Credit Shannon Stapleton/Reuters. 1  The ADT Corporation, which provides home and business security systems for 6.5 million customers, is being acquired by the private equity firm Apollo Global Management for $6.9 billion in the largest leveraged buyout so far this year.
A large ribosomal subunit bonds to the initiation complex. The codon adjacent to the initiation codon bonds to its complementary anticodon, which is part of a free tRNA. The two amino acids still attached to their tRNAs align. With the help of rRNA, amino acids form peptide bonds. Then, the first tRNA is released.
This is shown in this diagram of a molecule of the enzyme trypsin, with a short length of protein being digested in its active site. The amino acids around the active site attach to the substrate molecule and hold it in position while the reaction takes place. This makes the enzyme specific for one reaction only, as other molecules won't fit into the active site â their shape is wrong. Many enzymes need cofactors (or coenzymes) to work properly.