Recombinant Human Potassium voltage-gated channel subfamily D member 2 (KCND2)

1. A mutation, V404M, in the Kv4.2 channel subunit is associated with infant-onset epilepsy and autism. V404M enhances inactivation of channels that have not opened but dramatically impairs inactivation after opening. Authors show that increased side-chain volume is largely responsible for these seemingly paradoxical effects. PMID: 29581270
2. Our results do not support the notion that accessory KChIP2 binding is a prerequisite for dendritic trafficking and functional surface expression of Kv4.2 channels, however, accessory KChIP2 binding may play a potential role in Kv4.2 modulation during intrinsic plasticity processes. PMID: 29385176
3. Ca(2+)/calcineurin (CaN)/nuclear factor of activated T-cells (NFAT) c4 axis is required for neuritin-induced Kv4.2 transcriptional expression and potentiation of IA densities in cerebellum granule neurons. PMID: 27307045
4. closed-state inactivation in Kv4.2 channels is a multistep process PMID: 26745419
5. The study provides the first piece of evidence for the role of H2S in regulating Ito potassium channels and also the specific motif in an ion channel labile for H2S regulation. PMID: 25756524
6. The stoichiometry of the Kv4.2-DPP10 complex was variable depending on the relative expression level of each subunit, with a preference for 4:2 stoichiometry PMID: 26209633
7. The findings of this study suggest that variations in KCND2 genes are associated with both mild and severe persistent breast pain after breast cancer surgery. PMID: 25599232
8. A rare genetic mutation of the KCND2 gene, p.D612N, was identified in a single patient. Co-expression of mutant and wild-type KCND2 with KChIP2 demonstrated a gain-of-function phenotype. PMID: 25214526
9. study identified a de novo variant p.Val404Met in KCND2 in a family with identical twins affected with autism and severe seizures; findings suggest KCND2 is the causal gene for epilepsy in this family and has a role in the etiology of autism PMID: 24501278
10. Subunit counting by single-molecule imaging revealed that the bound number of KChIP4 in each Kv4.2.KChIP4 complex was dependent on the expression level of KChIP4. PMID: 24811166
11. reflected in the immunoblotting data KV4.2 receptors were detected at higher levels of expression in patient with cortical dysplasia with intractable epilepsy. PMID: 25003238
12. KCND2 is expressed in human skin, but has not been associated with aging. PMID: 24037343
13. WT PrP(C), in a DPP6-dependent manner, modulated Kv4.2 channel properties, causing an increase in peak amplitude PMID: 24225951
14. Our results support the hypothesis that KChIPs enhances Kv4.2 functional expression by a 1 : 1 suppression of the N-terminal FERN domain and by producing additional positive regulatory effects on functional channel expression. PMID: 23692269
15. Autoantibodies from patients with encephalitis are specific for DPPX (a subunit of Kv4.2) without reacting to Kv4.2. PMID: 23225603
16. Seizures in Kv4.2 transgenic mice rapidly redistribute K+ channel subunit Kv4.2 to the neuronal surface, implicating a molecular substrate for the increased K+ current. PMID: 22122031
17. KChIP2 differentially regulates total and cell surface Kv4.2 protein expression and Kv4 current densities. PMID: 20709747
18. MiRP3 modulates Kv4.2 current activation, inactivation and recovery from inactivation. MiRP3 shifts the half-maximal voltage for activation and slows time to peak ~ 100%. PMID: 20498229
19. PSD-95 increased the amount of Kv1.4, but not Kv4.2, in lipid rafts. PMID: 14559911
20. Kv4.2 and K+ channel-interacting protein 2 make up a complex of Ito channels PMID: 14623880
21. Data show that KChIP1, KChIP2.1, and KChIP2.2 could form homo- as well as hetero-oligomers, and that this oligomerization did not perturb their interaction with Kv4.2 potassium channel. PMID: 15358149
22. mutations in KCND2 and KCND3 are not a frequent cause of long QT syndrome PMID: 15563876
23. Data show that the Kv4.2 voltage-dependent potassium channel acts as a fast-responding steroid sensor in human granulosa cells. PMID: 15991246
24. Traffic of Kv4.2 is coat protein complex I (COPI)-dependent. PMID: 16260497
25. the C-terminal domain of Kv4.2 plays a critical role in voltage-dependent activation and functional expression that is mediated by direct interaction between the Kv4.2 C terminus and KChIP2 PMID: 16820361
26. Electrophysiological analysis indicates attenuated K+ current density in cells expressing this Kv4.2-N587fsX1 mutant channel, which is consistent with a model of aberrant neuronal excitability characteristic of TLE. PMID: 16934482
27. two Ca2+-dependent posttranslational events regulate the activity of DREAM on Kv4.2 channel function PMID: 17102134
28. Our results further suggest distinct mechanisms for Kv4.2 gating modulation by KChIPs and DPPs. PMID: 17981906
29. biophysical and biochemical methods indicate that I(SA) channels carry four subunits each of Kv4.2 and DPP6. PMID: 18364354
30. rodent and human Abeta are effective in modulating K currents PMID: 18463498
31. An ALA-scanning mutagenesis in the S4-S5 linker region, the initial part of S5, and the distal part of S6, in X. laevis oocytes showed that temporary uncoupling at the interface between V sensor and cytoplasmic gate may underlie closed-state inactivation. PMID: 19171772
32. SAP97 is a major partner for surface expression and CaMKII-dependent regulation of cardiac Kv4.2 and kv4.3 channels. PMID: 19213956
33. the inhibition of maximal amplitude of Kv4.2 channels by arachidonic acid can explain the inhibition of somatodendritic I(A) in hippocampal neurons PMID: 19453640
34. This study indicated that Kv4.2 is expressed in both neuronal and glial cells and its regulation may involve potassium channel interacting proteins, alterations in the subcellular localization of the channel. PMID: 19596445

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HGNC: 6238

OMIM: 605410

KEGG: hsa:3751

STRING: 9606.ENSP00000333496

UniGene: Hs.654739