L11 Quaternary

fig 4 24a cyclic symmetry if the required rota9on 180

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Unformatted text preview:   Individual subunits can be superimposed on other iden9cal In the vast majority of oligomeric proteins, the protomers are subunits ( arranged. symmetricallybrought into coincidence) •  Rota9onal and/or transla9onal symmetry i.e. the protomers occupy geometrically equivalent positions in the oligomer •  No mirror symmetry •  Protomer: the repea9ng structural unit (which can be a single Compare these two arrangements: subunit...
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