3ILA image
Deposition Date 2009-08-06
Release Date 2009-11-17
Last Version Date 2024-04-03
Entry Detail
PDB ID:
3ILA
Title:
Crystal structure of rabbit ryanodine receptor 1 N-terminal domain (9-205)
Biological Source:
Source Organism:
Host Organism:
Method Details:
Experimental Method:
Resolution:
2.90 Å
R-Value Free:
0.31
R-Value Work:
0.27
R-Value Observed:
0.27
Space Group:
P 1 21 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Ryanodine receptor 1
Gene (Uniprot):RYR1
Chain IDs:A, B, C, D, E, F, G, H, I
Chain Length:197
Number of Molecules:9
Biological Source:Oryctolagus cuniculus
Ligand Molecules
Primary Citation
Crystal structures of the N-terminal domains of cardiac and skeletal muscle ryanodine receptors: insights into disease mutations.
Structure 17 1505 1514 (2009)
PMID: 19913485 DOI: 10.1016/j.str.2009.08.016

Abstact

Ryanodine receptors (RyRs) are channels governing the release of Ca(2+) from the sarcoplasmic or endoplasmic reticulum. They are required for the contraction of both skeletal (RyR1) and cardiac (RyR2) muscles. Mutations in both RyR1 and RyR2 have been associated with severe genetic disorders, but high-resolution data describing the disease variants in detail have been lacking. Here we present the crystal structures of the N-terminal domains of both RyR2 (1-217) and RyR1 (9-205) at 2.55 A and 2.9 A, respectively. The domains map in a hot spot region for disease mutations. Both structures consist of a core beta trefoil domain flanked by an alpha helix. Crystal structures of two RyR2 disease mutants, A77V (2.2 A) and V186M (1.7 A), show that the mutations cause distinct local changes in the surface of the protein. A RyR2 deletion mutant causes significant changes in the thermal stability. The disease positions highlight two putative binding interfaces required for normal RyR function.

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Disease

Primary Citation of related structures