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UniProtKB/Swiss-Prot O75648: Variant p.Val279Met

Mitochondrial tRNA-specific 2-thiouridylase 1
Gene: TRMU
Variant information

Variant position:  279
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  LB/B
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:  From Valine (V) to Methionine (M) at position 279 (V279M, p.Val279Met).
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:  Similar physico-chemical property. Both residues are medium size and hydrophobic.
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  1
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

Other resources:  
Links to websites of interest for the variant.



Sequence information

Variant position:  279
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  421
The length of the canonical sequence.

Location on the sequence:   WFLYTLGQRANIGGLREPWY  V VEKDSVKGDVFVAPRTDHPA
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: 
The multiple alignment of the region surrounding the variant against various orthologous sequences.

Human                         WFLYTLGQRANI------GGLREP-----WYVVEKDSVKGDVFVAPRT--DHPA

Mouse                         WFLYTLGQRAKI------SGLREP-----WYVVEKDGTKGD

Rat                           WFLYTLGQRAKI------SGLSEP-----WYVVEKDGTKGD

Chicken                       WFLYTIGQRARL------AGLQGA-----WFVVDKDVSTGD

Zebrafish                     WFTLTLGQRARI------GGRADA-----WFVVDKDVTTAD

Caenorhabditis elegans        IHQFTIGKRIN-------GKYLEARSHLGFFVSHIHSDTGD

Drosophila                    IHQWTVGQRCRL------SSFLQP-----YFVARKEAASNT

Slime mold                    SVCYTMGQKANI------DSLSER-----YFIVRSDIERNI

Baker's yeast                 LWSYTIGQKVGISMPQADPNYQGT-----WFVSEKLRDTNE

Fission yeast                 IWSLTVGERCGLSLPQAQSEYFGR-----WYVWKKDIKNNA

Sequence annotation in neighborhood:  
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 – 421 Mitochondrial tRNA-specific 2-thiouridylase 1
Site 267 – 267 Interaction with tRNA
Alternative sequence 167 – 421 Missing. In isoform 5.


Literature citations

Acute infantile liver failure due to mutations in the TRMU gene.
Zeharia A.; Shaag A.; Pappo O.; Mager-Heckel A.-M.; Saada A.; Beinat M.; Karicheva O.; Mandel H.; Ofek N.; Segel R.; Marom D.; Roetig A.; Tarassov I.; Elpeleg O.;
Am. J. Hum. Genet. 85:401-407(2009)
Cited for: VARIANTS LFIT HIS-77 AND ASP-272; VARIANTS SER-10; SER-14 AND MET-279;

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.