MinK-related genes, formation of potassium channels and...

Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives

Reexamination Certificate

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C536S023100, C435S320100, C435S325000, C435S468000, C435S471000, C435S252300, C435S243000, C435S254110, C435S348000, C435S349000, C435S358000, C435S410000, C435S455000

Reexamination Certificate

active

06864364

ABSTRACT:
The present invention is directed to genes and gene products related to Min-K which form ion channels and to a process for diagnosis of ion channel disorders, including long QT syndrome (LQT). For example, KCNE2 forms IKrpotassium channels and is associated with LQT. LQT is diagnosed in accordance with the present invention by analyzing the DNA sequence of KCNE2 of an individual to be tested and comparing the respective DNA sequence to the known DNA sequence of a normal KCNE2 gene. Alternatively, these MinK-related genes of an individual to be tested can be screened for mutations which cause ion channel disorders, including LQT. Prediction of ion channel disorders, including LQT, will enable practitioners to prevent the disorders using existing medical therapy. This invention is further directed to the discovery that the HERG and KCNE2 (also known as MiRP1) proteins coassemble to form a cardiac IKrpotassium channel.

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