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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q9H427: Variant p.Thr260Pro

Potassium channel subfamily K member 15
Gene: KCNK15
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Variant information Variant position: help 260 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help 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: help From Threonine (T) to Proline (P) at position 260 (T260P, p.Thr260Pro). 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: help Change from medium size and polar (T) to medium size and hydrophobic (P) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help -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

Polymorphism: help Three alleles are known: TASK-5A, TASK-5B and TASK-5C. The sequence shown is that of allele TASK-5B. Additional information on the polymorphism described.
Variant description: help In allele TASK-5A and allele TASK-5C. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 260 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 330 The length of the canonical sequence.
Location on the sequence: help NLVVLRFLVASADWPERAAR T PSPRPPGAPESRGLWLPRRP 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: help The multiple alignment of the region surrounding the variant against various orthologous sequences.
Human                         NLVVLRFLVASADWPERAA-RTPSPRPPGAPESRGLWLPRRP

Rat                           NLVVLRFL-ASAEAPERAALRRASVFRRGAPESR-------

Sequence annotation in neighborhood: help 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 – 330 Potassium channel subfamily K member 15
Topological domain 244 – 330 Cytoplasmic
Region 256 – 276 Disordered



Literature citations
KT3.2 and KT3.3, two novel human two-pore K(+) channels closely related to TASK-1.
Vega-Saenz de Miera E.; Lau D.H.P.; Zhadina M.; Pountney D.; Coetzee W.A.; Rudy B.;
J. Neurophysiol. 86:130-142(2001)
Cited for: NUCLEOTIDE SEQUENCE [MRNA]; VARIANTS GLY-95; PRO-260 AND PRO-323; Expression pattern in brain of TASK-1, TASK-3, and a tandem pore domain K(+) channel subunit, TASK-5, associated with the central auditory nervous system.
Karschin C.; Wischmeyer E.; Preisig-Mueller R.; Rajan S.; Derst C.; Grzeschik K.-H.; Daut J.; Karschin A.;
Mol. Cell. Neurosci. 18:632-648(2001)
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA / MRNA]; POLYMORPHISM; VARIANTS GLY-95; PRO-260; HIS-261 AND PRO-323; MUTAGENESIS OF ARG-138; 141-LEU--CYS-145; TRP-151 AND CYS-153; TASK-5, a novel member of the tandem pore K+ channel family.
Ashmole I.; Goodwin P.A.; Stanfield P.R.;
Pflugers Arch. 442:828-833(2001)
Cited for: NUCLEOTIDE SEQUENCE [MRNA]; VARIANTS GLY-95; PRO-260 AND PRO-323; TISSUE SPECIFICITY;
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.