3PUY

Crystal Structure of an outward-facing MBP-Maltose transporter complex bound to AMP-PNP after crystal soaking of the pretranslocation state


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.216 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 2.1 of the entry. See complete history


Literature

Crystal structure of the maltose transporter in a pretranslocation intermediate state.

Oldham, M.L.Chen, J.

(2011) Science 332: 1202-1205

  • DOI: https://doi.org/10.1126/science.1200767
  • Primary Citation of Related Structures:  
    3PUY, 3PUZ, 3PV0

  • PubMed Abstract: 
  • Adenosine triphosphate (ATP)-binding cassette (ABC) transporters convert chemical energy from ATP hydrolysis to mechanical work for substrate translocation. They function by alternating between two states, exposing the substrate-binding site to either side of the membrane ...

    Adenosine triphosphate (ATP)-binding cassette (ABC) transporters convert chemical energy from ATP hydrolysis to mechanical work for substrate translocation. They function by alternating between two states, exposing the substrate-binding site to either side of the membrane. A key question that remains to be addressed is how substrates initiate the transport cycle. Using x-ray crystallography, we have captured the maltose transporter in an intermediate step between the inward- and outward-facing states. We show that interactions with substrate-loaded maltose-binding protein in the periplasm induce a partial closure of the MalK dimer in the cytoplasm. ATP binding to this conformation then promotes progression to the outward-facing state. These results, interpreted in light of biochemical and functional studies, provide a structural basis to understand allosteric communication in ABC transporters.


    Organizational Affiliation

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



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Maltose transporter subunit; periplasmic-binding component of ABC superfamilyA [auth E]378Escherichia coli K-12Mutation(s): 0 
Gene Names: ECDH10B_4223malEb4034JW3994
Membrane Entity: Yes 
UniProt
Find proteins for P0AEX9 (Escherichia coli (strain K12))
Explore P0AEX9 
Go to UniProtKB:  P0AEX9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0AEX9
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Maltose transporter subunit; membrane component of ABC superfamilyB [auth F]514Escherichia coli K-12Mutation(s): 0 
Gene Names: ECDH10B_4222malFb4033JW3993
Membrane Entity: Yes 
UniProt
Find proteins for P02916 (Escherichia coli (strain K12))
Explore P02916 
Go to UniProtKB:  P02916
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02916
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Maltose transporter subunit; membrane component of ABC superfamilyC [auth G]296Escherichia coli K-12Mutation(s): 0 
Gene Names: ECDH10B_4221malGb4032JW3992
Membrane Entity: Yes 
UniProt
Find proteins for P68183 (Escherichia coli (strain K12))
Explore P68183 
Go to UniProtKB:  P68183
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP68183
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Fused maltose transport subunit, ATP-binding component of ABC superfamily; regulatory proteinD [auth A],
E [auth B]
381Escherichia coli K-12Mutation(s): 0 
Gene Names: ECDH10B_4224malKb4035JW3995
EC: 7.5.2.1
Membrane Entity: Yes 
UniProt
Find proteins for P68187 (Escherichia coli (strain K12))
Explore P68187 
Go to UniProtKB:  P68187
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP68187
Protein Feature View
Expand
  • Reference Sequence
Oligosaccharides

Help

Entity ID: 5
MoleculeChainsChain Length2D DiagramGlycosylation3D Interactions
alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranoseF [auth C]2N/A Oligosaccharides Interaction
Glycosylation Resources
GlyTouCan:  G07411ON
GlyCosmos:  G07411ON
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PGV
Query on PGV

Download Ideal Coordinates CCD File 
G [auth F](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 Ideal Coordinates CCD File 
I [auth A],
K [auth B]
PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
C10 H17 N6 O12 P3
PVKSNHVPLWYQGJ-KQYNXXCUSA-N
 Ligand Interaction
MG
Query on MG

Download Ideal Coordinates CCD File 
H [auth A],
J [auth B]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Biologically Interesting Molecules (External Reference) 1 Unique
Entity ID: 5
IDChainsNameType/Class2D Diagram3D Interactions
PRD_900001
Query on PRD_900001
F [auth C]alpha-maltoseOligosaccharide / Nutrient Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.216 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 76.55α = 86.91
b = 96.283β = 80.87
c = 112.283γ = 74.32
Software Package:
Software NamePurpose
HKL-2000data collection
PHASERphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-05-18
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Database references, Derived calculations, Non-polymer description, Structure summary
  • Version 2.1: 2023-09-06
    Changes: Data collection, Database references, Refinement description, Structure summary