Regulation By Let-7
Let-7 inhibits production of specific proteins by complementary binding to their mRNA transcripts. The HMGA2 mature mRNA transcript contains seven regions complementary or nearly complementary to let-7 in its 3' untranslated region (UTR). Let-7 expression is very low during early human development, which coincides with the greatest transcription of HMGA2. The time-dependent drop in HMGA2 expression is caused by a rise in let-7 expression.
Read more about this topic: HMGA2
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“Nothing can be more real, or concern us more, than our own sentiments of pleasure and uneasiness; and if these be favourable to virtue and unfavourable to vice, no more can be requisite to the regulation of our conduct and behavior.”
—David Hume (1711–1776)