Peptide Classification
How research peptides are grouped — by structure, origin and receptor target — the cluster tying together peptide chemistry and receptor biology.

Peptides can be classified by structure, origin and the receptors they target.
Analogues resemble a natural peptide; secretagogues act on secretagogue receptors.
Classification helps organise how research compounds relate to one another.
Why classify peptides?
Classifying peptides helps researchers organise a large and growing field. Grouping compounds by structure, origin or receptor target makes it easier to compare them and understand their relationships.
Common classes
Analogues are designed to resemble a naturally occurring peptide, such as alpha-MSH analogues. Secretagogues act on secretagogue receptors. Multi-receptor agonists engage more than one receptor at once, as with triple agonists.
Frequently asked questions
How are peptides classified?+
Commonly by structure, origin and receptor target — for example analogues, secretagogues and multi-receptor agonists.
For laboratory research use only. Not for human or animal consumption.
Continue learning
Peptide Chemistry Basics
Peptides are short chains of amino acids whose sequence defines their structure and binding behaviour.
Receptor Signalling Explained
Receptor signalling is how cells convert an external molecular binding event into an internal response.
Retatrutide
A triple receptor agonist studied for its simultaneous interaction with the GLP-1, GIP and glucagon receptor pathways.
Ipamorelin
A synthetic pentapeptide and selective GHSR-1a agonist studied within ghrelin receptor and endocrine signalling research.
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