In darkness, the heterotrimeric G protein transducin (Gt) is...

created [InstanceEdit:2530465] Jassal, Bijay, 2012-10-17
dbId 2530480
displayName In darkness, the heterotrimeric G protein transducin (Gt) is...
modified [InstanceEdit:3262437] Jassal, Bijay, 2013-04-10
schemaClass Summation
text In darkness, the heterotrimeric G protein transducin (Gt) is attached to the disk membrane surface with a GDP bound to it and is inactive. Photoexcited rhodopsin (MII) binds Gt enabling the latter to release GDP. GTP, which is present at a high concentration within the outer segment, then takes its place (Bennett et al. 1982, Emeis et al. 1982, Fung & Stryer 1980, Fung et al. 1981).
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