Cagrilintide: Structural-Source Context and Material Documentation Review

Research use only. It does not provide human or veterinary use, dosing, administration, safety, or outcome guidance.

One source can answer only its stated question

Cagrilintide is a controlled compound name in public databases, including PubChem CID 171397054. That identity record supports a search trail. It does not establish the identity, analytical result, or biological behavior of a separate supplied batch.

For a usable literature record, retain the exact material name used by the authors, the receptor complex or model, the method, the readout, and the stated limitation. These fields make it possible to see which question a source actually answers.

Defined structural source: AMY1R-Gs and CTR-Gs complexes

Gu et al. (2026; PMID 40847076) determined cryo-EM structures of Cagrilintide bound to AMY1R-Gs and CTR-Gs complexes. The authors combined those structures with functional analyses of Gs-signaling activation. Their reported comparison concerns those receptor complexes, their experimental constructs, and the peptide described in that study.

The paper identifies source-specific structural features, including the reported F23 residue, an E14-R17 intramolecular salt bridge, and the C-terminal P37 interaction described by the authors. These observations are useful only in the context of that structural and functional experiment. They are not a substitute for an identity or purity assay on a separately received material.

What the source does not establish

A receptor-complex structure does not specify an external laboratory’s protocol, and it does not demonstrate that another preparation has the same sequence, counterion, conformation, analytical profile, or result. Keep structural, functional, analytical, and batch-document evidence as distinct entries in the research file.

Documentation review for the received material

For the material in hand, retain the label, lot identifier, receipt record, and any supplied COA or SDS. Record only the method and result stated by each document. Chromatographic purity, mass information, and peptide content are different measurements; none can be inferred from the publication or compound database.

This separation makes the record auditable. The paper documents its own test article and receptor systems. Batch documents describe a named received item. Missing fields should remain marked as missing rather than being filled from a related source.