What are the four binding sites on a ribosome?

Ribosomes are composed of two subunits, one small and one large. Four binding sites are located on the ribosome, one for mRNA and three for tRNA. The three tRNA sites are labeled P, A, and E. The P site, called the peptidyl site, binds to the tRNA holding the growing polypeptide chain of amino acids. read more

The four binding sites on ribosomes are: 1. mRNA binding site. Here the mRNA which is supposed to be transcribed bind to the ribosomes. In Bacteria, the 16s rRNA of smaller subunits have conserved sequence which helps the mRNA in binding with the smaller subunits. 2. A-site. Also called amino acyl site. read more

Ribosomes are protein factories. The central dogma of biology is that all DNA is the recipie for proteins (this is not entirely true, but for our purposes here, we can assume this to be true). The DNA is unzipped, and transcribed into RNA by way of Transcriptase - a protein. read more