UniProtKB/SwissProt variant VAR

Variant information

Variant position:

1743

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 1743 (T1743I, p.Thr1743Ile).

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 AT; associated with preleukemic T-cell proliferation; decreased phosphorylation of target proteins.

Any additional useful information about the variant.

Other resources:

Links to websites of interest for the variant.

Variant rs587779844 [ dbSNP | Ensembl ]

Sequence information

Variant position:

1743

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

Protein sequence length:

3056

The length of the canonical sequence.

Location on the sequence:

VEDCVKVRSAAVTCLKNILA T KTGHSFWEIYKMTTDPMLAY

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                         VEDCVKVRSAAVTCLKNILATKTGHSFWEIYKMTTDPMLAY

Mouse                         VEDSVKIRSAAATCLKNILATKIGHIFWENYKTSADPMLTY

Pig                           VEDCVKVRSAAVTCLKSILATKTGHGFWEIFKTTADPMLTY

Caenorhabditis elegans        FKICVDFKGKYDKCVINLLGCLKGVNAED------------

Drosophila                    FQFDPKTHEGLVSVAIQVVNSKPGSNIMERYKN--------

Baker's yeast                 VGYSIG-NSESEFCFRDNIMNENKDKV--------------

Fission yeast                 FKYDILLDSFIEDCIRMFFENGNHQELRKFLNFPKDS----

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	2 – 3056	Serine-protein kinase ATM

Literature citations

ATM mutations and phenotypes in ataxia-telangiectasia families in the British Isles: expression of mutant ATM and the risk of leukemia, lymphoma, and breast cancer.
Stankovic T.; Kidd A.M.J.; Sutcliffe A.; McGuire G.M.; Robinson P.; Weber P.; Bedenham T.; Bradwell A.R.; Easton D.F.; Lennox G.G.; Haites N.; Byrd P.J.; Taylor A.M.R.;
Am. J. Hum. Genet. 62:334-345(1998)
Cited for: POSSIBLE INVOLVEMENT IN TALL; VARIANTS AT LEU-292; ASP-768; GLN-1001; ARG-1691; ILE-1743; GLY-2424; 2427-LEU-ARG-2428 DEL; 2546-SER--ILE-2548 DEL; ASP-2554; GLY-2668 AND CYS-2827;

Modeling ATM mutant proteins from missense changes confirms retained kinase activity.
Barone G.; Groom A.; Reiman A.; Srinivasan V.; Byrd P.J.; Taylor A.M.;
Hum. Mutat. 30:1222-1230(2009)
Cited for: FUNCTION; CHARACTERIZATION OF VARIANTS AT LEU-292; PRO-1465; ILE-1743; THR-2274; GLY-2424; 2427-LEU-ARG-2428 DEL; 2546-SER--ILE-2548 DEL; ASP-2554; GLY-2668; CYS-2827; 2855-SER-VAL-2856 DELINS ARG-ILE AND CYS-3008; CHARACTERIZATION OF VARIANTS VAL-546; ARG-1054; ILE-1322; ARG-1691; CYS-1961 AND SER-2765; VARIANT ILE-1322; MUTAGENESIS OF LYS-1807; VAL-1941; TYR-2019; GLU-2039; LEU-2338; SER-2394; LEU-2452; SER-2685; PRO-2699; ASP-2708 AND GLN-2730;

UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q13315: Variant p.Thr1743Ile