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UniProtKB/Swiss-Prot P05106: Variant p.Cys586Phe

Integrin beta-3
Gene: ITGB3
Variant information

Variant position:  586
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 Cysteine (C) to Phenylalanine (F) at position 586 (C586F, p.Cys586Phe).
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 (C) to large size and aromatic (F)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  -2
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:  Glanzmann thrombasthenia (GT) [MIM:273800]: A common inherited disease of platelet aggregation. It is characterized by mucocutaneous bleeding of mild-to-moderate severity. GT has been classified clinically into types I and II. In type I, platelets show absence of the glycoprotein IIb-IIIa complexes at their surface and lack fibrinogen and clot retraction capability. In type II, the platelets express the GPIIb-IIIa complex at reduced levels, have detectable amounts of fibrinogen, and have low or moderate clot retraction capability. {ECO:0000269|PubMed:10233432, ECO:0000269|PubMed:11588040, ECO:0000269|PubMed:11897046, ECO:0000269|PubMed:12083483, ECO:0000269|PubMed:12353082, ECO:0000269|PubMed:1371279, ECO:0000269|PubMed:1438206, ECO:0000269|PubMed:15583747, ECO:0000269|PubMed:15634267, ECO:0000269|PubMed:15748237, ECO:0000269|PubMed:1602006, ECO:0000269|PubMed:20020534, ECO:0000269|PubMed:2392682, ECO:0000269|PubMed:29084015, ECO:0000269|PubMed:8781422, ECO:0000269|PubMed:9215749, ECO:0000269|PubMed:9376589, ECO:0000269|PubMed:9684783, ECO:0000269|PubMed:9790984}. 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 GT.
Any additional useful information about the variant.

Sequence information

Variant position:  586
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  788
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.




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 27 – 788 Integrin beta-3
Topological domain 27 – 718 Extracellular
Repeat 554 – 592 III
Region 463 – 629 Cysteine-rich tandem repeats
Glycosylation 585 – 585 N-linked (GlcNAc...) asparagine
Disulfide bond 432 – 681
Disulfide bond 570 – 601
Disulfide bond 586 – 593

Literature citations

Three novel integrin beta3 subunit missense mutations (H280P, C560F, and G579S) in thrombasthenia, including one (H280P) prevalent in Japanese patients.
Ambo H.; Kamata T.; Handa M.; Taki M.; Kuwajima M.; Kawai Y.; Oda A.; Murata M.; Takada Y.; Watanabe K.; Ikeda Y.;
Biochem. Biophys. Res. Commun. 251:763-768(1998)
Cited for: VARIANTS GT PRO-306; PHE-586; SER-598 AND SER-605;

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.