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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q9Y399: Variant p.Arg110Cys

Small ribosomal subunit protein uS2m
Gene: MRPS2
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Variant information Variant position: help 110 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 Cysteine (C) at position 110 (R110C, p.Arg110Cys). 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 medium size and polar (C) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help -3 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 COXPD36; results in impaired assembly of the small mitoribosomal subunit and impaired mitochondrial translation in patient cells. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 110 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 296 The length of the canonical sequence.
Location on the sequence: help HLGHKAGCRHRFMEPYIFGS R LDHDIIDLEQTATHLQLALN 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                         HLGHKAGCRHRFMEPYIFGSRLDHDIIDLEQTATHLQLALN

Mouse                         HLGHKAGCRHRFMEPYIFGNRLGQDIIDLDQTALNLQLALN

Bovine                        HLGHKAGCRHRFMEPYIFGSRLGQDIIDLEQTATHLQLALN

Slime mold                    HLGESAWKWNPTLKSFIYKEISQIHIIRIPAFLLIIGKVLN

Baker's yeast                 PPGF---INARILRDNFKRQQFKENEILV-KSLKFIARNMN

Fission yeast                 ALGH---LKHKAFRDLLCRRLFAEHEVER-QSNLYIYRNPE
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 – 296 Small ribosomal subunit protein uS2m
Beta strand 106 – 110



Literature citations
Bi-allelic mutations in the mitochondrial ribosomal protein MRPS2 cause sensorineural hearing loss, hypoglycemia, and multiple OXPHOS complex deficiencies.
Gardeitchik T.; Mohamed M.; Ruzzenente B.; Karall D.; Guerrero-Castillo S.; Dalloyaux D.; van den Brand M.; van Kraaij S.; van Asbeck E.; Assouline Z.; Rio M.; de Lonlay P.; Scholl-Buergi S.; Wolthuis D.F.G.J.; Hoischen A.; Rodenburg R.J.; Sperl W.; Urban Z.; Brandt U.; Mayr J.A.; Wong S.; de Brouwer A.P.M.; Nijtmans L.; Munnich A.; Roetig A.; Wevers R.A.; Metodiev M.D.; Morava E.;
Am. J. Hum. Genet. 102:685-695(2018)
Cited for: FUNCTION; INVOLVEMENT IN COXPD36; VARIANTS COXPD36 CYS-110; ASN-114 AND HIS-138; CHARACTERIZATION OF VARIANTS COXPD36 CYS-110; ASN-114 AND HIS-138;
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.