Structure | Function | Kinetics | Location |
---|---|---|---|
What is 8?
The number of transmembrane domains in WT EAATs
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What is anion channel function?
This function of EAATs is stoichiometrically uncoupled from glutamate transport
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What is glutamate?
Anion transport increases when this molecule is present
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What is EAAT5?
This EAAT was thought to be uniquely localized to the retina
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What is Gltph?
This bacterial analogue has ~40% homology with human EAATs
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What are PTSD, depression, schizophrenia, bipolar disorder?
2 disorders implicated in EAAT dysregulation
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What is EAAT2?
This EAAT is responsible for ~90% of glutamate clearance in the brain
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What are EAAT3 and 4?
These two EAAT isoforms are primarily present in neurons
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What is trimeric?
The quaternary structure of EAATs
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What is amphetamine?
This drug causes EAAT3 internalization in dopamine neurons
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What is 3 Na, H, K?
These ions are co-transported with glutamate
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What are Purkinje cells (cerebellum)?
Where EAAT4 is primarily found
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What is C-terminus?
This functional region is implicated in anion channel gating
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What is EAAT1b?
This splice variant results in negative regulation of full length EAAT function
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What is high affinity, low turnover?
This kinetic trait supports the hypothesis of anion transport as a primary function of EAATs 4 and 5
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What is EAAT1?
This EAAT may be upregulated neuronally where astroglia are absent
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What is SLC1A2?
This gene encodes EAAT2
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What are TM3, 6, and 8?
These three transmembrane domains are part of the functional transport domain in EAATs
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What are unique C-terminal domains in EAAT2 splice variants?
Although exact function is unclear, this functional domain may related to transporter retention time within the plasma membrane
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What is the post synaptic membrane?
Specifically, EAATs 3 and 4 are more highly concentrated in this area of the synapse
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