Explain riboswitches with the help of their structures.

Riboswitches are regulatory RNA elements typically found in the untranslated regions (UTRs) of mRNAs. They control gene expression by directly binding to small metabolites without the need for proteins. These RNA structures undergo conformational changes upon ligand binding, influencing transcription or translation.

Structure of Riboswitches:

Riboswitches consist of ________ ________ ________ _______ ___ _____ ________ _______ _________ _______ _____ _______.
_____ ______ ________ ______ _____ _____ ______ ________.
_______ ____ ______ ________ _____ ____ ________ ___ _________ _______ ________ _________.
____ _________ ___ ________ _________ ______ __________ __________ ____ _________ __________ __________.
__________ __________ ____ ___ ________ ________ __________.
____ _____ ____ ______ ______ _________ _________ ______.
_____ _________ _________ ______ ____ ____ ___ _______ _________ _____ ____ ________.
_____ _________ __________ ______ ________.
________ ____ ____ _________ ___ __________ _________ __________ ________.
__________ _________ ____ _______ _____ __________ ____ __________ ___ __________ _________ ________.
___ _______ ___ __________ __________ ______ _________ ___ ___ _______ ________.
______ ______ ____ ___ _____ ____ ______ ________.
______ _______ ___ ___ _______ _________ ___.
_________ ___ ___ ___ _____ __________ ________.
__________ ________ ______ _______ ________ ______ _______ _______ ___ ____.
____ ______ _______ ________ ________ ________ _________ ________ _____ ______.
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_______ _____ _______ _____ _________ _______ ______ ______ ___ __________ ______ _________.
__________ __________ ________ _____ __________ ______ ____ _______ ________.
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