6H3B image
Deposition Date 2018-07-18
Release Date 2018-09-12
Last Version Date 2024-11-13
Entry Detail
PDB ID:
6H3B
Keywords:
Title:
Lysozyme: Machining protein microcrystals for structure determination by electron diffraction
Biological Source:
Source Organism:
Gallus gallus (Taxon ID: 9031)
Method Details:
Experimental Method:
Resolution:
1.90 Å
R-Value Free:
0.28
R-Value Work:
0.29
Space Group:
P 43 21 2
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Lysozyme C
Gene (Uniprot):LYZ
Chain IDs:A
Chain Length:129
Number of Molecules:1
Biological Source:Gallus gallus
Ligand Molecules
Primary Citation
Machining protein microcrystals for structure determination by electron diffraction.
Proc. Natl. Acad. Sci. U.S.A. 115 9569 9573 (2018)
PMID: 30171169 DOI: 10.1073/pnas.1809978115

Abstact

We demonstrate that ion-beam milling of frozen, hydrated protein crystals to thin lamella preserves the crystal lattice to near-atomic resolution. This provides a vehicle for protein structure determination, bridging the crystal size gap between the nanometer scale of conventional electron diffraction and micron scale of synchrotron microfocus beamlines. The demonstration that atomic information can be retained suggests that milling could provide such detail on sections cut from vitrified cells.

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Primary Citation of related structures