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🔥 Hot Today in Peptide Research

October 17, 2026

Last updated October 17, 2026, 08:24 Israel time

Stick and ribbon render of the 20-residue Trp-cage miniprotein (PDB 1L2Y)

6 stories were heating up that day

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Benchmark of 10 public antimicrobial peptide MIC predictors finds ranking more reliable than exact values

Data centre roof with rows of cooling towers

Photo: Rsparks3 / Wikimedia Commons (CC0) / own upload

Researchers at Hunan Normal University reported in Small Methods on 15 October an out-of-the-box benchmark of 10 publicly released tools that predict antimicrobial peptide minimum inhibitory concentrations from sequence. Most showed poor absolute MIC regression and limited transfer to an external dataset, while selected tools kept useful ranking and virtual-screening enrichment; reproducibility of the published implementations also varied. The authors position the tools as early screening filters, not substitutes for measured MICs.

Small MethodsResearch Buzz

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NuXLApp puts protein-nucleic acid crosslinking mass spectrometry analysis in one open-source web app

Modular HPLC instrument stack with pumps and detectors

Photo: Kjaergaard at English Wikipedia / Wikimedia Commons (Public domain) / own upload

Researchers at the University of Tübingen, the Max Planck Institute for Multidisciplinary Sciences and University Medical Center Göttingen reported in Protein Science on 15 October NuXLApp, which combines the NuXL crosslink search engine, machine-learning rescoring, DIA spectral-library generation and interactive dashboards in shareable workspaces. On an E. coli peptide-RNA example dataset, rescoring raised identifications from 972 to 1,054 crosslink spectrum matches at 1% FDR. The code is BSD-licensed on GitHub.

Protein ScienceResearch Buzz

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FRET sensor and AI peptide design combined to screen inhibitors of the Zika virus NS2B-NS3 protease

Ribbon render of the Zika virus NS2B-NS3 protease with a bound inhibitor in sticks (PDB 5LC0)

Photo: Image: BioLabs Research, rendered from PDB 5LC0 (RCSB PDB, CC0) / own upload

Researchers at Universidad Peruana de Ciencias Aplicadas in Lima reported in Scientific Reports on 15 October a recombinant FRET-based sensor for the Zika virus NS2B-NS3 protease, paired with de novo peptide generation (RFdiffusion, ProteinMPNN) and computational filtering by docking, AlphaFold-3 co-folding and molecular dynamics. Enzyme-assay screening found three candidate peptide inhibitors, the strongest with an IC50 of 214 micromolar. The study is an in vitro biochemistry and design workflow.

Scientific ReportsResearch Buzz

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Solid-state NMR review shows peptaibol length and lipid mix decide membrane orientation and oligomer size

Ribbon render of a voltage-gated potassium channel assembly (PDB 2R9R)

Photo: Image: BioLabs Research, rendered from PDB 2R9R (RCSB PDB, CC0) / own upload

Researchers at the University of Strasbourg and CNRS reviewed in the Journal of Peptide Science on 16 October solid-state NMR work on Aib-rich fungal peptaibols in lipid bilayers. Alamethicin mostly adopts transmembrane alignments and forms dimers or pentamers depending on concentration, while shorter peptaibols such as trichogin lie parallel to the surface and form in-plane tetramers; in a bacterial-membrane mimic even alamethicin lies flat. The work is model-membrane biophysics.

Journal of Peptide ScienceResearch Buzz

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MAOMAO harmonises peptide toxicity annotations from 56 sources into one FAIR, ontology-guided resource

Ribbon render of two melittin peptide helices (PDB 2MLT)

Photo: Image: BioLabs Research, rendered from PDB 2MLT (RCSB PDB, CC0) / own upload

Researchers at Universidad de Magallanes and Universidad del Desarrollo in Chile, with PEACCEL in France, reported in Frontiers in Pharmacology on 16 October MAOMAO, which maps toxicity annotations for 71,857 unique peptide sequences onto eight endpoints with evidence states, provenance, descriptors, protein-language-model embeddings and benchmark splits. The data are on Zenodo and the code on GitHub under an MIT licence; the authors note the splits are not similarity-controlled.

Frontiers in PharmacologyResearch Buzz

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Astral analyzer benchmarked for metaproteomics on a 30-organism ground-truth microbial community

Thermal ionization mass spectrometer in an analytical laboratory

Photo: Radiogenic / Wikimedia Commons (CC0) / own upload

Researchers at Woods Hole Oceanographic Institution, the University of Minnesota, North Carolina State University and Thermo Fisher Scientific reported in the Journal of the American Society for Mass Spectrometry on 14 October a data-independent acquisition benchmark of an asymmetric track lossless (Astral) mass analyzer on a defined community of 30 microorganisms. Compared with an Orbitrap Fusion it improved depth and accuracy with acceptable precision; FAIMS added peptide identifications but cost precision and throughput.

Journal of the American Society for Mass SpectrometryResearch Buzz

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FDA notice on an interim access policy for compounding certain peptides enters White House review

Photo: Kjaergaard at English Wikipedia / Wikimedia Commons (Public domain) / own upload

The federal regulatory review dashboard reginfo.gov lists an HHS/FDA notice titled "Interim Access Policy for Compounding Using Certain Peptides" (RIN 0910-ZD94) as pending review under Executive Order 12866, received on 14 October 2026. The listing marks the notice as not economically significant and gives no legal deadline. It does not include the policy text, the substances covered or any conditions; a pending review is not a published policy and does not amount to FDA approval of any substance.

For research-community awareness only. Not legal advice.

Reginfo.gov (OIRA, Pending EO 12866 Regulatory Review)FDA

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ScopeNovo reranks de novo peptide sequencing candidates against the observed mass spectrum

Autosampler carousel of a liquid chromatography system

Photo: Groep29 BFW / Wikimedia Commons (Public domain) / own upload

Researchers at the City University of Hong Kong reported in Bioinformatics on 15 October ScopeNovo, which takes several candidate sequences from an existing de novo sequencing model and reranks them by similarity between the input tandem mass spectrum and a representative spectrum for each candidate. On the nine-species V1 and V2 benchmarks it raised peptide accuracy over its base model by up to 6.1%. The code is open source under an MIT licence.

BioinformaticsResearch

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Genome survey adds 36 putative antimicrobial peptides to the malaria mosquito's immune repertoire

Stick and ribbon render of the helical antimicrobial peptide LL-37 (PDB 2K6O)

Photo: Image: BioLabs Research, rendered from PDB 2K6O (RCSB PDB, CC0) / own upload

Researchers at the Johns Hopkins Bloomberg School of Public Health reported in npj Antimicrobials and Resistance on 13 October 36 previously uncharacterised putative antimicrobial peptides in Anopheles gambiae, with larval, salivary-gland and Malpighian-tubule expression patterns. Four synthetic peptides showed broad-spectrum activity, and two salivary-gland peptides cut Plasmodium falciparum sporozoite viability by about 81% and 75% in laboratory assays. The work is insect immunology.

npj Antimicrobials and ResistanceResearch

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Minimised HMGB1 B-box peptides split anti-biofilm and anti-NET functions in vitro

Zinc-finger protein domains wrapped around a DNA helix (PDB 1AAY)

Photo: Image: BioLabs Research, rendered from PDB 1AAY (RCSB PDB, CC0) / own upload

Researchers at Nationwide Children's Hospital and Ohio State University reported in Frontiers in Immunology on 16 October that a 42-residue linker-plus-helix-1 fragment of an engineered HMGB1 B-box peptide keeps both biofilm disruption and inhibition of neutrophil extracellular trap formation. Dropping the linker left a 29-residue anti-biofilm-only peptide, while DNA-binding mutations left only the anti-NET activity. All experiments were in vitro.

Frontiers in ImmunologyResearch

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Helix-loop-helix peptide amphiphiles form helical nanospheres or beta-sheet discs depending on preparation

Ribbon render of the ROP protein helix-loop-helix hairpin (PDB 1ROP)

Photo: Image: BioLabs Research, rendered from PDB 1ROP (RCSB PDB, CC0) / own upload

Researchers at Heidelberg University, ETH Zurich and Ruhr University Bochum reported in Small on 13 October an amphiphilic peptide that folds into a helix-loop-helix hairpin with leucine-rich helices and a positively charged loop. Prepared from ethanol at room temperature it formed alpha-helical spheres under 100 nm that stayed stable at 4 °C and pH 3, while ultrasonication in warm buffer gave beta-sheet discs prone to fusing. Loop charge and lysine-versus-arginine content strongly affected sphere stability.

SmallResearch

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Vibrational spectroscopy shows an antibody lying flat on a surface-bound mimotope peptide

Ribbon render of a complete IgG antibody structure (PDB 1IGT)

Photo: Image: BioLabs Research, rendered from PDB 1IGT (RCSB PDB, CC0) / own upload

Researchers at the University of Michigan, the University of South Carolina and the University of Missouri reported in Analytical Chemistry on 14 October sum frequency generation spectroscopy of an anti-HER2 monoclonal antibody binding the mimotope peptide CH19 at a buried solid/liquid interface. Combined with molecular dynamics and spectral calculations, the data show a lying-down antibody orientation and a contact pattern unlike that in solution; two non-target antibodies showed no detectable binding. The work targets biosensor design.

Analytical ChemistryResearch

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