7P01

Structure of the maltase BaAG2 from Blastobotrys adeninivorans in complex with acarbose

• PDB DOI: https://doi.org/10.2210/pdb7P01/pdb

• Classification: HYDROLASE
• Organism(s): Blastobotrys adeninivorans
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2021-06-29 Released: 2021-10-06 
• Deposition Author(s): Ernits, K., Visnapuu, T., Persson, K.
• Funding Organization(s): Swedish Research Council, Other private, Estonian Research Council

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.12 Å
• R-Value Free: 0.195 
• R-Value Work: 0.184 
• R-Value Observed: 0.185 

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Biological Assembly 2  

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

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 137.98 kDa 
• Atom Count: 10,177 
• Modelled Residue Count: 1,143 
• Deposited Residue Count: 1,170 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
BaAG2	A, B	585	Blastobotrys adeninivorans	Mutation(s): 0  EC: 3.2.1.20

Oligosaccharides

Help

Entity ID: 2
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	C [auth D], D [auth E], E [auth F]	3	N/A	N/A
Glycosylation Resources
GlyTouCan:  G66431MI GlyCosmos:  G66431MI

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MB3	F [auth A], G [auth A], I [auth B]	1-methylpyrrolidin-2-one C5 H9 N O SECXISVLQFMRJM-UHFFFAOYSA-N
CA	H [auth A], J [auth B]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Biologically Interesting Molecules (External Reference) 1 Unique

Entity ID: 2
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_900007	C [auth D], D [auth E], E [auth F]	alpha-acarbose	Oligosaccharide / Inhibitor

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.12 Å
• R-Value Free: 0.195 
• R-Value Work: 0.184 
• R-Value Observed: 0.185 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 68.03	α = 90
b = 78.08	β = 94.096
c = 121.93	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
PHENIX	refinement
XDS	data reduction
XSCALE	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2021-10-06 
Deposition Author(s): Ernits, K., Visnapuu, T., Persson, K.

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Funding Organization	Location	Grant Number
Swedish Research Council	Sweden	2016-05009
Other private	Sweden	JCK-1918
Estonian Research Council	Estonia	PUT1050

Revision History  

• Version 1.0: 2021-10-06
  Type: Initial release
  
• Version 1.1: 2021-11-03
  Changes: Data collection, Database references
• Version 1.2: 2024-01-31
  Changes: Data collection, Database references, Refinement description