2E9B

Crystal structure of pullulanase type I from Bacillus subtilis str. 168 complexed with maltose

• PDB DOI: https://doi.org/10.2210/pdb2E9B/pdb

• Classification: HYDROLASE
• Organism(s): Bacillus subtilis
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2007-01-24 Released: 2008-02-19 
• Deposition Author(s): Mikami, B., Malle, D., Utsumi, S., Iwamoto, H., Katsuya, Y.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.242 
• R-Value Work: 0.194 
• R-Value Observed: 0.194 

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly 2  

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

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 164.21 kDa 
• Atom Count: 11,961 
• Modelled Residue Count: 1,424 
• Deposited Residue Count: 1,436 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
AmyX protein	A, B	718	Bacillus subtilis	Mutation(s): 0  Gene Names: amyX EC: 3.2.1.41
UniProt
Find proteins for C0SPA0 (Bacillus subtilis (strain 168)) Explore C0SPA0  Go to UniProtKB:  C0SPA0

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	3		N/A
Glycosylation Resources
GlyTouCan:  G96370VA GlyCosmos:  G96370VA GlyGen:  G96370VA

Entity ID: 3
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose	D	2		N/A
Glycosylation Resources
GlyTouCan:  G07411ON GlyCosmos:  G07411ON

Entity ID: 4
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
beta-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose	E	3		N/A
Glycosylation Resources
GlyTouCan:  G34751SB GlyCosmos:  G34751SB GlyGen:  G34751SB

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	I [auth A], L [auth B]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
ACT	G [auth A], H [auth A], K [auth B]	ACETATE ION C2 H3 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-M
CA	F [auth A], J [auth B]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Biologically Interesting Molecules (External Reference) 2 Unique

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

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

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.242 
• R-Value Work: 0.194 
• R-Value Observed: 0.194 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 71.031	α = 90
b = 129.178	β = 90
c = 192.06	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
HKL-2000	data collection
HKL-2000	data reduction
HKL-2000	data scaling
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2008-02-19 
Deposition Author(s): Mikami, B., Malle, D., Utsumi, S., Iwamoto, H., Katsuya, Y.

Revision History  

• Version 1.0: 2008-02-19
  Type: Initial release
  
• Version 1.1: 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, Database references, Derived calculations, Structure summary
• Version 2.1: 2023-10-25
  Changes: Data collection, Database references, Refinement description, Structure summary