Structure of the Angiotensin receptor revealed by serial femtosecond crystallography

Cell. 2015 May 7;161(4):833-44. doi: 10.1016/j.cell.2015.04.011. Epub 2015 Apr 23.

Abstract

Angiotensin II type 1 receptor (AT(1)R) is a G protein-coupled receptor that serves as a primary regulator for blood pressure maintenance. Although several anti-hypertensive drugs have been developed as AT(1)R blockers (ARBs), the structural basis for AT(1)R ligand-binding and regulation has remained elusive, mostly due to the difficulties of growing high-quality crystals for structure determination using synchrotron radiation. By applying the recently developed method of serial femtosecond crystallography at an X-ray free-electron laser, we successfully determined the room-temperature crystal structure of the human AT(1)R in complex with its selective antagonist ZD7155 at 2.9-Å resolution. The AT(1)R-ZD7155 complex structure revealed key structural features of AT(1)R and critical interactions for ZD7155 binding. Docking simulations of the clinically used ARBs into the AT(1)R structure further elucidated both the common and distinct binding modes for these anti-hypertensive drugs. Our results thereby provide fundamental insights into AT(1)R structure-function relationship and structure-based drug design.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Amino Acid Sequence
  • Angiotensin II Type 1 Receptor Blockers / chemistry
  • Angiotensin II Type 1 Receptor Blockers / pharmacology*
  • Crystallography, X-Ray
  • Humans
  • Molecular Sequence Data
  • Mutagenesis
  • Naphthyridines / chemistry
  • Naphthyridines / pharmacology
  • Receptor, Angiotensin, Type 1 / chemistry*
  • Receptor, Angiotensin, Type 1 / genetics
  • Receptor, Angiotensin, Type 1 / metabolism
  • Sequence Alignment

Substances

  • AGTR1 protein, human
  • Angiotensin II Type 1 Receptor Blockers
  • Naphthyridines
  • Receptor, Angiotensin, Type 1
  • ZD 7155

Associated data

  • PDB/4YAY