UniProtKB/Swiss-Prot P18507: Variant p.Pro83Ser

Gamma-aminobutyric acid receptor subunit gamma-2
Gene: GABRG2
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Variant information Variant position:

83 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant:

US 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 Proline (P) to Serine (S) at position 83 (P83S, p.Pro83Ser). 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 hydrophobic (P) to small size and polar (S) 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:

Found in a patient with idiopathic generalized epilepsy; uncertain significance; the currents elicited by mutant receptors are indistinguishable from wild-type; no difference in sensitivity of the mutant receptors to the allosteric regulators zinc and benzodiazepine diazepam compared to wild-type. Any additional useful information about the variant.
Other resources:

Links to websites of interest for the variant.

Variant rs587777365 [ dbSNP | Ensembl ]

Sequence information Variant position:

83 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length:

475 The length of the canonical sequence.
Location on the sequence:

EGDVTVILNNLLEGYDNKLR P DIGVKPTLIHTDMYVNSIGP 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                         EGDVTVILNNLLEGYDNKLRPDIGVKPTLIHTDMYVNSIGP

Mouse                         EGDVTVILNNLLEGYDNKLRPDIGVKPTLIHTDMYVNSIGP

Rat                           EGDVTVILNNLLEGYDNKLRPDIGVKPTLIHTDMYVNSIGP

Bovine                        EGDVTVILNNLLEGYDNKLRPDIGVKPTLIHTDMYVNSIGP

Chicken                       ESDVTLILNGLLEGYDNKLRPDIGVKPTVIHTDMYVNSIGP

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	40 – 475	Gamma-aminobutyric acid receptor subunit gamma-2
Topological domain	40 – 273	Extracellular
Turn	83 – 87

Literature citations
Novel alpha1 and gamma2 GABAA receptor subunit mutations in families with idiopathic generalized epilepsy.
Lachance-Touchette P.; Brown P.; Meloche C.; Kinirons P.; Lapointe L.; Lacasse H.; Lortie A.; Carmant L.; Bedford F.; Bowie D.; Cossette P.;
Eur. J. Neurosci. 34:237-249(2011)
Cited for: VARIANT SER-83; CHARACTERIZATION OF VARIANT SER-83;

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.