1FQD

CRYSTAL STRUCTURE OF MALTOTETRAITOL BOUND TO CLOSED-FORM MALTODEXTRIN BINDING PROTEIN

• PDB DOI: https://doi.org/10.2210/pdb1FQD/pdb

• Classification: SUGAR BINDING PROTEIN
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2000-09-04 Released: 2001-03-14 
• Deposition Author(s): Duan, X., Hall, J.A., Nikaido, H., Quiocho, F.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.244 
• R-Value Work: 0.191 

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 41.36 kDa 
• Atom Count: 3,012 
• Modelled Residue Count: 370 
• Deposited Residue Count: 370 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
MALTODEXTRIN-BINDING PROTEIN	A	370	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0AEX9 (Escherichia coli (strain K12)) Explore P0AEX9  Go to UniProtKB:  P0AEX9

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-D-glucose	B	4		N/A
Glycosylation Resources
GlyTouCan:  G85441OF GlyCosmos:  G85441OF GlyGen:  G85441OF

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.244 
• R-Value Work: 0.191 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 104.3	α = 90
b = 69.4	β = 112.4
c = 56.3	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2001-03-14 
Deposition Author(s): Duan, X., Hall, J.A., Nikaido, H., Quiocho, F.A.

Revision History  

• Version 1.0: 2001-03-14
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Atomic model, Data collection, Derived calculations, Structure summary
• Version 2.1: 2024-02-07
  Changes: Data collection, Database references, Structure summary