Proctolin
- UniProt: P67859
The Proctolin (English synonymous ) refers to a five- amino acid neuropeptide consisting of (H -Arg -Tyr- Leu-Pro -Thr- OH), which functions as a neurotransmitter in the insect neuromuscular synapses Proctodealnerven in the area of the rectum.
In addition, proctolin is immunologically detect also in the central nervous system of insects and even spread of vertebrates as well. He is credited a general neurotransmitter function.