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<scene name='95/952717/Shoc2/1'>SHOC2</scene> is a scaffold protein that is composed of 20 leucine-rich repeat domains that form a solenoid structure. The leucine rich region forms a concave hydrophobic core which is necessary for binding with PP1C and MRAS. SHOC2 is the crucial mediator for SHOC2-PP1C-MRAS complex formation.
<scene name='95/952717/Shoc2/1'>SHOC2</scene> is a scaffold protein that is composed of 20 leucine-rich repeat domains that form a solenoid structure. The leucine rich region forms a concave hydrophobic core which is necessary for binding with PP1C and MRAS. SHOC2 is the crucial mediator for SHOC2-PP1C-MRAS complex formation.
==PP1C==
==PP1C==
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<scene name='95/952717/Pp1c/1'>PP1C</scene> is a catalytic protein. After forming a ternary complex, the <scene name='95/952717/Pp1c_hydrophobic_patch/1'>hydrophobic active site</scene> on the protein interacts with Raf to act as a phosphatase and dephosphorylate Ser 259. PP1C's active site is adjacent to a hydrophobic patch. It's theorized that the hydrophobic patch binds to the C-terminal of N-terminal phosphoserine of RAF, the target for dephosphorylation. PP1C can act as a phosphatase in the absence of SHOC2 but PP1C lasks intrinsic substrate selectively. So SMP complex formation is necessary for PP1C specificity to RAF.
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<scene name='95/952717/Pp1c/1'>PP1C</scene> is a catalytic protein. After forming a ternary complex, the hydrophobic active site on the protein interacts with Raf to act as a phosphatase and dephosphorylate Ser 259. PP1C's active site is adjacent to a hydrophobic patch. It's theorized that the hydrophobic patch binds to the C-terminal of N-terminal phosphoserine of RAF, the target for dephosphorylation. PP1C can act as a phosphatase in the absence of SHOC2 but PP1C lasks intrinsic substrate selectively. So SMP complex formation is necessary for PP1C specificity to RAF.
[[Image:ActiveSiteProto.png|500 px|thumb|'''Figure 2:'''Active site of PP1C on SMP.</div></font>]]
[[Image:ActiveSiteProto.png|500 px|thumb|'''Figure 2:'''Active site of PP1C on SMP.</div></font>]]
==MRAS==
==MRAS==

Revision as of 16:24, 7 April 2023

SHOC2-PP1C-MRAS (PDB entry 7upi)

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