Moderate hearing loss associated with a novel KCNQ4 non-truncating mutation located near the N-terminus of the pore helix

Takahisa Watabe, Tatsuo Matsunaga, Kazunori Namba, Hideki Mutai, Yasuhiro Inoue, Kaoru Ogawa

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Genetic mutation is one of the causative factors for idiopathic progressive hearing loss. A patient with late-onset, moderate, and high-frequency hearing loss was found to have a novel, heterozygous KCNQ4 mutation, c.806_808delCCT, which led to a p.Ser260del located between S5 and the pore helix (PH). Molecular modeling analysis suggested that the p.Ser269del mutation could cause structural distortion and change in the electrostatic surface potential of the KCNQ4 channel protein, which may impede K+ transport. The present study supports the idea that a non-truncating mutation around the N-terminus of PH may be related to moderate hearing loss.

Original languageEnglish
Pages (from-to)475-479
Number of pages5
JournalBiochemical and Biophysical Research Communications
Volume432
Issue number3
DOIs
Publication statusPublished - 2013 Mar 15

Fingerprint

Audition
Hearing Loss
Mutation
Molecular modeling
High-Frequency Hearing Loss
Electrostatics
Static Electricity
Proteins

Keywords

  • Dominant negative effect
  • Haploinsufficiency
  • KCNQ4
  • Molecular modeling
  • Nonsyndromic hearing loss

ASJC Scopus subject areas

  • Biochemistry
  • Biophysics
  • Cell Biology
  • Molecular Biology

Cite this

Moderate hearing loss associated with a novel KCNQ4 non-truncating mutation located near the N-terminus of the pore helix. / Watabe, Takahisa; Matsunaga, Tatsuo; Namba, Kazunori; Mutai, Hideki; Inoue, Yasuhiro; Ogawa, Kaoru.

In: Biochemical and Biophysical Research Communications, Vol. 432, No. 3, 15.03.2013, p. 475-479.

Research output: Contribution to journalArticle

Watabe, Takahisa ; Matsunaga, Tatsuo ; Namba, Kazunori ; Mutai, Hideki ; Inoue, Yasuhiro ; Ogawa, Kaoru. / Moderate hearing loss associated with a novel KCNQ4 non-truncating mutation located near the N-terminus of the pore helix. In: Biochemical and Biophysical Research Communications. 2013 ; Vol. 432, No. 3. pp. 475-479.
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