3MBP

MALTODEXTRIN-BINDING PROTEIN WITH BOUND MALTOTRIOSE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Work: 0.164 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

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

  • Primary Citation of Related Structures:  

  • 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: 
    • Atomic Interactions in Protein-Carbohydrate Complexes. Tryptophan Residues in the Periplasmic Maltodextrin Receptor for Active Transport and Chemotaxis
      Spurlino, J.C.,Rodseth, L.E.,Quiocho, F.A.
      (1992) J.Mol.Biol. 226: 15
    • 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
    • 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
    • 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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MALTODEXTRIN-BINDING PROTEIN
A
370Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: malE
Find proteins for P0AEX9 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AEX9
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GLC
Query on GLC

Download SDF File 
Download CCD File 
A
ALPHA-D-GLUCOSE
C6 H12 O6
WQZGKKKJIJFFOK-DVKNGEFBSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Work: 0.164 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 106.070α = 90.00
b = 68.430β = 112.51
c = 57.940γ = 90.00
Software Package:
Software NamePurpose
SDMSdata scaling
CHAINmodel building
PROLSQrefinement
PROTEINmodel building
SDMSdata reduction
PROTEINphasing
CHAINphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-12-24
    Type: Initial release
  • Version 1.1: 2008-03-25
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Source and taxonomy, Version format compliance