Paper Report for: Sixma_2003_Annu.Rev.Biophys.Biomol.Struct_32_311
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Title: Acetylcholine binding protein (AChBP): a secreted glial protein that provides a high-resolution model for the extracellular domain of pentameric ligand-gated ion channels Sixma TK, Smit AB Ref: Annu Rev Biophys Biomol Struct, 32:311, 2003 : PubMed
Acetylcholine binding protein (AChBP) has recently been identified from molluskan glial cells. Glial cells secrete it into cholinergic synapses, where it plays a role in modulating synaptic transmission. This novel mechanism resembles glia-dependent modulation of glutamate synapses, with several key differences. AChBP is a homolog of the ligand binding domain of the pentameric ligand-gated ion-channels. The crystal structure of AChBP provides the first high-resolution structure for this family of Cys-loop receptors. Nicotinic acetylcholine receptors and related ion-channels such as GABAA, serotonin 5HT3, and glycine can be interpreted in the light of the 2.7 A AChBP structure. The structural template provides critical details of the binding site and helps create models for toxin binding, mutational effects, and molecular gating.
        
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Sixma TK, Smit AB (2003) Acetylcholine binding protein (AChBP): a secreted glial protein that provides a high-resolution model for the extracellular domain of pentameric ligand-gated ion channels Annu Rev Biophys Biomol Struct32: 311-34
Sixma TK, Smit AB (2003) Annu Rev Biophys Biomol Struct32: 311-34