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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P21817: Variant p.Arg2508Gly

Ryanodine receptor 1
Gene: RYR1
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Variant information Variant position: help 2508 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help LP/P [Disclaimer] The variants are classified into three categories: LP/P, LB/B and US.
  • LP/P: likely pathogenic or pathogenic.
  • LB/B: likely benign or benign.
  • US: uncertain significance

Residue change: help From Arginine (R) to Glycine (G) at position 2508 (R2508G, p.Arg2508Gly). Indicates the amino acid change of the variant. The one-letter and three-letter codes for amino acids used in UniProtKB/Swiss-Prot are those adopted by the commission on Biochemical Nomenclature of the IUPAC-IUB.
Physico-chemical properties: help Change from large size and basic (R) to glycine (G) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help -2 The score within a Blosum matrix for the corresponding wild-type to variant amino acid change. The log-odds score measures the logarithm for the ratio of the likelihood of two amino acids appearing by chance. The Blosum62 substitution matrix is used. This substitution matrix contains scores for all possible exchanges of one amino acid with another:
  • Lowest score: -4 (low probability of substitution).
  • Highest score: 11 (high probability of substitution).
More information can be found on the following page

Variant description: help In CMYP1A; increases sensitivity to caffeine and 4-chloro-m-cresol. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 2508 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 5038 The length of the canonical sequence.
Location on the sequence: help PKMSASFVPDHKASMVLFLD R VYGIENQDFLLHVLDVGFLP The residue change on the sequence. Unless the variant is located at the beginning or at the end of the protein sequence, both residues upstream (20) and downstream (20) of the variant will be shown.
Residue conservation: help The multiple alignment of the region surrounding the variant against various orthologous sequences.
Human                         PKMSASFVPDHKASMVLFLDRVYGIENQDFLLHVLDVGFLP

Mouse                         PKMSASFVPDHKASMVLFLDRVYGIENQDFLLHVLDVGFLP

Rat                           PKMSASFVPDHKASMVLFLDRVYGIENQDFLLHVLDVGFLP

Pig                           PKMSASFVPDHKASMVLFLDRVYGIENQDFLLHVLDVGFLP

Rabbit                        PKMSASFVPDHKASMVLFLDRVYGIENQDFLLHVLDVGFLP

Sequence annotation in neighborhood: help The regions or sites of interest surrounding the variant. In general the features listed are posttranslational modifications, binding sites, enzyme active sites, local secondary structure or other characteristics reported in the cited references. The "Sequence annotation in neighborhood" lines have a fixed format:
  • Type: the type of sequence feature.
  • Positions: endpoints of the sequence feature.
  • Description: contains additional information about the feature.
TypePositionsDescription
Chain 1 – 5038 Ryanodine receptor 1
Topological domain 1 – 4559 Cytoplasmic
Region 841 – 2959 6 X approximate repeats
Mutagenesis 2508 – 2508 R -> K. Increases sensitivity to caffeine and 4-chloro-m-cresol.
Mutagenesis 2508 – 2508 R -> S. Increases sensitivity to caffeine and 4-chloro-m-cresol.



Literature citations
Functional properties of RYR1 mutations identified in Swedish patients with malignant hyperthermia and central core disease.
Vukcevic M.; Broman M.; Islander G.; Bodelsson M.; Ranklev-Twetman E.; Muller C.R.; Treves S.;
Anesth. Analg. 111:185-190(2010)
Cited for: VARIANTS MHS1 ASN-382; LYS-1058 AND ARG-1393; VARIANT CMYP1A GLY-2508; VARIANT HIS-1679; Several ryanodine receptor type 1 gene mutations of p.Arg2508 are potential sources of malignant hyperthermia.
Miyoshi H.; Yasuda T.; Otsuki S.; Kondo T.; Haraki T.; Mukaida K.; Nakamura R.; Hamada H.; Kawamoto M.;
Anesth. Analg. 121:994-1000(2015)
Cited for: CHARACTERIZATION OF VARIANT CMYP1A GLY-2508; CHARACTERIZATION OF VARIANT MHS1 HIS-2508; MUTAGENESIS OF ARG-2508;
Disclaimer: Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. They are not in any way intended to be used as a substitute for professional medical advice, diagnostic, treatment or care.