Positioning of ribosomes on a messenger RNA. The 5' cap is to the left and the poly(A) tail is to the right. The red symbols depict non-random accumulation of ribosomes at an uORF, the initiation codon, a site of ribosome pausing within the coding sequence (CDS), and at termination. The green symbols represent freely translating ribosomes at random sites along the coding sequence.
Morris Genome Biology 2009 10:215 doi:10.1186/gb-2009-10-4-215