UniProtKB/SwissProt variant VAR

Variant information

Variant position:

127

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 127 (A127V, p.Ala127Val).

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

Variant description:

Found in a patient with Rett syndrome-like phenotype; unknown pathological significance.

Any additional useful information about the variant.

Other resources:

Links to websites of interest for the variant.

Variant rs150617429 [ dbSNP | Ensembl ]

Sequence information

Variant position:

127

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

Protein sequence length:

351

The length of the canonical sequence.

Location on the sequence:

ESLHKLLTSGGLNEDFSFHY A QLQSNIIEAINELLVELEGT

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                         ESLHKLLTSGGLNE----------------------DFSFHYA-----------QLQSNIIEAINELLVELEGT

Mouse                         ESLHKLLTSGGLSE----------------------DFSFH

Rat                           ESLHKLLTSGGLSE----------------------DFSFH

Bovine                        ESLHKLLTSGGLSE----------------------DFRSH

Rabbit                        ESLHKLLTSGGLSE----------------------DFSFH

Slime mold                    NNNNNINSSSNINKNNKYSNVMLQDDPID--DQEDIDFTET

Baker's yeast                 DTMSTTVTSTSVAE-------PLISSMFNLLQKPEQPHQNR

Fission yeast                 SQKRDIPSNEKLVQSHEPVSVQMYSSMLNLLGRPTLESPTH

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 – 351	Translation initiation factor eIF-2B subunit beta
Helix	127 – 145

Literature citations

Identification of novel genetic causes of Rett syndrome-like phenotypes.
Lopes F.; Barbosa M.; Ameur A.; Soares G.; de Sa J.; Dias A.I.; Oliveira G.; Cabral P.; Temudo T.; Calado E.; Cruz I.F.; Vieira J.P.; Oliveira R.; Esteves S.; Sauer S.; Jonasson I.; Syvaenen A.C.; Gyllensten U.; Pinto D.; Maciel P.;
J. Med. Genet. 53:190-199(2016)
Cited for: VARIANT VAL-127;

UniProtKB/Swiss-Prot P49770: Variant p.Ala127Val