ISDA: 1MWE

Deposition Date 1997-08-27

Release Date 1998-03-04

Last Version Date 2024-11-13

Entry Detail

PDB ID:

1MWE

Keywords:

HYDROLASE

Title:

THE X-RAY STRUCTURE OF A COMPLEX OF TERN N9 INFLUENZA VIRUS NEURAMINIDASE COMPLEXED WITH SIALIC ACID AT 4 DEGREES C REVEALING A SECOND SIALIC ACID BINDING SITE

Biological Source:

Source Organism:

Influenza A virus (Taxon ID: 11320)

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.70 Å

Space Group:

I 4 3 2

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:NEURAMINIDASE
Gene (Uniprot):NA
Chain IDs:A
Chain Length:388
Number of Molecules:1
Biological Source:Influenza A virus

UniProt ID:P03472 Pfam ID:PF00064

Modified Residue

Compound ID	Chain ID	Parent Comp ID	Details	2D Image
ASN	A	ASN	GLYCOSYLATION SITE

Ligand Molecules

NAG

SIA

Primary Citation

Structural evidence for a second sialic acid binding site in avian influenza virus neuraminidases.

Varghese, J.N, Colman, P.M, van Donkelaar, A, Blick, T.J, Sahasrabudhe, A, McKimm-Breschkin, J.L.Show

Proc.Natl.Acad.Sci.USA 94 11808 11812 (1997)

PMID: 9342319 DOI: 10.1073/pnas.94.22.11808

Abstact

The x-ray structure of a complex of sialic acid (Neu5Ac) with neuraminidase N9 subtype from A/tern/Australia/G70C/75 influenza virus at 4 degrees C has revealed the location of a second Neu5Ac binding site on the surface of the enzyme. At 18 degrees C, only the enzyme active site contains bound Neu5Ac. Neu5Ac binds in the second site in the chair conformation in a similar way to which it binds to hemagglutinin. The residues that interact with Neu5Ac at this second site are mostly conserved in avian strains, but not in human and swine strains, indicating that it has some as-yet-unknown biological function in birds.

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Protein

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Disease

Primary Citation of related structures

Abstact

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