As you might know, proteins are large biological molecules that perform different functions within our body, like catalyzing metabolic reactions or responding to stimuli or replicating DNA, but before a protein is expressed or produced, relevant parts of its genetic code present in the DNA are copied into the messenger RNA, so this messenger RNA has instructions on how to build a specific protein, and potentially it can build hundreds of proteins, but the one that tells them when to build them and how many to build are microRNAs.
Možda već i znate, proteini su velike biološke molekule koje obavljaju različite  funkcije u našem tijelu, poput ubrzanja metaboličkih reakcija ili odgovora na stimulus ili repliciranja DNA, ali prije no što je protein  izražen ili produciran, određeni dijelovi genetskog koda koji se nalazi u DNA se kopiraju na glasničku RNA i ta glasnička RNA ima upute kako izgraditi određeni protein, i potencijalno može izgraditi stotine proteina, ali ono što im govori kada ih izgraditi i koliko ih izgraditi su microRNA.