6EQ0

Structure of the periplasmic binding protein (PBP) MelB (atu4661) in complex with galactose from agrobacterium tumefacien C58

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Periplasmic alpha-galactoside-binding protein	polymer	683	76359.6	2	UniProt (A0A083ZM57) In PDB	Rhizobium radiobacter (Agrobacterium tumefaciens)	MelB
2	A, B	alpha-D-galactopyranose	non-polymer		180.2	2	Chemie (GLA)
3	A	DI(HYDROXYETHYL)ETHER	non-polymer		106.1	2	Chemie (PEG)
4	A, B	1,2-ETHANEDIOL	non-polymer		62.1	21	Chemie (EDO)
5	B, A	CHLORIDE ION	non-polymer		35.5	16	Chemie (CL)
6	A, B	CALCIUM ION	non-polymer		40.1	17	Chemie (CA)
7		water	water		18.0	253	Chemie (HOH)

Sequence modifications

A, B: 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	2
	Total formula weight	152719.2
Non-Polymers*	Number of molecules	58
	Total formula weight	3124.6
All*	Total formula weight	155843.8

*Water molecules are not included.