8R3D image
Deposition Date 2023-11-08
Release Date 2024-03-06
Last Version Date 2024-03-06
Entry Detail
PDB ID:
8R3D
Keywords:
SUGAR BINDING PROTEIN
Title:
Crystal structure of Pent only at pH 8.8
Biological Source:
Source Organism:
Enterobacteria phage L1 (Taxon ID: 268588)
Host Organism:
Escherichia coli BL21(DE3)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.71 Å
R-Value Free:
0.18
R-Value Work:
0.16
R-Value Observed:
0.16
Space Group:
P 21 21 21
8R3D validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Beta propeller
Chain IDs:A, B, C, D, E
Chain Length:48
Number of Molecules:5
Biological Source:Enterobacteria phage L1
UniProt ID:A0A140UHM9 Pfam ID:PF14517
Ligand Molecules
NDG
Primary Citation
Multivalent Calixarene Complexation of a Designed Pentameric Lectin.
Biomacromolecules 25 1303 1309 (2024)
PMID: 38227741 DOI: 10.1021/acs.biomac.3c01280

Abstact

We describe complex formation between a designed pentameric β-propeller and the anionic macrocycle sulfonato-calix[8]arene (sclx8), as characterized by X-ray crystallography and NMR spectroscopy. Two crystal structures and 15N HSQC experiments reveal a single calixarene binding site in the concave pocket of the β-propeller toroid. Despite the symmetry mismatch between the pentameric protein and the octameric macrocycle, they form a high affinity multivalent complex, with the largest protein-calixarene interface observed to date. This system provides a platform for investigating multivalency.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
8R3B
8R3C