Cagrilintide(N-terminal) ,The N-terminal fragment of Cagrilintide is a peptide sequence derived from the N-terminal region of the full-length Cagrilintide, a long-acting amylin analogue for obesity and type 2 diabetes. This fragment contains key residues important for interaction with the amylin receptor complex (calcitonin receptor/CTR and RAMPs) and is often synthesized for research into receptor binding, structure-activity relationships, and analogue development. As a segment, it may retain partial receptor activity and is useful for elucidating binding mechanisms and for developing improved therapeutics.
Appearance
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White to off-white solid powder or lyophilized solid
Source
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Synthetically produced by solid-phase peptide synthesis (SPPS)
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Not typically isolated from natural sources
Molecular Weight and Structure
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Molecular weight: Depends on the specific fragment length and sequence; much lower than intact Cagrilintide (full-length: ~3917.9 Da)
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Structure: Corresponds to the amino acid sequence from the N-terminus with a free amino (N-term) and carboxyl (C-term) group
Biological Activity
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May bind the amylin receptor complex (CTR/RAMPs)
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Activity dependent on fragment sequence, length, and post-translational modifications
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Possible effects on gastric emptying, appetite regulation, and glucose metabolism, but likely less potent than full-length Cagrilintide
Purity and Microbial Contamination
| Purity and Microbial Contamination | Specification |
|---|---|
| Purity | ≥95% by HPLC |
| Microbial contamination | Minimal; confirmed by COA |
| Testing | Endotoxin testing (LAL assay), sterility |
Identity and Quality Control
| Identity and Quality Control | Specification |
|---|---|
| Mass Spectrometry (MS) | Confirms molecular weight |
| Amino Acid Analysis | Confirms composition |
| Peptide Sequencing | Confirms correct sequence |
| HPLC | Assesses purity |
| Optical Rotation (if chiral) | Enantiomeric purity verification |
Shelf Life and Storage
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Shelf life: 1–2 years from manufacture; refer to COA
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Store at -20°C or below, inert atmosphere (argon/nitrogen), tightly sealed, dry
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Protect from light and avoid repeated freeze-thaw cycles
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Lyophilized peptides are most stable
Applications
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Receptor binding studies (amylin receptor/CTR/RAMPs)
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Structure-activity relationship (SAR) studies for amylin analogues
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Reference for peptide synthesis and purification
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Pharmacological characterization of N-terminal effects
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Basis for the design of modified amylin analogues
Key Characteristics
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Sequence derived from N-terminus of Cagrilintide
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Interacts with amylin receptor complex
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Synthetic, high-purity, and potentially bioactive
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Useful for understanding Cagrilintide’s mechanism of action
Citation
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Use keywords like “Cagrilintide amylin receptor N-terminal,” “amylin structure-activity relationship,” “amylin analogue N-terminal,” and “Cagrilintide synthesis” on Google Scholar and chemical databases
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Review patents for detailed sequence information
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Consult publications on amylin receptor structure, SAR, and clinical research for Cagrilintide and analogues
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Seek out articles on receptor agonism, peptide drug design, and amylin pharmacology for close analogues and fragments
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Once the exact sequence is known, refine literature searches for studies focusing on that peptide fragment specifically

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