Complementation of RNA binding site mutations in MS2 coat protein heterodimers.

Abstract excerpt

The coat protein of bacteriophage MS2 functions as a symmetric dimer to bind an asymmetric RNA hairpin. This implies the existence of two equivalent RNA binding sites related to one another by a 2-fold symmetry axis. In this view the symmetric binding site defined by mutations conferring the repressor-defective phenotype is a composite picture of these two asymmetric sites. In order to determine whether the RNA...

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