4MBP

MALTODEXTRIN BINDING PROTEIN WITH BOUND MALTETROSE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Work: 0.188 

wwPDB Validation 3D Report Full Report



Literature

Extensive features of tight oligosaccharide binding revealed in high-resolution structures of the maltodextrin transport/chemosensory receptor.

Quiocho, F.A.Spurlino, J.C.Rodseth, L.E.

(1997) Structure 5: 997-1015

  • DOI: 10.1016/s0969-2126(97)00253-0
  • Primary Citation of Related Structures:  
    3MBP, 4MBP, 1ANF

  • PubMed Abstract: 
  • Active-transport processes perform a vital function in the life of a cell, maintaining cell homeostasis and allowing access of nutrients. Maltodextrin/maltose-binding protein (MBP; M(r) = 40k) is a receptor protein which serves as an initial high-aff ...

    Active-transport processes perform a vital function in the life of a cell, maintaining cell homeostasis and allowing access of nutrients. Maltodextrin/maltose-binding protein (MBP; M(r) = 40k) is a receptor protein which serves as an initial high-affinity binding component of the active-transport system of maltooligosaccharides in bacteria. MBP also participates in chemotaxis towards maltooligosaccharides. The interaction between MBP and specific cytoplasmic membrane proteins initiates either active transport or chemotaxis. In order to gain new understanding of the function of MBP, especially its versatility in binding different linear and cyclic oligosaccharides with similar affinities, we have undertaken high-resolution X-ray analysis of three oligosaccharide-bound structures.


    Related Citations: 
    • Refined 1.8-A Structure Reveals the Mode of Binding of Beta-Cyclodextrin to the Maltodextrin Binding Protein
      Sharff, A.J., Rodseth, L.E., Quiocho, F.A.
      (1993) Biochemistry 32: 10553
    • Crystallographic Evidence of a Large Ligand-Induced Hinge-Twist Motion between the Two Domains of the Maltodextrin Binding Protein Involved in Active Transport and Chemotaxis
      Sharff, A.J., Rodseth, L.E., Spurlino, J.C., Quiocho, F.A.
      (1992) Biochemistry 31: 10657
    • The 2.3-A Resolution Structure of the Maltose-or Maltodextrin-Binding Protein, a Primary Receptor of Bacterial Active Transport and Chemotaxis
      Spurlino, J.C., Lu, G.Y., Quiocho, F.A.
      (1991) J Biol Chem 266: 5202

    Organizational Affiliation

    Howard Hughes Medical Institute, Baylor College of Medicine, Houston, TX 77030, USA. faq@dino.bcm.tmc.edu



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
MALTODEXTRIN BINDING PROTEINA370Escherichia coli K-12Mutation(s): 0 
Gene Names: malEb4034JW3994
Find proteins for P0AEX9 (Escherichia coli (strain K12))
Explore P0AEX9 
Go to UniProtKB:  P0AEX9
Protein Feature View
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 2
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose
B
4 N/A Oligosaccharides Interaction
Biologically Interesting Molecules (External Reference) 1 Unique
Entity ID: 2
IDChainsNameType/Class2D Diagram3D Interactions
PRD_900010
Query on PRD_900010
Balpha-maltotetraoseOligosaccharide /  Substrate analog

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Work: 0.188 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 106.68α = 90
b = 68.38β = 112
c = 58.44γ = 90
Software Package:
Software NamePurpose
CHAINmodel building
PROLSQrefinement
SDMSdata reduction
SDMSdata scaling
CHAINphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-02-25
    Type: Initial release
  • Version 1.1: 2008-03-25
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Source and taxonomy, Version format compliance
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Other, Structure summary