6L48

Structure of the human sterol O-acyltransferase 1 in resting state


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural insights into the inhibition mechanism of human sterol O-acyltransferase 1 by a competitive inhibitor.

Guan, C.Niu, Y.Chen, S.C.Kang, Y.Wu, J.X.Nishi, K.Chang, C.C.Y.Chang, T.Y.Luo, T.Chen, L.

(2020) Nat Commun 11: 2478-2478

  • DOI: 10.1038/s41467-020-16288-4
  • Primary Citation of Related Structures:  
    6L47, 6L48

  • PubMed Abstract: 
  • Sterol O-acyltransferase 1 (SOAT1) is an endoplasmic reticulum (ER) resident, multi-transmembrane enzyme that belongs to the membrane-bound O-acyltransferase (MBOAT) family. It catalyzes the esterification of cholesterol to generate cholesteryl esters for cholesterol storage ...

    Sterol O-acyltransferase 1 (SOAT1) is an endoplasmic reticulum (ER) resident, multi-transmembrane enzyme that belongs to the membrane-bound O-acyltransferase (MBOAT) family. It catalyzes the esterification of cholesterol to generate cholesteryl esters for cholesterol storage. SOAT1 is a target to treat several human diseases. However, its structure and mechanism remain elusive since its discovery. Here, we report the structure of human SOAT1 (hSOAT1) determined by cryo-EM. hSOAT1 is a tetramer consisted of a dimer of dimer. The structure of hSOAT1 dimer at 3.5 Å resolution reveals that a small molecule inhibitor CI-976 binds inside the catalytic chamber and blocks the accessibility of the active site residues H460, N421 and W420. Our results pave the way for future mechanistic study and rational drug design targeting hSOAT1 and other mammalian MBOAT family members.


    Organizational Affiliation

    Academy for Advanced Interdisciplinary Studies, Peking University, 100871, Beijing, China. chenlei2016@pku.edu.cn.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Sterol O-acyltransferase 1 AB485Homo sapiensMutation(s): 0 
Gene Names: SOAT1ACACTACACT1ACATACAT1SOATSTAT
EC: 2.3.1.26
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
O-acyltransferases
Protein: 
sterol O-acyltransferase (ACAT1, SOAT1) in complex with CI-976
Find proteins for P35610 (Homo sapiens)
Explore P35610 
Go to UniProtKB:  P35610
NIH Common Fund Data Resources
PHAROS:  P35610
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CLR
Query on CLR

Download Ideal Coordinates CCD File 
A, B
CHOLESTEROL
C27 H46 O
HVYWMOMLDIMFJA-DPAQBDIFSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Ministry of Science and Technology (China)China2016YFA0502004
National Natural Science Foundation of ChinaChina31622021
National Science Foundation (China)China91857000
National Science Foundation (China)China31821091
National Natural Science Foundation of ChinaChina31870833

Revision History  (Full details and data files)

  • Version 1.0: 2020-04-29
    Type: Initial release
  • Version 1.1: 2020-10-07
    Changes: Database references