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UniProtKB/Swiss-Prot P78334: Variant p.Ser102Ala

Gamma-aminobutyric acid receptor subunit epsilon
Gene: GABRE
Variant information

Variant position:  102
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  Polymorphism
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 Serine (S) to Alanine (A) at position 102 (S102A, p.Ser102Ala).
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 polar (S) to small size and hydrophobic (A)
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

Other resources:  
Links to websites of interest for the variant.



Sequence information

Variant position:  102
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  506
The length of the canonical sequence.

Location on the sequence:   YDHKLRPGIGEKPTVVTVEI  S VNSLGPLSILDMEYTIDIIF
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                         YDHKLRPGIGEKPTVVTVEISVNSLGPLSILDMEYTIDIIF

Rat                           YDHKLRPSIGEKPTVVTVKVFVNSLGPISILDMEYSIDIIF

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.

TypePositionsDescription
Chain 23 – 506 Gamma-aminobutyric acid receptor subunit epsilon
Topological domain 23 – 253 Extracellular


Literature citations

Insensitivity to anaesthetic agents conferred by a class of GABA(A) receptor subunit.
Davies P.A.; Hanna M.C.; Hales T.G.; Kirkness E.F.;
Nature 385:820-823(1997)
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1); VARIANT ALA-102;

An mRNA encoding a putative GABA-gated chloride channel is expressed in the human cardiac conduction system.
Garret M.; Bascles L.; Boue-Grabot E.; Sartor P.; Charron G.; Bloch B.; Margolskee R.F.;
J. Neurochem. 68:1382-1389(1997)
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1); VARIANT ALA-102;

The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC).
The MGC Project Team;
Genome Res. 14:2121-2127(2004)
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 2); VARIANTS PHE-9 AND ALA-102;

Disclaimer: Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. They are not in any way intended to be used as a substitute for professional medical advice, diagnostic, treatment or care.