6
	Total formula weight	936.2
All*	Total formula weight	80225.8

*Water molecules are not included.