BIOL 201 Lecture Notes - Lecture 18: Dynamin, Lysosome, Copi

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Small subunit of the rubisco serves the purpose of a regulator, encoded in the nucleus, while the large subunit is the catalytic and encoded by the chloroplast. The small subunit has a precursor with n terminus transit peptides that allows for the entry into the stroma, powered by hsc70 atp hydrolysis, not as a result of the h gradient. The transit peptide is removed, and do not target the proteins to the mitochondria, and vice-versa. The small subunit is associated with cphsc70, the large subunit with hsc60 before assembly. 4 pathways exist for proteins to enter the stroma and several of them have no homologous proteins to bacterium transferring proteins. When the first segment is removed, a signal is exposed, which then associates with srp, allowing for the transfer of the protein into the stroma. Unlike the er, the chloroplast and the mitochondria, the proteins enter in a folded state. These proteins must enter via the nuclear pore basket complexes.

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