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UniProtKB/Swiss-Prot P18858: Variant p.Arg62Trp

DNA ligase 1
Gene: LIG1
Variant information

Variant position:  62
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 Arginine (R) to Tryptophan (W) at position 62 (R62W, p.Arg62Trp).
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:  Change from large size and basic (R) to large size and aromatic (W)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  -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

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

Sequence information

Variant position:  62
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  919
The length of the canonical sequence.

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                         WNG--VVSESDSPVKRPGRKAARVLGSEGEEEDE------------------------------------ALSPAKGQK

Mouse                         RNQ--VVPESDSPVKRTGRKVAQVLSCEGEDEDE-------

Rat                           RNR--AVPESDSPVKRPGRKVAQVLSSEGEDEDE-------


Caenorhabditis elegans        -----------------------------------------

Drosophila                    -----------------------------------------


Baker's yeast                 -----------------------------------------

Fission yeast                 -----------------------------------------

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.

Chain 1 – 919 DNA ligase 1
Region 1 – 270 Disordered
Compositional bias 52 – 77 Basic and acidic residues
Modified residue 47 – 47 Phosphoserine
Modified residue 49 – 49 Phosphoserine
Modified residue 51 – 51 Phosphoserine
Modified residue 66 – 66 Phosphoserine
Modified residue 76 – 76 Phosphoserine

Literature citations

NIEHS SNPs program;
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA]; VARIANTS VAL-24; TRP-62; GLU-249; SER-267; MET-349; ILE-369; VAL-480; ILE-614 AND LEU-677;

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.