5QDV image
Entry Detail
PDB ID:
5QDV
Keywords:
Title:
PanDDA analysis group deposition -- Crystal structure of PTP1B in complex with compound_FMOPL000574a
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2018-08-30
Release Date:
2018-10-10
Method Details:
Experimental Method:
Resolution:
1.77 Å
R-Value Free:
0.21
R-Value Work:
0.19
R-Value Observed:
0.19
Space Group:
P 31 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Tyrosine-protein phosphatase non-receptor type 1
Mutations:C32S, C92V
Chain IDs:A
Chain Length:321
Number of Molecules:1
Biological Source:Homo sapiens
Primary Citation
An expanded allosteric network in PTP1B by multitemperature crystallography, fragment screening, and covalent tethering.
Elife 7 ? ? (2018)
PMID: 29877794 DOI: 10.7554/eLife.36307

Abstact

Allostery is an inherent feature of proteins, but it remains challenging to reveal the mechanisms by which allosteric signals propagate. A clearer understanding of this intrinsic circuitry would afford new opportunities to modulate protein function. Here, we have identified allosteric sites in protein tyrosine phosphatase 1B (PTP1B) by combining multiple-temperature X-ray crystallography experiments and structure determination from hundreds of individual small-molecule fragment soaks. New modeling approaches reveal 'hidden' low-occupancy conformational states for protein and ligands. Our results converge on allosteric sites that are conformationally coupled to the active-site WPD loop and are hotspots for fragment binding. Targeting one of these sites with covalently tethered molecules or mutations allosterically inhibits enzyme activity. Overall, this work demonstrates how the ensemble nature of macromolecular structure, revealed here by multitemperature crystallography, can elucidate allosteric mechanisms and open new doors for long-range control of protein function.

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