Ryanodine receptor 1 - P11716 (RYR1_RABIT)

 

Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for P11716: 53
 
Function
Calcium channel that mediates the release of Ca(2+) from the sarcoplasmic reticulum into the cytoplasm and thereby plays a key role in triggering muscle contraction following depolarization of T-tubules (PubMed:3722165, PubMed:10388749, PubMed:10097181, PubMed:12732639, PubMed:22036948, PubMed:26245150, PubMed:27662087). Repeated very high-level exercise increases the open probability of the channel and leads to Ca(2+) leaking into the cytoplasm (By similarity). Can also mediate the release of Ca(2+) from intracellular stores in neurons, and may thereby promote prolonged Ca(2+) signaling in the brain. Required for normal embryonic development of muscle fibers and skeletal muscle. Required for normal heart morphogenesis, skin development and ossification during embryogenesis. UniProt
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Subunit Structure
Homotetramer (PubMed:10097181, PubMed:15908964, PubMed:17027503, PubMed:18621707, PubMed:25470059, PubMed:25517095, PubMed:27662087, PubMed:27573175, PubMed:27468892). Can also form heterotetramers with RYR2 (PubMed:12213830). Identified in a complex composed of RYR1, PDE4D, PKA, FKBP1A and protein phosphatase 1 (PP1). Repeated very high-level exercise decreases interaction with PDE4D and protein phosphatase 1 (PP1) (By similarity). Interacts with CALM; CALM with bound calcium inhibits the RYR1 channel activity (PubMed:10601232, PubMed:11562475, PubMed:17027503). Interacts with S100A1 (By similarity). Interacts with FKBP1A; this stabilizes the closed conformation of the channel (PubMed:7669046, PubMed:10603943, PubMed:26245150, PubMed:25517095, PubMed:27468892). Interacts with CACNA1S; interaction with CACNA1S is important for activation of the RYR1 channel (PubMed:10388749). Interacts with CACNB1 (PubMed:21320436). Interacts with TRDN and ASPH; these interactions stimulate RYR1 channel activity (PubMed:9737879, PubMed:19398037). Interacts with SELENON (PubMed:18713863). UniProt
Domain
The calcium release channel activity resides in the C-terminal region while the remaining part of the protein constitutes the 'foot' structure spanning the junctional gap between the sarcoplasmic reticulum (SR) and the T-tubule (PubMed:2725677, PubMed:25517095, PubMed:27662087, PubMed:27573175, PubMed:27468892). Pore opening is mediated via the cytoplasmic calcium-binding domains that mediate a small rotation of the channel-forming transmembrane regions that then leads to channel opening (PubMed:27468892). UniProt
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Data in green originates from UniProtKB  
Variation data (sourced from UniProt) shows non-genetic variation from the ExPASy   and dbSNP   websites.
Data in yellow originates from Pfam  , by interacting with the HMMER3 web site  
Data in purple originates from Phosphosite  .
Data in orange originates from the SCOP   (version 1.75) and SCOPe   (version 2.04) classifications.
Data in grey has been calculated using BioJava  . Protein disorder predictions are based on JRONN (Troshin, P. and Barton, G. J. unpublished), a Java implementation of RONN  
  • Red: potentially disorderd region
  • Blue: probably ordered region.
Hydropathy has been calculated using a sliding window of 15 residues and summing up scores from standard hydrophobicity tables.
  • Red: hydrophobic
  • Blue: hydrophilic.
Data in lilac represent the genomic exon structure projected onto the UniProt sequence.
Data in blue originates from PDB
  • Secstruc: Secondary structure projected from representative PDB entries onto the UniProt sequence.
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Validation Track

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Data in red indicates combined ranges of Homology Models from SBKB   and the Protein Model Portal  
The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
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