KCNN3 gene

potassium calcium-activated channel subfamily N member 3

The information on this page was automatically extracted from online scientific databases.

From NCBI Gene:

Action potentials in vertebrate neurons are followed by an afterhyperpolarization (AHP) that may persist for several seconds and may have profound consequences for the firing pattern of the neuron. Each component of the AHP is kinetically distinct and is mediated by different calcium-activated potassium channels. This gene belongs to the KCNN family of potassium channels. It encodes an integral membrane protein that forms a voltage-independent calcium-activated channel, which is thought to regulate neuronal excitability by contributing to the slow component of synaptic AHP. This gene contains two CAG repeat regions in the coding sequence. It was thought that expansion of one or both of these repeats could lead to an increased susceptibility to schizophrenia or bipolar disorder, but studies indicate that this is probably not the case. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Feb 2011]

From UniProt:

Forms a voltage-independent potassium channel activated by intracellular calcium (PubMed:31155282). Activation is followed by membrane hyperpolarization. Thought to regulate neuronal excitability by contributing to the slow component of synaptic afterhyperpolarization. The channel is blocked by apamin.

From NCBI Gene:

  • ZIMMERMANN-LABAND SYNDROME 3

From UniProt:

Zimmermann-Laband syndrome 3 (ZLS3): A form of Zimmermann-Laband syndrome, a rare developmental disorder characterized by facial dysmorphism with bulbous nose and thick floppy ears, gingival enlargement, hypoplasia or aplasia of terminal phalanges and nails, hypertrichosis, joint hyperextensibility, and hepatosplenomegaly. Some patients manifest intellectual disability with or without epilepsy. ZLS3 inheritance is autosomal dominant. [MIM:618658]

Cytogenetic Location: 1q21.3, which is the long (q) arm of chromosome 1 at position 21.3

Molecular Location: base pairs 154,697,455 to 154,870,281 on chromosome 1 (Homo sapiens Updated Annotation Release 109.20200522, GRCh38.p13) (NCBI)

Cytogenetic Location: 1q21.3, which is the long (q) arm of chromosome 1 at position 21.3
  • hSK3
  • KCa2.3
  • SK3
  • SKCA3
  • ZLS3