6T1P

ASR Alternansucrase in complex with isomaltononaose

• PDB DOI: https://doi.org/10.2210/pdb6T1P/pdb

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


• Deposited: 2019-10-04 Released: 2020-06-17 
• Deposition Author(s): Cioci, G., Molina, M., Moulis, C., Remaud-Simeon, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.50 Å
• R-Value Free: 0.266 
• R-Value Work: 0.207 
• R-Value Observed: 0.209 

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)

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 286.41 kDa 
• Atom Count: 19,351 
• Modelled Residue Count: 2,457 
• Deposited Residue Count: 2,556 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Alternansucrase	A, B	1,278	Leuconostoc mesenteroides	Mutation(s): 0  Gene Names: asr EC: 2.4.1.140
UniProt
Find proteins for Q9RE05 (Leuconostoc mesenteroides) Explore Q9RE05  Go to UniProtKB:  Q9RE05

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
alpha-D-glucopyranose-(1-6)-alpha-D-glucopyranose-(1-6)-alpha-D-glucopyranose	C	3		N/A
Glycosylation Resources
GlyTouCan:  G02998EX GlyCosmos:  G02998EX GlyGen:  G02998EX

Entity ID: 3
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
alpha-D-glucopyranose-(1-6)-alpha-D-glucopyranose-(1-6)-alpha-D-glucopyranose-(1-6)-alpha-D-glucopyranose	D	4		N/A
Glycosylation Resources
GlyTouCan:  G80662SX GlyCosmos:  G80662SX GlyGen:  G80662SX

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA (Subject of Investigation/LOI)	E [auth A], F [auth B]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.50 Å
• R-Value Free: 0.266 
• R-Value Work: 0.207 
• R-Value Observed: 0.209 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 100.567	α = 90
b = 135.212	β = 90
c = 237.201	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
SCALA	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2020-06-17 
Deposition Author(s): Cioci, G., Molina, M., Moulis, C., Remaud-Simeon, M.

Revision History  

• Version 1.0: 2020-06-17
  Type: Initial release
  
• Version 1.1: 2020-07-22
  Changes: Database references
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Advisory, Atomic model, Data collection, Derived calculations, Structure summary
• Version 2.1: 2024-01-24
  Changes: Data collection, Database references, Refinement description, Structure summary