Polycistronic: Difference between revisions
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Polycistronic mRNA is the term | Polycistronic [[mRNA|mRNA]] is the term given to a [[molecule|molecule]] that comprises coding sequences for several different [[polypeptide|polypeptide]] chains. A [[cistron|cistron]] is a [[nucleotide|nucleotide]] sequence, which contains coding sequences for one polypeptide chain only. In addition, in polycistronic [[mRNA|mRNA]], each region that contains a sequence for a different polypeptide is preceded by a [[ribosome|ribosome]] binding site, and also an AUG [[start codon|start codon]]. Often, the different coding sequences in a polycistronic molecule encode for the different proteins that occur in metabolic pathways.<br> | ||
Latest revision as of 20:48, 24 October 2012
Polycistronic mRNA is the term given to a molecule that comprises coding sequences for several different polypeptide chains. A cistron is a nucleotide sequence, which contains coding sequences for one polypeptide chain only. In addition, in polycistronic mRNA, each region that contains a sequence for a different polypeptide is preceded by a ribosome binding site, and also an AUG start codon. Often, the different coding sequences in a polycistronic molecule encode for the different proteins that occur in metabolic pathways.