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UniProtKB/Swiss-Prot P07225: Variant p.Asn258Ser

Vitamin K-dependent protein S
Gene: PROS1
Variant information

Variant position:  258
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  Disease [Disclaimer]
The variants are classified into three categories: Disease, Polymorphism and Unclassified.
  • Disease: Variants implicated in disease according to literature reports.
  • Polymorphism: Variants not reported to be implicated in disease.
  • Unclassified: Variants with uncertain implication in disease according to literature reports. Evidence against or in favor of a pathogenic role is limited and/or conflicting.

Residue change:  From Asparagine (N) to Serine (S) at position 258 (N258S, p.Asn258Ser).
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 medium size and polar (N) to small size and polar (S)
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

Variant description:  In THPH5; produces around 30% of PROS1 levels compared to wild-type; has impaired secretion; intracellular degradation of unsecreted material is found.
Any additional useful information about the variant.

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

Sequence information

Variant position:  258
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  676
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.

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 42 – 676 Vitamin K-dependent protein S
Domain 243 – 283 EGF-like 4; calcium-binding
Disulfide bond 252 – 265

Literature citations

Cooper D.N.;
Cited for: VARIANT THPH5 SER-258;

Detection and characterization of seven novel protein S (PROS) gene lesions: evaluation of reverse transcript-polymerase chain reaction as a mutation screening strategy.
Formstone C.J.; Wacey A.I.; Berg L.-P.; Rahman S.; Bevan D.; Rowley M.; Voke J.; Bernardi F.; Legnani C.; Simioni P.; Girolami A.; Tuddenham E.G.D.; Kakkar V.V.; Cooper D.N.;
Blood 86:2632-2641(1995)
Cited for: VARIANTS THPH5 SER-258 AND THR-611;

Genetic and phenotypic variability between families with hereditary protein S deficiency.
Rezende S.M.; Lane D.A.; Zoeller B.; Mille-Baker B.; Laffan M.; Dalhbaeck B.; Simmonds R.E.;
Thromb. Haemost. 87:258-265(2002)

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.