3PPR

Structures of the substrate-binding protein provide insights into the multiple compatible solutes binding specificities of Bacillus subtilis ABC transporter OpuC

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)	Glycine betaine/carnitine/choline-binding protein	polymer	311	35016.8	2	UniProt (O32243) Pfam (PF04069)	Bacillus subtilis	OpuCC, Osmoprotectant-binding protein
2	C, D (A, B)	(4S)-2-METHYL-1,4,5,6-TETRAHYDROPYRIMIDINE-4-CARBOXYLIC ACID	non-polymer		142.2	2	Chemie (4CS)
3	E, F (A, B)	water	water		18.0	140	Chemie (HOH)

Sequence modifications

A, B: 1 - 303 (UniProt: O32243)

PDB	External Database	Details
Met -7	-	expression tag
Gly -6	-	expression tag
His -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
His 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	70033.5
Non-Polymers*	Number of molecules	2
	Total formula weight	284.3
All*	Total formula weight	70317.9

*Water molecules are not included.