UniProtKB/SwissProt variant VAR

Variant information

Variant position:

123

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 Aspartate (D) at position 123 (N123D, p.Asn123Asp).

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 medium size and acidic (D)

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:

Keratoderma, palmoplantar, Bothnian type (PPKB) [MIM:600231]: A dermatological disorder characterized by diffuse non-epidermolytic hyperkeratosis of the skin of palms and soles. PPKB is frequently complicated by fungal infections. {ECO:0000269|PubMed:23830519}. 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 PPKB; retains the ability to traffic to the cell membrane.

Any additional useful information about the variant.

Other resources:

Links to websites of interest for the variant.

Variant rs398123057 [ dbSNP | Ensembl ]

Sequence information

Variant position:

123

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

Protein sequence length:

265

The length of the canonical sequence.

Location on the sequence:

GILYGVAPLNARGNLAVNAL N NNTTQGQAMVVELILTFQLA

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                         GILYGVAPLNARGNLAVNALNNNTTQGQAMVVELILTFQLA

Mouse                         GILYWLAPGNARGNLAVNALSNNTTPGKAVVVELILTFQLA

Rat                           GILYWLAPLNARGNLAVNALNNNTTPGKAMVVELILTFQLA

Pig                           GILYGLAPGNARGNLAVNSLNNNTTPGQAVVVEMILTFQLA

Sheep                         AILYGLAPYNARSNLAVNALNNNTTAGQAVVAEMILTFQLA

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.

Type	Positions	Description
Chain	1 – 265	Aquaporin-5
Topological domain	109 – 126	Extracellular
Glycosylation	124 – 124	N-linked (GlcNAc...) asparagine
Glycosylation	125 – 125	N-linked (GlcNAc...) asparagine

Literature citations

Mutations in AQP5, encoding a water-channel protein, cause autosomal-dominant diffuse nonepidermolytic palmoplantar keratoderma.
Blaydon D.C.; Lind L.K.; Plagnol V.; Linton K.J.; Smith F.J.; Wilson N.J.; McLean W.H.; Munro C.S.; South A.P.; Leigh I.M.; O'Toole E.A.; Lundstroem A.; Kelsell D.P.;
Am. J. Hum. Genet. 93:330-335(2013)
Cited for: VARIANTS PPKB GLU-38; SER-45; ASP-123; PHE-177 AND CYS-188; CHARACTERIZATION OF VARIANTS GLU-38; SER-45; ASP-123; PHE-177 AND CYS-188; SUBCELLULAR LOCATION;

UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P55064: Variant p.Asn123Asp