2AW3

X-Ray studies on maltodextrin phosphorylase complexes: recognition of substrates and cathalitic mechanism of phosphorylase family

• PDB DOI: https://doi.org/10.2210/pdb2AW3/pdb

• Classification: TRANSFERASE
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2005-08-31 Released: 2005-09-13 
• Deposition Author(s): Geremia, S., Campagnolo, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.236 
• R-Value Work: 0.175 
• R-Value Observed: 0.178 

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

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

Macromolecule Content

• Total Structure Weight: 183.44 kDa 
• Atom Count: 14,092 
• Modelled Residue Count: 1,592 
• Deposited Residue Count: 1,592 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Maltodextrin phosphorylase	A, B	796	Escherichia coli	Mutation(s): 0  Gene Names: EG10560 EC: 2.4.1.1
UniProt
Find proteins for P00490 (Escherichia coli (strain K12)) Explore P00490  Go to UniProtKB:  P00490

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)-alpha-D-glucopyranose-(1-4)-beta-D-glucopyranose	C, D	5		N/A
Glycosylation Resources
GlyTouCan:  G43441FW GlyCosmos:  G43441FW

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PLP	F [auth A], H [auth B]	PYRIDOXAL-5'-PHOSPHATE C8 H10 N O6 P NGVDGCNFYWLIFO-UHFFFAOYSA-N
SO4	E [auth A], G [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.236 
• R-Value Work: 0.175 
• R-Value Observed: 0.178 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 75.297	α = 90
b = 105.887	β = 90
c = 219.52	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
CCP4	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2005-09-13 
Deposition Author(s): Geremia, S., Campagnolo, M.

Revision History  

• Version 1.0: 2005-09-13
  Type: Initial release
  
• Version 1.1: 2008-05-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Non-polymer description, 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: 2023-10-25
  Changes: Data collection, Database references, Refinement description, Structure summary