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UniProtKB/Swiss-Prot P15382: Variant p.Ser38Gly

Potassium voltage-gated channel subfamily E member 1
Gene: KCNE1
Chromosomal location: 21q22.1
Variant information

Variant position:  38
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 Glycine (G) at position 38 (S38G, p.Ser38Gly).
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 glycine (G)
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:  38
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:   QETVQQGGNMSGLARRSPRS  S DGKLEALYVLMVLGFFGFFT
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                         QETVQQGGNMSG-LARRSPRSSDGKLEALYVLMVLGFFGFFT

Mouse                         QETAEQGGNVSG-LARKSQLRDDSKLEALYILMVLGFFGFF

Rat                           QETDEPGGNMSADLARRSQLRDDSKLEALYILMVLGFFGFF

Pig                           QETDEPGGNMSADLARRSQLRDDSKLEALYILMVLGFFGFF

Rabbit                        EETAHLQGSSATSLARRGPLGDDGQMEALYILMVLGFFGFF

Cat                           QGTAHQGGNTSG-LARRSPGGDDSQLEALYILMVLGFFGFF

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
Site 19 – 19 Interacts with the scolopendra toxin SSD609
Glycosylation 26 – 26 N-linked (GlcNAc...) asparagine
Mutagenesis 19 – 19 E -> K. Loss inhibition of the complex KCNQ1-KCNE1 by the scolopendra toxin SSD609.
Mutagenesis 28 – 28 S -> T. No measurable effect on assembly with KCNQ1 or cell surface expression of the KCNE1/KCNQ1 channel complex, and loss of glycosylation at N-5; when associated with Q-5. 50% reduction of cell surface expression of the KCNE1/KCNQ1 channel complex, and loss of glycosylation at N-5 and T-7; when associated with A-7.
Mutagenesis 32 – 32 R -> D. Increase in inhibition of the complex KCNQ1-KCNE1 by the scolopendra toxin SSD609.


Literature citations

Polymorphism of the gene encoding a human minimal potassium ion channel (minK).
Lai L.P.; Deng C.L.; Moss A.J.; Kass R.S.; Liang C.S.;
Gene 151:339-340(1994)
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA]; VARIANT GLY-38;

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]; VARIANTS HIS-32 AND GLY-38;

The contribution of genes involved in potassium-recycling in the inner ear to noise-induced hearing loss.
Van Laer L.; Carlsson P.-I.; Ottschytsch N.; Bondeson M.-L.; Konings A.; Vandevelde A.; Dieltjens N.; Fransen E.; Snyders D.; Borg E.; Raes A.; Van Camp G.;
Hum. Mutat. 27:786-795(2006)
Cited for: VARIANTS GLY-38 AND ASN-85; CHARACTERIZATION OF VARIANT ASN-85;

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.