6CRD image
Deposition Date 2018-03-16
Release Date 2019-01-23
Last Version Date 2024-11-06
Entry Detail
PDB ID:
6CRD
Keywords:
viral protein/hydrolase
Title:
INFLUENZA VIRUS NEURAMINIDASE SUBTYPE N9 (TERN) with tetrabrachion (TB) domain stalk
Biological Source:
Source Organism:
Staphylothermus marinus (Taxon ID: 2280)
Influenza A virus (strain A/Tern/Australia/G70C/1975 H11N9) (Taxon ID: 384509)
Host Organism:
Insect cell expression vector pTIE1
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.57 Å
R-Value Free:
0.30
R-Value Work:
0.20
R-Value Observed:
0.21
Space Group:
P 1 21 1
6CRD validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Tetrabrachion,Neuraminidase
Gene (Uniprot):NA
Chain IDs:A, B, C, D, E, F, G, H
Chain Length:473
Number of Molecules:8
Biological Source:Staphylothermus marinus, Influenza A virus (strain A/Tern/Australia/G70C/1975 H11N9)
UniProt ID:Q54436,P03472 Pfam ID:PF11401, PF00064
Ligand Molecules
NAG
Primary Citation
Structure of an Influenza A virus N9 neuraminidase with a tetrabrachion-domain stalk.
Acta Crystallogr.,Sect.F 75 89 97 (2019)
PMID: 30713159 DOI: 10.1107/S2053230X18017892

Abstact

The influenza neuraminidase (NA) is a homotetramer with head, stalk, transmembrane and cytoplasmic regions. The structure of the NA head with a stalk has never been determined. The NA head from an N9 subtype influenza A virus, A/tern/Australia/G70C/1975 (H1N9), was expressed with an artificial stalk derived from the tetrabrachion (TB) tetramerization domain from Staphylothermus marinus. The NA was successfully crystallized both with and without the TB stalk, and the structures were determined to 2.6 and 2.3 Å resolution, respectively. Comparisons of the two NAs with the native N9 NA structure from egg-grown virus showed that the artificial TB stalk maintained the native NA head structure, supporting previous biological observations.

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Primary Citation of related structures
7NN9