Sandbox Reserved 1783: Difference between revisions
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=== Mechanism === | === Mechanism === | ||
[[Image: | [[Image:Screenshot_2023-04-10_at_4.18.47_PM.png|400 px|right|thumb|'''Figure 4.''' Bile Salt Uptake Mechanism: Conformational Change.]] | ||
The NTCP protein goes through a conformational change when assisting in the uptake of bile salt into the cell. This is accomplished through the opening of a wide transmembrane pore, creating a transport pathway for bile salts. The mechanism includes two <scene name='95/952711/1_sodium_binding_to_ntcp/1'>sodium</scene> metal ions that allow for residue stabilization when going through the conformational change. Binding of the preS1 region of the HBV/HDV virus blocks any subsequent bile salt uptake. Thus, preS1 binding blocks the conformational change and entry of any salts into the cell. Residues 8-17 of preS1 are critical for NTCP:pres1 binding. Patch 1 and Patch 2 (external) residues interact with residues 8-17 of preS1 to facilitate binding. | The NTCP protein goes through a conformational change when assisting in the uptake of bile salt into the cell. This is accomplished through the opening of a wide transmembrane pore, creating a transport pathway for bile salts. The mechanism includes two <scene name='95/952711/1_sodium_binding_to_ntcp/1'>sodium</scene> metal ions that allow for residue stabilization when going through the conformational change. Binding of the preS1 region of the HBV/HDV virus blocks any subsequent bile salt uptake. Thus, preS1 binding blocks the conformational change and entry of any salts into the cell. Residues 8-17 of preS1 are critical for NTCP:pres1 binding. Patch 1 and Patch 2 (external) residues interact with residues 8-17 of preS1 to facilitate binding. | ||
