Sandbox GGC7: Difference between revisions

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The structure of IDE is a <scene name='75/752270/Ide_homodimer/1'>homodimer</scene> with two N-terminal domains, which forms the catalytic site and two C-terminal domains that facilitates the substrate binding <ref>DOI 10.1074/jbc.M900068200</ref>. The N-terminal domains are connected to the C-terminal domains via a 28-residue loop that forms a chamber that is shaped like a triangular prism.
The structure of IDE is a <scene name='75/752270/Ide_homodimer/1'>homodimer</scene> with two N-terminal domains, which forms the catalytic site and two C-terminal domains that facilitates the substrate binding <ref>DOI 10.1074/jbc.M900068200</ref>. The N-terminal domains are connected to the C-terminal domains via a 28-residue loop that forms a chamber that is shaped like a triangular prism.
Domain 1 houses the <scene name='75/752270/Ide_monomer/1'>metal binding site</scene> with two histidine's and one glutamine(his 108, his 112 and glu 198), the active site of a glutamine (Glu 111), ATP binding site (Arg 429) and the Zn2+ ion cofactor. Several residues of domains 1 & 4 create a polar area of the triangular cavity, while residues of domains 2 & 3 create a nonpolar region of the cavity.
Domain 1 houses the <scene name='75/752270/Ide_monomer/1'>metal binding site</scene> with two histidine's and one glutamine(his 108, his 112 and glu 198), the <scene name='75/752270/Ide_atp_binding-active_sites/1'>active site</scene> of a glutamine (Glu 111), ATP binding site (Arg 429) and the Zn2+ ion cofactor. Several residues of domains 1 & 4 create a polar area of the triangular cavity, while residues of domains 2 & 3 create a nonpolar region of the cavity.
There are two conformations for the enzyme, open and closed.  In the open conformation, the insulin protein enters the enzyme opening causing a conformational change that allows the enzyme to fully recognize the protein and catalyzes protein degradation.
There are two conformations for the enzyme, open and closed.  In the open conformation, the insulin protein enters the enzyme opening causing a conformational change that allows the enzyme to fully recognize the protein and catalyzes protein degradation.