p(HGNC:SLC5A7)
Furthermore, APP also regulates the presynaptic expression and activity of the high affinity choline transporter. PubMed:18650430
CHT1 is mainly found in cholinergic neurons [92-94] and is responsible for supplying choline for the synthesis of ACh PubMed:26813123
Choline that is released by ACh hydrolysis in the synaptic cleft is continuously reuptaken into the presynaptic cholinergic neuron by an active transport system (see Fig. 1) PubMed:26813123
Two choline transporters have been identified in neurons: a ubiquitous, low-affinity, sodium-independent transporter that can only be inhibited by high concentrations of hemicholinium-3 (HC-3) (Ki of about 50 μM), and a highaffinity, sodium-dependent, HC-3-sensitive (Ki of 10-100 nM) choline transporter (CHT1) PubMed:26813123
It is possible that the presence of CHT1 in the membrane of synaptic vesicles and the consequent increase in CHT1 relocation to the plasma membrane following neuronal depolarization could explain why an increase in neuronal firing promotes increased choline reuptake and, thus, ACh synthesis PubMed:26813123
It is possible that the presence of CHT1 in the membrane of synaptic vesicles and the consequent increase in CHT1 relocation to the plasma membrane following neuronal depolarization could explain why an increase in neuronal firing promotes increased choline reuptake and, thus, ACh synthesis PubMed:26813123
BEL Commons is developed and maintained in an academic capacity by Charles Tapley Hoyt and Daniel Domingo-Fernández at the Fraunhofer SCAI Department of Bioinformatics with support from the IMI project, AETIONOMY. It is built on top of PyBEL, an open source project. Please feel free to contact us here to give us feedback or report any issues. Also, see our Publishing Notes and Data Protection information.
If you find BEL Commons useful in your work, please consider citing: Hoyt, C. T., Domingo-Fernández, D., & Hofmann-Apitius, M. (2018). BEL Commons: an environment for exploration and analysis of networks encoded in Biological Expression Language. Database, 2018(3), 1–11.