8PKN image
Entry Detail
PDB ID:
8PKN
EMDB ID:
Keywords:
Title:
CryoEM structure of catalytic domain of human HMG-CoA reductase with its inhibitor atorvastatin
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2023-06-27
Release Date:
2025-01-15
Method Details:
Experimental Method:
Resolution:
2.26 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:3-hydroxy-3-methylglutaryl-coenzyme A reductase
Chain IDs:A
Chain Length:423
Number of Molecules:1
Biological Source:Homo sapiens
Ligand Molecules
Primary Citation
Cryo-EM structures of apo and atorvastatin-bound human 3-hydroxy-3-methylglutaryl-coenzyme A reductase.
Acta Crystallogr.,Sect.F 81 118 122 (2025)
PMID: 39976191 DOI: 10.1107/S2053230X25001098

Abstact

The enzyme 3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMGR) regulates the level of cholesterol by catalysing the formation/production of mevalonate and has therefore become an important pharmaceutical target for coronary heart disease. Here, we report the cryo-EM structure of the catalytic part of the enzyme in the apo form and bound with its inhibitor atorvastatin, a commonly used drug in cardiovascular disease, at resolutions of 2.1 and 2.3 Å, respectively. In the cryo-EM maps, part of the N-domain corresponding to amino acids 439-487 is well ordered and could be modelled completely. Atorvastatin molecules were found to occupy all four active sites of the tetrameric complex, and the binding does not alter the conformation of the protein or the active site. The method described here exploits graphene oxide as an additional support and could be used as an alternative to elucidate the structures of pharmaceutical target compounds that are difficult to co-crystallize with human HMGR and for sparsely available samples in drug discovery.

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Primary Citation of related structures