R&D Systems Inc. Tocris Bioscience Boston Biochem


Neuropeptides are defined as peptides that are secreted by neurons and act as intracellular messengers. They were initially identified in 1975 and are the most abundant chemical messengers in the brain.

Neuropeptides Product Areas

Neuropeptides have a known structure of 3-40 amino acids in length and can function as neurotransmitters or as hormones. These signaling molecules mostly act at metabotropic or G-protein coupled receptors and exhibit more diverse effects than neurotransmitters with prolonged action.

Neuropeptides are generally co-released with a primary neurotransmitter; for example the neurotransmitter acetylcholine coexists with Substance P and VIP. They differ to neurotransmitters in that they are produced from larger precursor proteins and are not recycled back into the neuron after secretion.

Neuropeptides are involved in energy expenditure, fluid retention, memory, pain, stress and anxiety and diabetes. Peptoid drugs act to block or mimic the action of neuropeptides and can be used clinically for the treatment of pain, anxiety disorders and drug abuse.

Quick Order

Find multiple products by catalog number

divider line

7-TM Receptor Signaling

Written by T. Kenakin et al

7-TM Poster

'Seven Transmembrane Receptor Signaling' highlights the multiple behaviors of 7-TMs including G-protein-dependent and -independent signaling as well as the concept of collateral efficacy

divider line

New Product Guide


Highlights 140 new products added in the first half of 2014. Request a copy or view PDF today.

divider line

Bio-Techne Events

2014 ASCB/IFCB meeting


December 6 - 10, 2014

Philadelphia, USA

Booth Number: 515