Home  |  Contact

UniProtKB/Swiss-Prot O15143: Variant p.Ala105Val

Actin-related protein 2/3 complex subunit 1B
Gene: ARPC1B
Variant information

Variant position:  105
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  Unclassified
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 Alanine (A) to Valine (V) at position 105 (A105V, p.Ala105Val).
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 small size and hydrophobic (A) to medium size and hydrophobic (V)
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

Involvement in disease:  Platelet abnormalities with eosinophilia and immune-mediated inflammatory disease (PLTEID) [MIM:617718]: An autosomal recessive disorder characterized by platelet abnormalities, vasculitis, eosinophilia, and predisposition to inflammatory diseases. {ECO:0000269|PubMed:28368018}. 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 PLTEID; unknown pathological significance.
Any additional useful information about the variant.



Sequence information

Variant position:  105
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  372
The length of the canonical sequence.

Location on the sequence:   TWKPTLVILRINRAARCVRW  A PNENKFAVGSGSRVISICYF
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                         TWKPTLVILRINRAARCVRWAPNENKFAVGSGSRVISICYF

Mouse                         TWKPTLVILRINRAARCVRWAPNENKFAVGSGSRVISICYF

Rat                           TWKPTLVILRINRAARCVRWAPNENKFAVGSGSRVISICYF

Bovine                        TWKPTLVILRINRAARCVRWAPNEKKFAVGSGSRVISICYF

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 – 372 Actin-related protein 2/3 complex subunit 1B
Repeat 94 – 135 WD 3


Literature citations

Loss of the Arp2/3 complex component ARPC1B causes platelet abnormalities and predisposes to inflammatory disease.
Kahr W.H.; Pluthero F.G.; Elkadri A.; Warner N.; Drobac M.; Chen C.H.; Lo R.W.; Li L.; Li R.; Li Q.; Thoeni C.; Pan J.; Leung G.; Lara-Corrales I.; Murchie R.; Cutz E.; Laxer R.M.; Upton J.; Roifman C.M.; Yeung R.S.; Brumell J.H.; Muise A.M.;
Nat. Commun. 8:14816-14816(2017)
Cited for: INVOLVEMENT IN PLTEID; VARIANTS PLTEID VAL-105 AND THR-238;

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.