1NAL

THE THREE-DIMENSIONAL STRUCTURE OF N-ACETYLNEURAMINATE LYASE FROM ESCHERICHIA COLI

• PDB DOI: https://doi.org/10.2210/pdb1NAL/pdb

• Classification: LYASE
• Organism(s): Escherichia coli
• Mutation(s): No 


• Deposited: 1994-02-28 Released: 1995-09-15 
• Deposition Author(s): Izard, T., Lawrence, M.C., Malby, R.L., Lilley, G.G., Colman, P.M.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Work: 0.208 
• R-Value Observed: 0.208 

Literature

The three-dimensional structure of N-acetylneuraminate lyase from Escherichia coli.

Izard, T., Lawrence, M.C., Malby, R.L., Lilley, G.G., Colman, P.M.

(1994) Structure 2: 361-369

• PubMed: 8081752 
• DOI: https://doi.org/10.1016/s0969-2126(00)00038-1
• Primary Citation of Related Structures:  
  1NAL


• PubMed Abstract: 
  

  N-acetylneuraminate lyase catalyzes the cleavage of N-acetylneuraminic acid (sialic acid) to form pyruvate and N-acetyl-D-mannosamine. The enzyme plays an important role in the regulation of sialic acid metabolism in bacteria. The reverse reaction can be exploited for the synthesis of sialic acid and some of its derivatives.

---

Organizational Affiliation: 

Biomolecular Research Institute, Parkville, Australia.

Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 131.07 kDa 
• Atom Count: 9,072 
• Modelled Residue Count: 1,164 
• Deposited Residue Count: 1,188 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
N-ACETYLNEURAMINATE LYASE	A [auth 1], B [auth 2], C [auth 3], D [auth 4]	297	Escherichia coli	Mutation(s): 0  EC: 4.1.3.3
UniProt
Find proteins for P0A6L4 (Escherichia coli (strain K12)) Explore P0A6L4  Go to UniProtKB:  P0A6L4

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	E [auth 1], F [auth 2], G [auth 3], H [auth 4]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Work: 0.208 
• R-Value Observed: 0.208 
• Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 122.8	α = 90
b = 122.8	β = 90
c = 198.8	γ = 120

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1995-09-15 
Deposition Author(s): Izard, T., Lawrence, M.C., Malby, R.L., Lilley, G.G., Colman, P.M.

Revision History  

• Version 1.0: 1995-09-15
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-11-29
  Changes: Advisory, Derived calculations, Other
• Version 1.4: 2024-02-14
  Changes: Advisory, Data collection, Database references, Derived calculations