Final answer:
The lysosomal targeting signal is responsible for sorting lysosomal enzymes into vesicles destined for delivery to the lysosome.
Step-by-step explanation:
The signal that sorts lysosomal enzymes into vesicles destined for delivery to the lysosome is called the lysosomal targeting signal. This signal helps to ensure that the enzymes are correctly transported to the lysosome for their proper functioning.
Once the enzymes are synthesized on the rough endoplasmic reticulum, they are packaged into transport vesicles. These vesicles then move to the Golgi apparatus, where they are modified and tagged with the lysosomal targeting signal. The transport vesicles containing the enzymes are then directed to fuse with late endosomes, which eventually mature into lysosomes.
Overall, the lysosomal targeting signal plays a crucial role in the sorting and delivery of lysosomal enzymes to their target organelle, the lysosome.