2RF1

Crystal structure of ChoX in an unliganded closed conformation

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)	PUTATIVE GLYCINE BETAINE-BINDING ABC TRANSPORTER PROTEIN	polymer	298	32302.0	2	UniProt (Q92N37) Pfam (PF04069)	Rhizobium meliloti (Sinorhizobium meliloti)
2	C, D (A, B)	water	water		18.0	197	Chemie (HOH)

Sequence modifications

A, B: 28 - 318 (UniProt: Q92N37)

PDB	External Database	Details
Asp 251	Gly 251	engineered mutation
Glu 319	-	expression tag
His 320	-	expression tag
His 321	-	expression tag
His 322	-	expression tag
His 323	-	expression tag
His 324	-	expression tag
His 325	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	64604.0
All*	Total formula weight	64604.0

*Water molecules are not included.