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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Humanin N-terminal myristoylation to enhance mitochondrial/membrane targeting for BAX antagonism
№59Hypothesis: We hypothesize that N-terminal myristoylation of Humanin will enrich the peptide at mitochondrial outer membranes — the site where BAX inserts and oligomerizes during apoptosis in…
Epitalon N-to-C hybrid: fuse AEDG to a TAT-derived cell-penetrating cargo via PEG2 linker
№58Hypothesis: We hypothesize that fusing the AEDG pharmacophore to the cationic TAT(48-57) cell-penetrating peptide via a flexible PEG2 spacer will enable Epitalon to cross the plasma membrane…
DSIP Gly-3/Gly-4 → D-Ala scan to probe GABA-A receptor allosteric binding
№57Hypothesis: We hypothesize that replacing the central Gly-3/Gly-4 hinge of DSIP with two D-Ala residues will rigidify this otherwise floppy nonapeptide into a defined β-turn-like conformation…
SS-31 Phe-4 → Tyr: H-bond donor at C-terminal aromatic for ABCB1 efflux pump engagement
№56Hypothesis: We hypothesize that replacing Phe-4 of SS-31 with Tyr will create a measurable interface with P-glycoprotein (ABCB1), the principal efflux transporter that limits cationic-aromati…
Semax head-to-tail cyclization via Gly-6 D-Lys insertion lactam bridge for protease resistance
№55Hypothesis: We hypothesize that constraining Semax into a macrocyclic backbone via a succinyl-linked side-chain-to-N-terminus lactam (D-Lys inserted before Pro-7) will pre-organize the centra…
Retatrutide i,i+4 lactam bridge Lys17–Asp21 to lock central helix for GLP-1R bias
№54Hypothesis: Installing an i,i+4 Lys17–Asp21 lactam bridge in Retatrutide's central amphipathic helix will pre-organize the bioactive α-helical conformation that docks into GLP-1R's transmembr…
N-terminal hexenoyl lipidation of Sermorelin Tyr-1 for albumin-mediated half-life extension
№53Hypothesis: We hypothesize that capping Sermorelin's N-terminus with a trans-3-hexenoyl group (the same N-acyl modification that converts native GHRH(1-29) into clinically validated Tesamorel…
Semaglutide Aib-2 → α-methyl-Phe-1 N-cap to lock TM helix engagement
№52Hypothesis: Replacing His-1 with α-methyl-L-histidine in semaglutide will rigidify the N-terminal cap of the peptide and bias the φ/ψ angles of the critical receptor-activating residue toward…
TB-500 Thr-4 → 4-fluoro-Phe: hydrophobic anchor for G-actin subdomain 1 cleft
№51Hypothesis: We hypothesize that replacing Thr-4 of TB-500 with 4-fluoro-L-phenylalanine will increase binding affinity to G-actin by inserting a polarized aromatic ring into the hydrophobic c…
Tesamorelin Ala-8,9,15,16,22,27 → Aib hexa-substitution for helix lock
№50Hypothesis: We hypothesize that installing a single i,i+4 all-hydrocarbon staple between Val-13 and Leu-17 on the central α-helix of Tesamorelin will pre-organize the bioactive helical confor…
Semax His-3 → 1-methyl-histidine: stabilize MC4R aromatic-cluster contact via tautomer locking
№49Hypothesis: We hypothesize that replacing His-3 of Semax with 1-methyl-L-histidine (Nπ-methyl) will increase MC4R binding affinity by locking the imidazole into the τ-tautomer (Nτ-H exposed)…
Lipidation of Ipamorelin Lys-4 with γGlu-C16 to extend plasma half-life via albumin binding
№48Hypothesis: We hypothesize that conjugating a palmitoyl (C16) fatty acid via a γGlu spacer onto the ε-amine of Lys-4 (the only standard Lys, position 5 in the AibHisDBNalDPheLysNH2 sequence)…