6EQ8

Structure of the periplasmic binding protein (PBP) MelB (Atu4661) in complex with galactinol from agrobacterium fabrum C58

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	D, B, C, A	Periplasmic alpha-galactoside-binding protein	polymer	683	76359.6	4	UniProt (A0A083ZM57) In PDB	Rhizobium radiobacter (Agrobacterium tumefaciens)	MelB
2	B, C, D, A	1,2-ETHANEDIOL	non-polymer		62.1	39	Chemie (EDO)
3	B, C, D, A	galactinol	non-polymer		342.3	4	Chemie (BQZ)
4	B, C, D, A	CALCIUM ION	non-polymer		40.1	13	Chemie (CA)
5	B, C, D, A	DI(HYDROXYETHYL)ETHER	non-polymer		106.1	9	Chemie (PEG)
6	A, C, D	1-ETHOXY-2-(2-ETHOXYETHOXY)ETHANE	non-polymer		162.2	3	Chemie (P4G)
7	A, C, D	TETRAETHYLENE GLYCOL	non-polymer		194.2	3	Chemie (PG4)
8	C, A, B, D	CHLORIDE ION	non-polymer		35.5	35	Chemie (CL)
9		water	water		18.0	862	Chemie (HOH)

Sequence modifications

D, B, C, A: 1 - 677 (UniProt: A0A083ZM57)

PDB	External Database	Details
His 678	-	expression tag
His 679	-	expression tag
His 680	-	expression tag
His 681	-	expression tag
His 682	-	expression tag
His 683	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	305438.4
Non-Polymers*	Number of molecules	106
	Total formula weight	7576.1
All*	Total formula weight	313014.6

*Water molecules are not included.