3RLF

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.223 
  • R-Value Observed: 0.225 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Snapshots of the maltose transporter during ATP hydrolysis.

Oldham, M.L.Chen, J.

(2011) Proc Natl Acad Sci U S A 108: 15152-15156

  • DOI: 10.1073/pnas.1108858108
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • ATP-binding cassette transporters are powered by ATP, but the mechanism by which these transporters hydrolyze ATP is unclear. In this study, four crystal structures of the full-length wild-type maltose transporter, stabilized by adenosine 5'-(β,γ-imi ...

    ATP-binding cassette transporters are powered by ATP, but the mechanism by which these transporters hydrolyze ATP is unclear. In this study, four crystal structures of the full-length wild-type maltose transporter, stabilized by adenosine 5'-(β,γ-imido)triphosphate or ADP in conjunction with phosphate analogs BeF(3)(-), VO(4)(3-), or AIF(4)(-), were determined to 2.2- to 2.4-Å resolution. These structures led to the assignment of two enzymatic states during ATP hydrolysis and demonstrate specific functional roles of highly conserved residues in the nucleotide-binding domain, suggesting that ATP-binding cassette transporters catalyze ATP hydrolysis via a general base mechanism.


    Organizational Affiliation

    Department of Biological Sciences, Purdue University, Howard Hughes Medical Institute, 240 Martin Jischke Boulevard, West Lafayette, IN 47907, USA.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Maltose-binding periplasmic protein
E
380Escherichia coliMutation(s): 0 
Gene Names: malEb4034JW3994
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
ATP Binding Cassette (ABC) Transporters
Protein: 
MalFGK2-MBP Maltose uptake transporter complex with bound MgAMPPNP
Find proteins for P0AEX9 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AEX9

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Maltose transport system permease protein malF
F
514Escherichia coliMutation(s): 0 
Gene Names: malFb4033JW3993
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
ATP Binding Cassette (ABC) Transporters
Protein: 
MalFGK2-MBP Maltose uptake transporter complex with bound MgAMPPNP
Find proteins for P02916 (Escherichia coli (strain K12))
Go to UniProtKB:  P02916

Find similar proteins by: Sequence  |  Structure

Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Maltose transport system permease protein malG
G
296Escherichia coliMutation(s): 0 
Gene Names: malGb4032JW3992
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
ATP Binding Cassette (ABC) Transporters
Protein: 
MalFGK2-MBP Maltose uptake transporter complex with bound MgAMPPNP
Find proteins for P68183 (Escherichia coli (strain K12))
Go to UniProtKB:  P68183

Find similar proteins by: Sequence  |  Structure

Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Maltose/maltodextrin import ATP-binding protein MalK
A, B
381Escherichia coliMutation(s): 0 
Gene Names: malKb4035JW3995
EC: 3.6.3.19 (PDB Primary Data), 7.5.2.1 (UniProt)
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
ATP Binding Cassette (ABC) Transporters
Protein: 
MalFGK2-MBP Maltose uptake transporter complex with bound MgAMPPNP
Find proteins for P68187 (Escherichia coli (strain K12))
Go to UniProtKB:  P68187
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PGV
Query on PGV

Download CCD File 
F, G
(1R)-2-{[{[(2S)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL (11E)-OCTADEC-11-ENOATE
C40 H77 O10 P
ADYWCMPUNIVOEA-GPJPVTGXSA-N
 Ligand Interaction
ANP
Query on ANP

Download CCD File 
A, B
PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
C10 H17 N6 O12 P3
PVKSNHVPLWYQGJ-KQYNXXCUSA-N
 Ligand Interaction
UMQ
Query on UMQ

Download CCD File 
E
UNDECYL-MALTOSIDE
C23 H44 O11
UYEMNFYVTFDKRG-ZNGNCRBCSA-N
 Ligand Interaction
MAL
Query on MAL

Download CCD File 
F
MALTOSE
C12 H22 O11
GUBGYTABKSRVRQ-ASMJPISFSA-N
 Ligand Interaction
MG
Query on MG

Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.223 
  • R-Value Observed: 0.225 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 72.098α = 86.7
b = 95.812β = 82.68
c = 109.983γ = 76.4
Software Package:
Software NamePurpose
Blu-Icedata collection
PHASERphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2011-04-19 
  • Released Date: 2011-08-10 
  • Deposition Author(s): Oldham, M.L., Chen, J.

Revision History 

  • Version 1.0: 2011-08-10
    Type: Initial release
  • Version 1.1: 2011-08-24
    Changes: Database references
  • Version 1.2: 2011-09-28
    Changes: Database references