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UniProtKB/Swiss-Prot P53350: Variant p.Arg518His

Serine/threonine-protein kinase PLK1
Gene: PLK1
Variant information

Variant position:  518
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 Histidine (H) at position 518 (R518H, p.Arg518His).
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 medium size and polar (H)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  0
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:  518
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  603
The length of the canonical sequence.

Location on the sequence:   TPREGDELARLPYLRTWFRT  R SAIILHLSNGSVQINFFQDH
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                         TPREGDELARLPYLRTWFRTRSAIILHLSNGSVQINFFQDH

Mouse                         TPREGDELARLPYLRTWFRTRSAIILHLSNGTVQINFFQDH

Rat                           TPREGDELARLPYLRTWFRTRSAIILHLSNGTVQINFFQDH

Bovine                        TPREGDELARLPYLRTWFRTRSAIILHLSNGCVQINFFQDH

Xenopus laevis                TPREGDELARLPFLRTWFRTRSAIILHLSNGTVQINFFQDH

Xenopus tropicalis            TPREGDELARLPFLRTWFRTRSAIILHLSNGTVQINFFQDH

Caenorhabditis elegans        EQRAGDDLARLPTLRVWFRTKSAIVLHLSNGTVQINFFNDH

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 2 – 603 Serine/threonine-protein kinase PLK1
Domain 515 – 584 POLO box 2
Modified residue 498 – 498 Phosphothreonine
Mutagenesis 538 – 538 H -> A. In pincer mutant; loss of centrosomal location and decreased interaction with phosphorylated CDC25C and BUB1; when associated with M-540.
Beta strand 518 – 525


Literature citations

Patterns of somatic mutation in human cancer genomes.
Greenman C.; Stephens P.; Smith R.; Dalgliesh G.L.; Hunter C.; Bignell G.; Davies H.; Teague J.; Butler A.; Stevens C.; Edkins S.; O'Meara S.; Vastrik I.; Schmidt E.E.; Avis T.; Barthorpe S.; Bhamra G.; Buck G.; Choudhury B.; Clements J.; Cole J.; Dicks E.; Forbes S.; Gray K.; Halliday K.; Harrison R.; Hills K.; Hinton J.; Jenkinson A.; Jones D.; Menzies A.; Mironenko T.; Perry J.; Raine K.; Richardson D.; Shepherd R.; Small A.; Tofts C.; Varian J.; Webb T.; West S.; Widaa S.; Yates A.; Cahill D.P.; Louis D.N.; Goldstraw P.; Nicholson A.G.; Brasseur F.; Looijenga L.; Weber B.L.; Chiew Y.-E.; DeFazio A.; Greaves M.F.; Green A.R.; Campbell P.; Birney E.; Easton D.F.; Chenevix-Trench G.; Tan M.-H.; Khoo S.K.; Teh B.T.; Yuen S.T.; Leung S.Y.; Wooster R.; Futreal P.A.; Stratton M.R.;
Nature 446:153-158(2007)
Cited for: VARIANTS [LARGE SCALE ANALYSIS] LEU-12; PHE-261; VAL-332; HIS-463 AND HIS-518;

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.