منابع مشابه
Uniporters, symporters and antiporters.
Transporters are a diverse group of membrane proteins that facilitate the movement of water-soluble solutes through the lipid bilayer of biological membranes. The least complex transporters are the uniporters (Kakuda and MacLeod, 1994). They simply facilitate the diffusion of their substrates across membranes and dissipate substrate gradients that arise as the result of other processes. Uniport...
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Neurotransmitter-sodium symporters (NSS), targets for psychostimulants and therapeutic drugs, have a critical role in neurotransmission. Whereas eukaryotic NSS show chloride-dependent transport, bacterial NSS feature Cl(-)-independent substrate transport. Recently we showed that mutation of an acidic residue near one of the sodium ion-binding sites in LeuT of Aquifex aeolicus or Tyt1 of Fusobac...
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متن کاملChloride binding site of neurotransmitter sodium symporters.
Neurotransmitter:sodium symporters (NSSs) play a critical role in signaling by reuptake of neurotransmitters. Eukaryotic NSSs are chloride-dependent, whereas prokaryotic NSS homologs like LeuT are chloride-independent but contain an acidic residue (Glu290 in LeuT) at a site where eukaryotic NSSs have a serine. The LeuT-E290S mutant displays chloride-dependent activity. We show that, in LeuT-E29...
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ژورنال
عنوان ژورنال: Journal of General Physiology
سال: 2017
ISSN: 0022-1295,1540-7748
DOI: 10.1085/jgp.201711922