4UHV image
Deposition Date 2015-03-25
Release Date 2016-01-27
Last Version Date 2024-11-13
Entry Detail
PDB ID:
4UHV
Keywords:
STRUCTURAL PROTEIN
Title:
The structure of VgrG1, the needle tip of the bacterial Type VI Secretion System
Biological Source:
Source Organism(s):
PSEUDOMONAS AERUGINOSA (Taxon ID: 208964)
Expression System(s):
Escherichia coli
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.00 Å
R-Value Free:
0.24
R-Value Work:
0.22
R-Value Observed:
0.22
Space Group:
P 63
4UHV validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:VGRG1, VALINE-GLYCINE REPEAT PROTEIN G1
Gene (Uniprot):vgrG1a
Chain IDs:A, B
Chain Length:651
Number of Molecules:2
Biological Source:PSEUDOMONAS AERUGINOSA
UniProt ID:Q9I741 Pfam ID:PF05954, PF22178, PF04717
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
MSE A MET SELENOMETHIONINE
Ligand Molecules
CL
NA
Primary Citation
The Structure of Vgrg1 from Pseudomonas Aeruginosa, the Needle Tip of the Bacterial Type Vi Secretion System
Acta Crystallogr.,Sect.D 72 34 ? (2016)
PMID: 26894532 DOI: 10.1107/S205979831502149X

Abstact

When 300 kV cryo-EM images at Scherzer focus are acquired from ∼ 100 nm thick three-dimensional protein nanocrystals using a Falcon 2 direct electron detector, Fourier transformation can reveal the crystalline lattice to surprisingly high resolutions, even though the images themselves seem to be devoid of any contrast. Here, it is reported how this lattice information can be enhanced by means of a wave finder in combination with Wiener-type maximum-likelihood filtering. This procedure paves the way towards full three-dimensional structure determination at high resolution for protein crystals.

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Primary Citation of related structures
4UHV
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