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UniProtKB/Swiss-Prot P04070: Variant p.Asp77Gly

Vitamin K-dependent protein C
Gene: PROC
Variant information

Variant position:  77
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 Aspartate (D) to Glycine (G) at position 77 (D77G, p.Asp77Gly).
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 acidic (D) to glycine (G)
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

Involvement in disease:  Thrombophilia due to protein C deficiency, autosomal recessive (THPH4) [MIM:612304]: A hemostatic disorder characterized by impaired regulation of blood coagulation and a tendency to recurrent venous thrombosis. It results in a thrombotic condition that can manifest as a severe neonatal disorder or as a milder disorder with late-onset thrombophilia. The severe form leads to neonatal death through massive neonatal venous thrombosis. Often associated with ecchymotic skin lesions which can turn necrotic called purpura fulminans, this disorder is very rare. {ECO:0000269|PubMed:1511988, ECO:0000269|PubMed:1593215, ECO:0000269|PubMed:1611081, ECO:0000269|PubMed:25618265, ECO:0000269|PubMed:7841323, ECO:0000269|PubMed:7841324, ECO:0000269|PubMed:7878626}. Note=The disease is caused by mutations affecting the gene represented in this entry.
The name and a short description of the disease associated with the variant. For more information about the disease, the user can refer to OMIM, following the link provided after the disease acronym.

Variant description:  In THPH4; no effect on secretion; no effect on catalytic activity in vitro.
Any additional useful information about the variant.

Sequence information

Variant position:  77
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  461
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 43 – 461 Vitamin K-dependent protein C
Chain 43 – 197 Vitamin K-dependent protein C light chain
Domain 43 – 88 Gla
Modified residue 58 – 58 4-carboxyglutamate
Modified residue 61 – 61 4-carboxyglutamate
Modified residue 62 – 62 4-carboxyglutamate
Modified residue 67 – 67 4-carboxyglutamate
Modified residue 68 – 68 4-carboxyglutamate
Modified residue 71 – 71 4-carboxyglutamate

Literature citations

Molecular characterization of p.Asp77Gly and the novel p.Ala163Val and p.Ala163Glu mutations causing protein C deficiency.
Kovacs K.B.; Pataki I.; Bardos H.; Fekete A.; Pfliegler G.; Haramura G.; Gindele R.; Komaromi I.; Balla G.; Adany R.; Muszbek L.; Bereczky Z.;
Thromb. Res. 135:718-726(2015)

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.