Sandbox Reserved 1777: Difference between revisions
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==Active Site== | ==Active Site== | ||
Once all the domains are bound NTpS binds to PP1C in the active site. Once NTpS is bound it becomes dephosphorylated and the complex falls apart. NTpS is dephosphorylated to prevent the active dimeric RAF from inactivating and changing into its monomeric structure. The <scene name='95/952705/Pp1c_active_site/4'>NTpS active site</scene> is surrounded by hydrophobic and acidic regions along with the C-terminus. These regions are located on the surface of PP1C whereas the active site is placed further into the structure. It is thought that these regions help the ligand bind to the active site by making interactions that will lead NTpS into the protein. There is still some uncertainty as to how the substrate selectivity works but these regions could play an essential role in it. Specifically, the pS from NTpS would bind to the hydrophobic region on PP1C<ref name="Liau">PMID:35768504</ref>. | Once all the domains are bound [https://en.wikipedia.org/wiki/Nucleoside_triphosphate NTpS] binds to PP1C in the active site. Once NTpS is bound it becomes dephosphorylated and the complex falls apart. NTpS is dephosphorylated to prevent the active dimeric RAF from inactivating and changing into its monomeric structure. The <scene name='95/952705/Pp1c_active_site/4'>NTpS active site</scene> is surrounded by hydrophobic and acidic regions along with the C-terminus. These regions are located on the surface of PP1C whereas the active site is placed further into the structure. It is thought that these regions help the ligand bind to the active site by making interactions that will lead NTpS into the protein. There is still some uncertainty as to how the substrate selectivity works but these regions could play an essential role in it. Specifically, the pS from NTpS would bind to the hydrophobic region on PP1C<ref name="Liau">PMID:35768504</ref>. | ||
NTpS can bind to the PP1C active site without PP1C also being bound to SHOC2 and MRAS, however the catalytic activity is much slower and the reaction is less efficient. Also for this event to occur NTpS would need to be exposed from its binding site in the inactive RAF complex. A RAS has to bind to RAF to expose the NTpS allowing PP1C and NTpS to bind. | NTpS can bind to the PP1C active site without PP1C also being bound to SHOC2 and MRAS, however the catalytic activity is much slower and the reaction is less efficient. Also for this event to occur NTpS would need to be exposed from its binding site in the inactive RAF complex. A RAS has to bind to RAF to expose the NTpS allowing PP1C and NTpS to bind. | ||