Structure Modifications
Modify existing peptide structures: Fill, Cap, or Mutate
Back to PepFun HomePeptide Filling
Requires Modeller: Filling uses homology modelling.
Install Modeller with a free academic license from
salilab.org.
About Filling
Add flanking amino acids to extend your peptide structure using homology modeling.
Example:
Template:
Model:
AKAFIAWLVRGModel:
LKAKAFIAWLVRGKL
Adds L to N-terminus and KL to C-terminus
Peptide Capping
About Capping
Protect peptide termini by adding capping groups.
Capping Groups:
- ACE — Acetyl (N-term)
- NME — N-methylamide (C-term)
Benefits:
- Improved stability
- Protease resistance
- Mimic natural peptides
Peptide Mutation
About Mutation
Replace a natural amino acid with a non-natural analog.
Common Mutations:
- Met → Nle — Oxidation resistance
- Gly → Aib — Helix stabilization
- Lys → Orn — Charge modulation
Available NNAAs:
AIB
SAR
NLE
ORN
NVA