8G9V image
Entry Detail
PDB ID:
8G9V
Title:
Crystal structures of 17-beta-hydroxysteroid dehydrogenase 13
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2023-02-22
Release Date:
2023-08-09
Method Details:
Experimental Method:
Resolution:
2.65 Å
R-Value Free:
0.24
R-Value Work:
0.21
R-Value Observed:
0.21
Space Group:
P 1 21 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:17-beta-hydroxysteroid dehydrogenase 13
Mutations:Q60K, I62R, R71H, E161K
Chain IDs:A, B, C, D, E, F, G, H
Chain Length:315
Number of Molecules:8
Biological Source:Homo sapiens
Primary Citation
Structural basis of lipid-droplet localization of 17-beta-hydroxysteroid dehydrogenase 13.
Nat Commun 14 5158 5158 (2023)
PMID: 37620305 DOI: 10.1038/s41467-023-40766-0

Abstact

Hydroxysteroid 17-beta-dehydrogenase 13 (HSD17B13) is a hepatic lipid droplet-associated enzyme that is upregulated in patients with non-alcoholic fatty liver disease. Recently, there have been several reports that predicted loss of function variants in HSD17B13 protect against the progression of steatosis to non-alcoholic steatohepatitis with fibrosis and hepatocellular carcinoma. Here we report crystal structures of full length HSD17B13 in complex with its NAD+ cofactor, and with lipid/detergent molecules and small molecule inhibitors from two distinct series in the ligand binding pocket. These structures provide insights into a mechanism for lipid droplet-associated proteins anchoring to membranes as well as a basis for HSD17B13 variants disrupting function. Two series of inhibitors interact with the active site residues and the bound cofactor similarly, yet they occupy different paths leading to the active site. These structures provide ideas for structure-based design of inhibitors that may be used in the treatment of liver disease.

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