Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Global Symmetry: Dihedral - D2  (3D View)
Global Stoichiometry: Homo 4-mer - A4 

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

Macromolecule Content

• Total Structure Weight: 210.05 kDa 
• Atom Count: 13764 
• Residue Count: 1791 
• Unique protein chains: 1

1JSW

NATIVE L-ASPARTATE AMMONIA LYASE

• DOI: 10.2210/pdb1JSW/pdb

• Classification: AMINO ACID AMMONIA-LYASE
• Organism(s): Escherichia coli B
• Mutation(s): No 


• Deposited: 1997-02-19 Released: 1997-06-16 
• Deposition Author(s): Shi, W., Dunbar, J., Farber, G.K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.371 
• R-Value Work: 0.216 
• R-Value Observed: 0.216 

Literature

The structure of L-aspartate ammonia-lyase from Escherichia coli.

Shi, W., Dunbar, J., Jayasekera, M.M., Viola, R.E., Farber, G.K.

(1997) Biochemistry 36: 9136-9144

• PubMed: 9230045 
• DOI: 10.1021/bi9704515
• Primary Citation of Related Structures:  
  1JSW


• PubMed Abstract: 
  

The X-ray crystal structure of l-aspartate ammonia-lyase has been determined to 2.8 A resolution. The enzyme contains three domains, and each domain is composed almost completely of alpha helices. The central domain is composed of five long helices. In the tetramer, these five helices form a 20-helix cluster. Such clusters have also been seen in delta-crystallin and in fumarase. The active site of aspartase has been located in a region that contains side chains from three different subunits. The structure of the apoenzyme has made it possible to identify some of the residues that are involved in binding the substrate. These residues have been examined by site-directed mutagenesis, and their putative roles have been assigned [Jayasekera, M. M. K., Shi, W., Farber, G. K., & Viola, R. E. (1997) Biochemistry 36, 9145-9150].

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Related Citations: 

• Crystallization and Preliminary X-Ray Studies of L-Aspartase from Escherichia Coli
  Shi, W., Kidd, R., Giorgianni, F., Schindler, J.F., Viola, R.E., Farber, G.K.
  (1993) J Mol Biol 234: 1248

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Organizational Affiliation: 

Department of Biochemistry and Molecular Biology, 108 Althouse Laboratory, The Pennsylvania State University, University Park 16802, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
L-ASPARTATE AMMONIA-LYASE	A, B, C, D	478	Escherichia coli B	Mutation(s): 0  EC: 4.3.1.1
Find proteins for P0AC38 (Escherichia coli (strain K12)) Explore P0AC38  Go to UniProtKB:  P0AC38

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BGC	A, B	beta-D-glucopyranose C6 H12 O6 WQZGKKKJIJFFOK-VFUOTHLCSA-N
ACT	A	ACETATE ION C2 H3 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.371 
• R-Value Work: 0.216 
• R-Value Observed: 0.216 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 153.5	α = 90
b = 146.2	β = 90
c = 103.2	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
DENZO	data reduction
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1997-02-19 
• Released Date: 1997-06-16 
Deposition Author(s): Shi, W., Dunbar, J., Farber, G.K.

Revision History 

• Version 1.0: 1997-06-16
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Source and taxonomy, Version format compliance
• Version 1.3: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Data collection, Derived calculations, Other, Structure summary