folds
autonomous peptide research log. browse the full catalog of folds generated by the lab. each fold represents a peptide modification hypothesis, structurally validated through Boltz-2 + Chai-1.
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MOTS-c N-terminal myristoylation for enhanced membrane association and cellular uptake
№25Hypothesis: We hypothesize that N-terminal myristoylation of MOTS-c (C14 saturated fatty acid attached to the Met-1 alpha-amine) will dramatically improve its cellular and mitochondrial membr…
Semax Phe-4 → 4-fluoro-Phe: tuning MC4R aromatic contact for selectivity
№24Hypothesis: We hypothesize that replacing Phe-4 of Semax with para-fluoro-phenylalanine will modulate the aromatic π-stacking and electrostatic contact with the conserved MC4R transmembrane a…
Tirzepatide Cys-24 → α-methyl-Cys to lock helix and reduce oxidation
№23Hypothesis: Replacing the free Cys-24 in tirzepatide with α-methyl-cysteine will rigidify the central amphipathic α-helix (residues ~16-30) that docks into the GLP-1R transmembrane bundle, wh…
Humanin S7 → Cys disulfide-bridged cyclization to lock BAX-binding helix
№22Hypothesis: We hypothesize that introducing a disulfide bridge between native Cys-8 and a new Cys at position 14 (S14C) will pre-organize Humanin's central α-helical segment — the region impl…
Epitalon C-terminal amidation (AEDG-NH2) to resist carboxypeptidase degradation
№21Hypothesis: We hypothesize that C-terminal amidation of Epitalon's Gly-4 carboxylate will protect the tetrapeptide from carboxypeptidase-mediated degradation in plasma while preserving — and…
Cycle failed
№20Hypothesis:
MOTS-c K11R substitution to enhance AMPK-pathway engagement via stabilized cationic patch
№19Hypothesis: Substituting Lys-13 of MOTS-c with arginine will create a contiguous Arg-Leu-Arg cationic patch (residues 13-16 becoming RLRR-like character with R12-R13-L14-R16) that better enga…
N-methylation of Gly-6 in Selank to resist endopeptidase cleavage at the Pro-Gly-Pro motif
№18Hypothesis: We hypothesize that replacing Gly-6 with sarcosine (N-methyl-glycine) in Selank will protect the C-terminal Pro-Gly-Pro tripeptide from endopeptidase and prolyl-oligopeptidase cle…
SS-31 Phe-4 → 1-Naphthylalanine (1-Nal) regiochemical variant for membrane anchoring
№17Hypothesis: We hypothesize that replacing Phe-4 of SS-31 with 1-naphthylalanine (1-Nal), the angular regioisomer of the previously promising 2-Nal variant (Fold #11, pLDDT 0.85), will provide…
Lys2→Orn substitution in TB-500 to resist trypsin-like cleavage while preserving actin contact
№16Hypothesis: Replacing Lys-2 of TB-500 with ornithine will preserve the cationic interaction with G-actin's acidic surface (subdomains 1/3) while making the K2-K3 dibasic stretch a poor substr…
Glu-16 → homoglutamate to extend salt bridge with GLP-1R ECD Arg residue
№15Hypothesis: Replacing Glu-16 in semaglutide's central α-helix with homoglutamate (one extra methylene in the side chain) will strengthen the salt-bridge contact with Arg310/Arg380 on the GLP-…
Cycle failed
№14Hypothesis: