UniProtKB/SwissProt variant VAR

Variant information

Variant position:

449

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 Arginine (R) to Histidine (H) at position 449 (R449H, p.Arg449His).

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 large size and basic (R) to medium size and polar (H)

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:

Renal tubular acidosis, distal, autosomal recessive (RTADR) [MIM:602722]: An autosomal recessive disease characterized by reduced ability to acidify urine, variable hyperchloremic hypokalemic metabolic acidosis, nephrocalcinosis, and nephrolithiasis. It is due to functional failure of alpha-intercalated cells of the cortical collecting duct of the distal nephron, where vectorial proton transport is required for urinary acidification. {ECO:0000269|PubMed:10973252, ECO:0000269|PubMed:12414817}. 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 RTADR.

Any additional useful information about the variant.

Other resources:

Links to websites of interest for the variant.

Variant rs1443883930 [ dbSNP | Ensembl ]

Sequence information

Variant position:

449

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

Protein sequence length:

840

The length of the canonical sequence.

Location on the sequence:

ERRLLSQKTDNEIWNTFFHG R YLILLMGIFSIYTGLIYNDC

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                         ERRLLSQKTDNEIWNTFFHGRYLILLMGIFSIYTGLIYNDC

Mouse                         ERHLLAQKSTNEMWNIFFNGRYLILLMGIFSIYTGLIYNDC

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 – 840	V-type proton ATPase 116 kDa subunit a isoform 4
Transmembrane	444 – 473	Helical

Literature citations

Novel ATP6V1B1 and ATP6V0A4 mutations in autosomal recessive distal renal tubular acidosis with new evidence for hearing loss.
Stover E.H.; Borthwick K.J.; Bavalia C.; Eady N.; Fritz D.M.; Rungroj N.; Giersch A.B.S.; Morton C.C.; Axon P.R.; Akil I.; Al-Sabban E.A.; Baguley D.M.; Bianca S.; Bakkaloglu A.; Bircan Z.; Chauveau D.; Clermont M.-J.; Guala A.; Hulton S.A.; Kroes H.; Li Volti G.; Mir S.; Mocan H.; Nayir A.; Ozen S.; Rodriguez Soriano J.; Sanjad S.A.; Tasic V.; Taylor C.M.; Topaloglu R.; Smith A.N.; Karet F.E.;
J. Med. Genet. 39:796-803(2002)
Cited for: TISSUE SPECIFICITY; VARIANTS RTADR ASP-175; LYS-237 DEL; HIS-449 AND GLN-807;

UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q9HBG4: Variant p.Arg449His