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UniProtKB/Swiss-Prot P29320: Variant p.Lys207Asn

Ephrin type-A receptor 3
Gene: EPHA3
Variant information

Variant position:  207
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  US
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 Lysine (K) to Asparagine (N) at position 207 (K207N, p.Lys207Asn).
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 (K) to medium size and polar (N)
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

Variant description:  In a pancreatic ductal adenocarcinoma sample; somatic mutation.
Any additional useful information about the variant.

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



Sequence information

Variant position:  207
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  983
The length of the canonical sequence.

Location on the sequence:   GACVALVSVRVYFKKCPFTV  K NLAMFPDTVPMDSQSLVEVR
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                         GACVALVSVRVYFKKCPFTVKNLAMFPDTVPMDSQSLVEVR

Mouse                         GACVALVSVRVYFKKCPFTVKNLAMFPDTVPMDSQSLVEVR

Rat                           GACVALVSVRVYFKKCPFTVKNLAMFPDTVPMDSQSLVEVR

Chicken                       GACVALVSVRVYFKKCPFTVKNLAMFPDTVPMDSQSLVEVR

Zebrafish                     GACIALVSVRVFYKRCPLAVLNLARFPDTVTGGDSALVEVR

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 21 – 983 Ephrin type-A receptor 3
Topological domain 21 – 541 Extracellular
Domain 29 – 207 Eph LBD


Literature citations

Mutational profiling of kinases in human tumours of pancreatic origin identifies candidate cancer genes in ductal and ampulla of vater carcinomas.
Corbo V.; Ritelli R.; Barbi S.; Funel N.; Campani D.; Bardelli A.; Scarpa A.;
PLoS ONE 5:E12653-E12653(2010)
Cited for: VARIANT ASN-207;

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.