UniProtKB/SwissProt variant VAR

Variant information

Variant position:

338

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

Type of variant:

LP/P [Disclaimer]

The variants are classified into three categories: LP/P, LB/B and US.

LP/P: likely pathogenic or pathogenic.
LB/B: likely benign or benign.
US: uncertain significance

Residue change:

From Threonine (T) to Isoleucine (I) at position 338 (T338I, p.Thr338Ile).

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 (T) to medium size and hydrophobic (I)

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

Variant description:

In CF; mild; isolated hypotonic dehydration.

Any additional useful information about the variant.

Other resources:

Links to websites of interest for the variant.

Variant rs77409459 [ dbSNP | Ensembl ]

Sequence information

Variant position:

338

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

Protein sequence length:

1480

The length of the canonical sequence.

Location on the sequence:

VFLSVLPYALIKGIILRKIF T TISFCIVLRMAVTRQFPWAV

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                         VFLSVLPYALIKGIILRKIFTTISFCIVLRMAVTRQFPWAV

Gorilla                       VFLSVLPYALIKGIILRKIFTTISFCIVLRMAVTRQFPWAV

Rhesus macaque                VFLSVLPYALIKGIVLRKIFTTISFCIVLRMAVTRQFPWAV

Chimpanzee                    VFLSVLPYALIKGIILRKIFTTISFCIVLRMAVTRQFPWAV

Mouse                         VFLSVLPYTVINGIVLRKIFTTISFCIVLRMSVTRQFPTAV

Rat                           VFLSVLPYTVINGIVLRKIFTTISFCIVLRMSVTRQFPTAV

Pig                           VFLSVLPYALLKGIMLRKIFTTISFCIVLRMAVTRQFPWAV

Bovine                        VFLSVLPYALLKGIILRKIFTTISFCIVLRMAVTRQFPWAV

Rabbit                        VFLSVLPYALTKGIILRKIFTTISFCIVLRMAVTRQFPWAV

Sheep                         VFLSVLPYALLKGIILRKIFTTISFCIVLRMAVTRQFPWAV

Horse                         VFLSVLPYALIKGIVLRRIFTTISFCIVLRMAVTRQFPWAV

Xenopus laevis                VFLSIVPHLLLDGISLRKIFTTISFSIVLRMAVTRQFPWAV

Zebrafish                     IVAAVVPHALSRGINLRRIFTTLSYCMVLRMTVTRQLPGSI

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 – 1480	Cystic fibrosis transmembrane conductance regulator
Topological domain	320 – 339	Extracellular
Domain	81 – 365	ABC transmembrane type-1 1
Helix	333 – 351

Literature citations

A specific cystic fibrosis mutation (T338I) associated with the phenotype of isolated hypotonic dehydration.
Leoni G.B.; Pitzalis S.; Podda R.; Zanda M.; Silvetti M.; Caocci L.; Cao A.; Rosatelli M.C.;
J. Pediatr. 127:281-283(1995)
Cited for: VARIANT CF ILE-338;

Identification of a novel mutation (S13F) in the CFTR gene in a CF patient of Sardinian origin.
Leoni G.B.; Pitzalis S.; Tonelli R.; Cao A.;
Hum. Mutat. 11:337-337(1998)
Cited for: VARIANTS CF PHE-13 AND ILE-338;

UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P13569: Variant p.Thr338Ile