Sandbox Reserved 1451: Difference between revisions
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<scene name='77/778331/Rhodopsin_ligand/1'>11-cis retinal</scene> 11-cis retinal is the ligand, a molecule that is derived from vitamin A, is necessary for rhodopsin function. The ligand performs an inverse agonist suppressing activity on the photon receptor and is associated with the protein via protonated Schiff-bases linked to a lysine reside on the seventh domain<ref name="Article3">PMID:21352497</ref>. A negative agonist means the ligand, when present in the binding pocket of the protein, inhibits the receptor activity<ref name="Article5">PMID:12402507</ref>. The isomerization of cis to trans causes the protein complex to relax which allows for binding of transducin and the signal cascade to progress<ref name="Article3">PMID:21352497</ref>. | <scene name='77/778331/Rhodopsin_ligand/1'>11-cis retinal</scene> 11-cis retinal is the ligand, a molecule that is derived from vitamin A, is necessary for rhodopsin function. The ligand performs an inverse agonist suppressing activity on the photon receptor and is associated with the protein via protonated Schiff-bases linked to a lysine reside on the seventh domain<ref name="Article3">PMID:21352497</ref>. A negative agonist means the ligand, when present in the binding pocket of the protein, inhibits the receptor activity<ref name="Article5">PMID:12402507</ref>. The isomerization of cis to trans causes the protein complex to relax which allows for binding of transducin and the signal cascade to progress<ref name="Article3">PMID:21352497</ref>. | ||
{{STRUCTURE_1jfp| PDB=1jfp | SCENE= }}<scene name='77/778331/Rhodopsin_and_ligand/1'>Rhodopsin and Ligand</scene> This is rhodopsin with 11-cis retinal bound. After 11-cis retinal becomes activated and becomes all-trans, rhodopsin undergoes the conformational change to become metarhodopsin I and then metarhodopsin II which is the fully active form of rhodopsin. Metarhodopsin II then associates with the G protein transducin and the signal cascade can continue. | |||