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UniProtKB/Swiss-Prot P15382: Variant p.Gly52Ala

Potassium voltage-gated channel subfamily E member 1
Gene: KCNE1
Variant information

Variant position:  52
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  LB/B
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 Glycine (G) to Alanine (A) at position 52 (G52A, p.Gly52Ala).
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 glycine (G) to small size and hydrophobic (A)
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

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



Sequence information

Variant position:  52
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  129
The length of the canonical sequence.

Location on the sequence:   RRSPRSSDGKLEALYVLMVL  G FFGFFTLGIMLSYIRSKKLE
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                         RRSPRSSDGKLEALYVLMVLGFFGFFTLGIMLSYIRSKKLE

Mouse                         RKSQLRDDSKLEALYILMVLGFFGFFTLGIMLSYIRSKKLE

Rat                           RRSQLRDDSKLEALYILMVLGFFGFFTLGIMLSYIRSKKLE

Pig                           RRSQLRDDSKLEALYILMVLGFFGFFTLGIMLSYIRSKKLE

Rabbit                        RRGPLGDDGQMEALYILMVLGFFGFFTLGIMLSYIRSQKLE

Cat                           RRSPGGDDSQLEALYILMVLGFFGFFTLGIMLSYIRSKKLE

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 1 – 129 Potassium voltage-gated channel subfamily E member 1
Transmembrane 44 – 66 Helical
Mutagenesis 32 – 32 R -> D. Increase in inhibition of the complex KCNQ1-KCNE1 by the scolopendra toxin SSD609.
Mutagenesis 69 – 69 K -> H. Lowers current 2-fold and leads to faster deactivation of KCNQ1/KCNE1 channel.
Helix 46 – 71


Literature citations

No reference for the current variant in UniProtKB/Swiss-Prot.

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.