Database of articles cited by EMDB/PDB/SASBDB data

Keywords
Structure methods	All X-ray diffraction NMR electron microscopy small angle scattering neutron diffraction fiber diffraction powder diffraction infrared spectroscopy EPR fluorescence transfer theoretical model Hybrid
Author
Journal
IF	>30 >20 >10 >5 all

Title	Structural basis for catalysis and substrate specificity of human ACAT1.
Journal, issue, pages	Nature, Vol. 581, Issue 7808, Page 333-338, Year 2020
Publish date	May 13, 2020
Authors	Hongwu Qian / Xin Zhao / Renhong Yan / Xia Yao / Shuai Gao / Xue Sun / Ximing Du / Hongyuan Yang / Catherine C L Wong / Nieng Yan /
PubMed Abstract	As members of the membrane-bound O-acyltransferase (MBOAT) enzyme family, acyl-coenzyme A:cholesterol acyltransferases (ACATs) catalyse the transfer of an acyl group from acyl-coenzyme A to ...As members of the membrane-bound O-acyltransferase (MBOAT) enzyme family, acyl-coenzyme A:cholesterol acyltransferases (ACATs) catalyse the transfer of an acyl group from acyl-coenzyme A to cholesterol to generate cholesteryl ester, the primary form in which cholesterol is stored in cells and transported in plasma. ACATs have gained attention as potential drug targets for the treatment of diseases such as atherosclerosis, Alzheimer's disease and cancer. Here we present the cryo-electron microscopy structure of human ACAT1 as a dimer of dimers. Each protomer consists of nine transmembrane segments, which enclose a cytosolic tunnel and a transmembrane tunnel that converge at the predicted catalytic site. Evidence from structure-guided mutational analyses suggests that acyl-coenzyme A enters the active site through the cytosolic tunnel, whereas cholesterol may enter from the side through the transmembrane tunnel. This structural and biochemical characterization helps to rationalize the preference of ACAT1 for unsaturated acyl chains, and provides insight into the catalytic mechanism of enzymes within the MBOAT family.
External links	Nature / PubMed:32433614
Methods	EM (single particle)
Resolution	3.0 - 3.1 Å
Structure data	20238 6p2j EMDB-20238, PDB-6p2j: Dimeric structure of ACAT1 Method: EM (single particle) / Resolution: 3.0 Å 20239 6p2p EMDB-20239, PDB-6p2p: Tetrameric structure of ACAT1 Method: EM (single particle) / Resolution: 3.1 Å
Chemicals	ChemComp-3VV: S-{(3R,5R,9R)-1-[(2R,3S,4R,5R)-5-(6-amino-9H-purin-9-yl)-4-hydroxy-3-(phosphonooxy)tetrahydrofuran-2-yl]-3,5,9-trihydroxy-8,8-dimethyl-3,5-dioxido-10,14-dioxo-2,4,6-trioxa-11,15-diaza-3lambda~5~,5lambda~5~-diphosphaheptadecan-17-yl} (9Z)-octadec-9-enethioate (non-preferred name)
Source	homo sapiens (human)
Keywords	TRANSFERASE / MBOAT