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Regulatory subunit of Kv4/D (Shal)-type voltage-gated rapidly inactivating A-type potassium channels. Regulates channel density, inactivation kinetics and rate of recovery from inactivation in a calcium-dependent and isoform-specific manner. In vitro, modulates KCND1/Kv4.1 and KCND2/Kv4.2 currents. Increases the presence of KCND2 at the cell surface.
Gene References into Functions
This is the first copy number variation association study of the KCNIP1 gene in Chinese population, and these data indicated that KCNIP1 might function as a type 2 diabetes-susceptibility gene whose dysregulation alters insulin production. PMID: 29491224
Study shows that the VAPB-PTPIP51 tethers regulate autophagy and demonstrates that overexpression of VAPB or PTPIP51 to tighten endoplasmic reticulum-mitochondria contacts impairs, whereas small interfering RNA-mediated loss of VAPB or PTPIP51 to loosen contacts stimulates, autophagosome formation. PMID: 28132811
the current study provides evidence that genetic variants of Kv accessory proteins may contribute to the susceptibility of Attention-deficit/hyperactivity disorder. PMID: 29176790
These studies showed that a common copy number variation in KCNIP1 gene is a genetic predictor of atrial fibrillation risk possibly pointing to a functional pathway. PMID: 26831368
KCNIP1 from copy number variations study might function as a type 2 diabetes susceptibility gene whose dysregulation alters insulin production. PMID: 24886904
Protein aggregation due to nsSNP resulting in P56S VABP protein is associated with amyotrophic lateral sclerosis PMID: 24681403
V234I-VAPB induces ubiquitin aggregation followed by cell death; proposed that V234I-VAPB exhibits the characteristics of amyotrophic lateral sclerosis in spite of not having the typical aggregation property of different mutations in various neurodegenerative diseases PMID: 24792378
our findings suggest that KChIP1 interacts with Kv4.3 in interneurons at the stratum lacunosum-moleculare/radiatum junction PMID: 21129448
X-ray crystallographic and small-angle X-ray scattering data that show that the KChIP1-Kv4.3 N-terminal cytoplasmic domain complex is a cross-shaped octamer bearing two principal interaction sites. PMID: 17057713
EF-hands 3 and 4 of KChIP1 are functionally involved in a specific association with PS on the membrane PMID: 19550036
Isoform 1 and isoform 2 are expressed in brain and kidney. Isoform 1 is also expressed in liver, pancreas, skeletal muscle, small intestine and testis. Isoform 2 is also expressed in lung, pancreas, leukocytes, prostate and thymus.