K+/Cl- Cotransporter 2

Supporting information

K+/Cl- cotransporter 2 (KCC2, SLC12A5) is a neuron specific membrane protein that is responsible for the maintenance of the low intracellular Cl- concentration in adult neurons. It is one of four members of the solute carrier 12 (SLC12) family of electroneutral cation-chloride cotransporters and is expressed in most mature mammalian central neurons. KCC2 maintains the intracellular Cl- concentration by using energy from the electrochemical K+ gradient across the plasma membrane to drive Cl- efflux from the cell.

KCC2 has a key role in GABAA and glycine signaling, since low intracellular Cl- concentrations are necessary for the generation of inhibitory post-synaptic potentials (IPSPs) by GABAA and glycine receptors. Modulation of KCC2 function may therefore impact the effectiveness of GABA signaling. Indeed, prolonged intense neuronal firing, as seen in pathological conditions such as epilepsy, spinal cord injury or neuropathic pain, results in down-regulation of KCC2 and affects GABA signaling. Activation of KCC2 has been shown to alleviate pain in a rat model.

To view external sources of pharmacological information for K+/Cl- Cotransporter 2, please click here: IUPHAR Receptor Code

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Gene Species Gene Symbol Gene Accession No. Protein Accession No.
SLC12A5 Human SLC12A5 NM_020708 Q9H2X9
Mouse Slc12a5 NM_020333 Q91V14
Rat Slc12a5 NM_134363 NP_599190

Literature for K+/Cl- Cotransporter 2

GABA Receptors Scientific Review

A review of the structure and function of GABA receptor subtypes and the ligands that act upon them. Compounds available from Tocris are listed.

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GABA Review

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GABA Receptors Scientific Review

Our GABA review gives an overview of the structure and function of the GABA receptors, as well as highlighting pharmacological ligands for their study. Request copy or view PDF today.

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