3SEW

Zn-mediated Polymer of Maltose-binding Protein A216H/K220H by Synthetic Symmetrization (Form I)

• PDB DOI: https://doi.org/10.2210/pdb3SEW/pdb

• Classification: SUGAR BINDING PROTEIN
• Organism(s): Escherichia coli K-12
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2011-06-11 Released: 2011-09-21 
• Deposition Author(s): Zhao, M., Soriaga, A.B., Laganowsky, A., Sawaya, M.R., Cascio, D., Yeates, T.O.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.55 Å
• R-Value Free: 0.188 
• R-Value Work: 0.161 
• R-Value Observed: 0.162 

Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 41.71 kDa 
• Atom Count: 3,237 
• Modelled Residue Count: 370 
• Deposited Residue Count: 372 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Maltose-binding periplasmic protein	A	372	Escherichia coli K-12	Mutation(s): 2  Gene Names: b4034, JW3994, malE
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	B	2		N/A
Glycosylation Resources
GlyTouCan:  G07411ON GlyCosmos:  G07411ON

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	G [auth A], H [auth A], I [auth A], K [auth A], L [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
ZN	C [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
CL	D [auth A], E [auth A], F [auth A], J [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Biologically Interesting Molecules (External Reference) 1 Unique

Entity ID: 2
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_900001	B	alpha-maltose	Oligosaccharide / Nutrient

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.55 Å
• R-Value Free: 0.188 
• R-Value Work: 0.161 
• R-Value Observed: 0.162 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 85.58	α = 90
b = 63.44	β = 90.75
c = 66.39	γ = 90

Software Package:

Software Name	Purpose
XSCALE	data scaling
PHASER	phasing
PHENIX	refinement
PDB_EXTRACT	data extraction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-09-21 
Deposition Author(s): Zhao, M., Soriaga, A.B., Laganowsky, A., Sawaya, M.R., Cascio, D., Yeates, T.O.

Revision History  

• Version 1.0: 2011-09-21
  Type: Initial release
  
• Version 1.1: 2011-11-02
  Changes: Database references
• 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: 2024-02-28
  Changes: Data collection, Database references, Structure summary