1FDY image
Entry Detail
PDB ID:
1FDY
Keywords:
Title:
N-ACETYLNEURAMINATE LYASE IN COMPLEX WITH HYDROXYPYRUVATE
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
1996-07-08
Release Date:
1997-10-22
Method Details:
Experimental Method:
Resolution:
2.45 Å
R-Value Work:
0.21
R-Value Observed:
0.21
Space Group:
P 32 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:N-ACETYLNEURAMINATE LYASE
Chain IDs:A, B, C, D
Chain Length:297
Number of Molecules:4
Biological Source:Escherichia coli
Ligand Molecules
Primary Citation
Structure and mechanism of a sub-family of enzymes related to N-acetylneuraminate lyase.
J.Mol.Biol. 266 381 399 (1997)
PMID: 9047371 DOI: 10.1006/jmbi.1996.0769

Abstact

We describe here a sub-family of enzymes related both structurally and functionally to N-acetylneuraminate lyase. Two members of this family (N-acetylneuraminate lyase and dihydrodipicolinate synthase) have known three-dimensional structures and we now proceed to show their structural and functional relationship to two further proteins, trans-o-hydroxybenzylidenepyruvate hydratase-aldolase and D-4-deoxy-5-oxoglucarate dehydratase. These enzymes are all thought to involve intermediate Schiff-base formation with their respective substrates. In order to understand the nature of this intermediate, we have determined the three-dimensional structure of N-acetylneuraminate lyase in complex with hydroxypyruvate (a product analogue) and in complex with one of its products (pyruvate). From these structures we deduce the presence of a closely similar Schiff-base forming motif in all members of the N-acetylneuraminate lyase sub-family. A fifth protein, MosA, is also confirmed to be a member of the sub-family although the involvement of an intermediate Schiff-base in its proposed reaction is unclear.

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Primary Citation of related structures