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potassium voltage-gated channel, subfamily G, member 2
Kv6.2 is also known as KCNF2. It is a member of subfamily G. This member is a gamma subunit of the voltage-gated potassium channel. The delayed-rectifier type channels containing this subunit may contribute to cardiac action potential repolarization.
Kcng2 : potassium voltage-gated channel, subfamily G, member 2
Kv2.1/Kv6.2 channels display submicromolar sensitivity to the antiarrhythmic drug propafenone. 
Yeast two-hybrid reporter assays indicated that Kv6.2 amino-termini are able to interact specifically with the Kv2.1 amino-terminus. It is proposed that this protein protein interaction underlies Kv2.1/Kv6.2 subunit assembly and the expression of functional heteromultimeric Kv2.1/Kv6.2 channels. 
Kv6.2 Expressed in Heart
Kv6.2 mRNA is preferentially expressed in rat and human myocard. 
Kv6.2 Expressed in Rat Brain
According to the Mus musculus potassium voltage-gated channel, subfamily G, member 2 (Kcng2) mRNA expression as been seen in the visual cortex (http://www.ncbi.nlm.nih.gov/IEB/Research/Acembly/av.cgi?db=mouse&q=Kcng2 )
Rat and human Kv6.2 subunits appear to be unable to form functional Kv channels in a heterologous expression system, but, when coexpressed with Kv2.1 alpha subunits, heteromultimeric Kv channels were formed mediating voltage-activated delayed-rectifier type outward currents. 
Delayed-rectifier type channels containing Kv6.2 subunits may contribute to cardiac action potential repolarization. 
Rat and human Kv6.2 subunits appear to be unable to form functional Kv channels in a heterologous expression system, but, when coexpressed with Kv2.1 alpha subunits, heteromultimeric Kv channels were formed mediating voltage-activated delayed-rectifier type outward currents. Their kinetics and conductance-voltage relationship were different from those mediated by homomultimeric Kv2.1 channels 
Effects of heteromerization with Kv6 subunits on the time course of inactivation of Kv2. 1 channels
Co-expression of Kv6 with Kv2.1 Subunits—Kv6.x and/or Kv2.1 subunits were expressed in CHO-K1 cells and the amplitude and kinetics of the resulting currents were analyzed with the whole cell patch-clamp technique. Expression of Kv6.1, Kv6.3, or Kv6.4 subunits alone did not produce any voltage-dependent K+ current (not illustrated), confirming that these subunits are silent. To test for possible formation of heteromeric Kv6.x/Kv2.1 channels we then co-expressed Kv6.1, Kv6.3, or Kv6.4 subunits with Kv2.1 using an IRES-based expression vector in which the transcription of both channel subunits was under the control of the same promoter. This vector induced the translation of two open reading frames from one mRNA transcript. However, the translation of the second open reading frame (Kv2.1) was about 10-fold lower than that of the first one (Kv6), which minimized the formation of homomeric Kv2.1 channels. The time course of inactivation of the heteromeric channels was much slower than that of homotetrameric Kv2.1 channels 
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Contributors : Rajnish Ranjan, Michael Schartner
To cite : [Editor], [Contributors]. Accessed on [Date] Channelpedia , http://channelpedia.epfl.ch/ionchannels/20