2OK2

MutS C-terminal domain fused to Maltose Binding Protein

• PDB DOI: https://doi.org/10.2210/pdb2OK2/pdb

• Classification: SUGAR BINDING PROTEIN
• Organism(s): Escherichia coli K-12
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2007-01-15 Released: 2007-04-10 
• Deposition Author(s): Putnam, C.D., Mendillo, M.L., Kolodner, R.D.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.277 
• R-Value Work: 0.201 
• R-Value Observed: 0.205 

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 89.57 kDa 
• Atom Count: 6,889 
• Modelled Residue Count: 804 
• Deposited Residue Count: 804 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Maltose-binding periplasmic protein, DNA mismatch repair protein mutS fusion protein	A, B	402	Escherichia coli K-12	Mutation(s): 0  Gene Names: 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	C, D	2		N/A
Glycosylation Resources
GlyTouCan:  G07411ON GlyCosmos:  G07411ON

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	E [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Biologically Interesting Molecules (External Reference) 1 Unique

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

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.277 
• R-Value Work: 0.201 
• R-Value Observed: 0.205 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 174.289	α = 90
b = 88.361	β = 106.8
c = 61.353	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
Blu-Ice	data collection
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing
XFIT	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2007-04-10 
Deposition Author(s): Putnam, C.D., Mendillo, M.L., Kolodner, R.D.

Revision History  

• Version 1.0: 2007-04-10
  Type: Initial release
  
• Version 1.1: 2008-05-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Advisory, Version format compliance
• Version 1.3: 2017-08-23
  Changes: Refinement description, Source and taxonomy
• 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: 2023-08-30
  Changes: Data collection, Database references, Refinement description, Structure summary