Sandbox 666: Difference between revisions

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EcoRI is a homodimer, so it has two identical subunits (<scene name='Sandbox_666/Monomer_structure/3'>monomer strucure shown here</scene>) of 31 kDa, but it possible to have homotetramers at high concentrations..  The constitutive monomers are 276 amino acids long. EcoRI and all the other restriction enzymes show a common structural core which is a  α/β domain. The constitutive subunits of EcoRI are organized into a single α/β domain (five stranded β sheet which are surrounded on by α helices). Four of these five β strands are parallel whereas the fourth (β4) is in an anti-parallel orientation to the others.
EcoRI is a homodimer, so it has two identical subunits (<scene name='Sandbox_666/Monomer_structure/3'>monomer strucure shown here</scene>) of 31 kDa, but it possible to have homotetramers at high concentrations..  The constitutive monomers are 276 amino acids long. EcoRI and all the other restriction enzymes show a common structural core which is a  α/β domain. The constitutive subunits of EcoRI are organized into a single α/β domain (<scene name='Sandbox_666/B_sheet/1'>five stranded β</scene> sheet which are surrounded on by <scene name='Sandbox_666/Helix/1'>α helices</scene> ). Four of these five β strands are parallel whereas the fourth (β4) is in an anti-parallel orientation to the others.