1URD

X-ray structures of the maltose-maltodextrin binding protein of the thermoacidophilic bacterium Alicyclobacillus acidocaldarius provide insight into acid stability of proteins

• PDB DOI: https://doi.org/10.2210/pdb1URD/pdb

• Classification: MALTOSE-BINDING PROTEIN
• Organism(s): Alicyclobacillus acidocaldarius
• Mutation(s): No 


• Deposited: 2003-10-29 Released: 2003-12-11 
• Deposition Author(s): Schafer, K., Magnusson, U., Scheffel, F., Schiefner, A., Sandgren, M.O.J., Diederichs, K., Welte, W., Hulsmann, A., Schneider, E., Mowbray, S.L.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.53 Å
• R-Value Free: 0.231 
• R-Value Work: 0.206 
• R-Value Observed: 0.206 

Biological Assembly 1  

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

Biological assembly 1 assigned by authors and generated by PQS (software)

Biological Assembly 2  

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

Biological assembly 2 assigned by authors and generated by PQS (software)

Macromolecule Content

• Total Structure Weight: 81.78 kDa 
• Atom Count: 6,304 
• Modelled Residue Count: 739 
• Deposited Residue Count: 740 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
MALTOSE-BINDING PROTEIN	A, B	370	Alicyclobacillus acidocaldarius	Mutation(s): 0
UniProt
Find proteins for Q9RHZ6 (Alicyclobacillus acidocaldarius subsp. acidocaldarius) Explore Q9RHZ6  Go to UniProtKB:  Q9RHZ6

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	C, D	3		N/A
Glycosylation Resources
GlyTouCan:  G96370VA GlyCosmos:  G96370VA GlyGen:  G96370VA

Biologically Interesting Molecules (External Reference) 1 Unique

Entity ID: 2
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_900009	C, D	alpha-maltotriose	Oligosaccharide / Nutrient

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.53 Å
• R-Value Free: 0.231 
• R-Value Work: 0.206 
• R-Value Observed: 0.206 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 49.23	α = 90
b = 70.783	β = 96.58
c = 104.671	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-12-11 
Deposition Author(s): Schafer, K., Magnusson, U., Scheffel, F., Schiefner, A., Sandgren, M.O.J., Diederichs, K., Welte, W., Hulsmann, A., Schneider, E., Mowbray, S.L.

Revision History  

• Version 1.0: 2003-12-11
  Type: Initial release
  
• Version 1.1: 2011-05-08
  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, Non-polymer description, Other, Structure summary