4KI0

Crystal structure of the maltose-binding protein/maltose transporter complex in an outward-facing conformation bound to maltohexaose

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	ABC transporter related protein	polymer	381	42184.5	2	UniProt (C9QV42) Pfam (PF00005) Pfam (PF08402) UniProt (by SIFTS) (P68187) In PDB	Escherichia coli	Maltose ABC-type transport systems, ATP-binding component
2	E	Maltose-binding periplasmic protein	polymer	380	41898.3	1	UniProt (P0AEX9) Pfam (PF01547) In PDB	Escherichia coli	MBP, MMBP, Maltodextrin-binding protein
3	F	Maltose transport system permease protein MalF	polymer	514	57052.9	1	UniProt (P02916) Pfam (PF20872) Pfam (PF14785) Pfam (PF00528) In PDB	Escherichia coli
4	G	Binding-protein-dependent transport systems inner membrane component	polymer	296	32246.2	1	UniProt (C9QV46) Pfam (PF00528) UniProt (by SIFTS) (P68183) In PDB	Escherichia coli	Part of maltose permease, inner membrane component
5	C	alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose	branched		666.6	1	In PDB BIRD (PRD_900010) GlyTouCan (G87171PZ)		alpha-maltotetraose
6	A, B	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
7	A, B	PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER	non-polymer		506.2	2	Chemie (ANP)
8	E, F, G	UNDECYL-MALTOSIDE	non-polymer		496.6	11	Chemie (UMQ)
9	F	(1R)-2-{[{[(2S)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL (11E)-OCTADEC-11-ENOATE	non-polymer		749.0	2	Chemie (PGV)
10		water	water		18.0	508	Chemie (HOH)

Sequence modifications

A, B: 1 - 371 (UniProt: C9QV42)

PDB	External Database	Details
Ala 372	-	expression tag
Ser 373	-	expression tag
Ala 374	-	expression tag
Ser 375	-	expression tag
His 376	-	expression tag
His 377	-	expression tag
His 378	-	expression tag
His 379	-	expression tag
His 380	-	expression tag
His 381	-	expression tag

E: 1 - 370 (UniProt: P0AEX9)

PDB	External Database	Details
Ala 371	-	expression tag
Ser 372	-	expression tag
Ala 373	-	expression tag
Ser 374	-	expression tag
His 375	-	expression tag
His 376	-	expression tag
His 377	-	expression tag
His 378	-	expression tag
His 379	-	expression tag
His 380	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	5
	Total formula weight	215566.5
Branched	Number of molecules	1
	Total formula weight	666.6
Non-Polymers*	Number of molecules	17
	Total formula weight	8021.5
All*	Total formula weight	224254.6

*Water molecules are not included.