8AX6 image
Deposition Date 2022-08-30
Release Date 2022-12-07
Last Version Date 2024-10-16
Entry Detail
PDB ID:
8AX6
Keywords:
MEMBRANE PROTEIN
Title:
Crystal structure of a CGRP receptor ectodomain heterodimer bound to macrocyclic inhibitor HTL0029882
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:
1.90 Å
R-Value Free:
0.24
R-Value Work:
0.19
R-Value Observed:
0.19
Space Group:
P 21 21 21
8AX6 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
OP9
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

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Chemical

Disease

Primary Citation of related structures
8AX6