1AGM

Refined structure for the complex of acarbose with glucoamylase from Aspergillus awamori var. x100 to 2.4 angstroms resolution

• PDB DOI: https://doi.org/10.2210/pdb1AGM/pdb

• Classification: HYDROLASE
• Organism(s): Aspergillus awamori
• Mutation(s): No 


• Deposited: 1994-05-13 Released: 1994-09-30 
• Deposition Author(s): Aleshin, A.E., Firsov, L.M., Honzatko, R.B.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Observed: 0.124 

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: 55.85 kDa 
• Atom Count: 4,461 
• Modelled Residue Count: 470 
• Deposited Residue Count: 470 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
GLUCOAMYLASE-471	A	470	Aspergillus awamori	Mutation(s): 0  EC: 3.2.1.3
UniProt
Find proteins for P69327 (Aspergillus awamori) Explore P69327  Go to UniProtKB:  P69327

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	B	5		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42227JK GlyCosmos:  G42227JK GlyGen:  G42227JK

Entity ID: 3
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-3)-alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	C	8		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G83582BK GlyCosmos:  G83582BK GlyGen:  G83582BK

Entity ID: 4
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
4,6-dideoxy-4-{[(1S,4R,5S,6S)-4,5,6-trihydroxy-3-(hydroxymethyl)cyclohex-2-en-1-yl]amino}-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose	D, E	3	N/A	N/A
Glycosylation Resources
GlyTouCan:  G66431MI GlyCosmos:  G66431MI

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MAN	F [auth A], G [auth A], H [auth A], I [auth A], J [auth A], K [auth A], L [auth A], M [auth A], N [auth A], O [auth A]	alpha-D-mannopyranose C6 H12 O6 WQZGKKKJIJFFOK-PQMKYFCFSA-N

Biologically Interesting Molecules (External Reference) 1 Unique

Entity ID: 4
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_900007	D, E	alpha-acarbose	Oligosaccharide / Inhibitor

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Observed: 0.124 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 116.7	α = 90
b = 103.9	β = 90
c = 48.34	γ = 90

Software Package:

Software Name	Purpose
PROLSQ	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 1994-09-30 
Deposition Author(s): Aleshin, A.E., Firsov, L.M., Honzatko, R.B.

Revision History  

• Version 1.0: 1994-09-30
  Type: Initial release
  
• Version 1.1: 2008-03-03
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Non-polymer description, Version format compliance
• Version 1.3: 2017-11-29
  Changes: Derived calculations, Other
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Non-polymer description, Structure summary