8AX7 image
Deposition Date 2022-08-30
Release Date 2022-12-07
Last Version Date 2024-10-23
Entry Detail
PDB ID:
8AX7
Keywords:
MEMBRANE PROTEIN
Title:
Crystal structure of a CGRP receptor ectodomain heterodimer bound to macrocyclic inhibitor HTL0031448
Biological Source:
Source Organism:
Escherichia coli K-12 (Taxon ID: 83333)
Homo sapiens (Taxon ID: 9606)
Host Organism:
Homo sapiens
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.65 Å
R-Value Free:
0.25
R-Value Work:
0.20
R-Value Observed:
0.20
Space Group:
P 21 21 21
8AX7 validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Maltose/maltodextrin-binding periplasmic protein,Receptor activity-modifying protein 1,Calcitonin gene-related peptide type 1 receptor
Gene (Uniprot):RAMP1, malE, CALCRL
Chain IDs:A
Chain Length:593
Number of Molecules:1
Biological Source:Escherichia coli K-12, Homo sapiens
UniProt ID:P0AEX9,O60894,Q16602 Pfam ID:PF01547, PF04901, PF02793 EC:7.5.2.1
Ligand Molecules
ACT
OL0
PG4
Peptide-like Molecules
PRD_900001
Primary Citation
Novel Macrocyclic Antagonists of the CGRP Receptor Part 2: Stereochemical Inversion Induces an Unprecedented Binding Mode.
Acs Med.Chem.Lett. 13 1776 1782 (2022)
PMID: 36385934 DOI: 10.1021/acsmedchemlett.2c00400

Abstact

The diastereomeric macrocyclic calcitonin gene-related peptide (CGRP) antagonists HTL0029881 (3) and HTL0029882 (4), in which the stereochemistry of a spiro center is reversed, surprisingly demonstrate comparable potency. X-ray crystallographic characterization demonstrates that 3 binds to the CGRP receptor in a precedented manner but that 4 binds in an unprecedented, unexpected, and radically different manner. The observation of this phenomenon is noteworthy and may open novel avenues for CGRP receptor antagonist design.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
8AX7