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🔥 Hot Today in Peptide Research

October 16, 2026

Last updated October 16, 2026, 08:24 Israel time

A bicyclic peptide, shown in orange sticks, bound to its protease target (PDB 3QN7)

6 stories were heating up that day

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

Modular HPLC instrument stack with pumps and detectors

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.

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

For research-community awareness only. Not legal advice.

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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 Buzz

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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 Buzz

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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 Buzz

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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 Buzz

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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 Buzz

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Law-firm analysis: a reported temporary peptide compounding reprieve would not equal FDA approval

High-performance liquid chromatography system on a laboratory bench

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

Buchanan Ingersoll & Rooney reported on 14 October that federal officials are said to be considering temporary enforcement discretion that could let qualifying compounding pharmacies dispense certain unapproved peptides while FDA works on permanent rules. The firm notes that no written policy, covered substances or conditions have been announced, that enforcement discretion does not amend the statute or amount to FDA approval, and that the 503A bulks list is still set through notice-and-comment rulemaking. It also points pharmacies to supplier certificates of analysis and FDA-registered manufacturing for bulk substances.

For research-community awareness only. Not legal advice.

Buchanan Ingersoll & Rooney PCRegulation

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Short charged elastin-like peptide tags limit insoluble aggregation of scFv-based proteins

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

Researchers at the Gwangju Institute of Science and Technology reported in Biomacromolecules on 14 October short CLEAR tags, charge-laden elastin-like polypeptide sequences, tested on two aggregation-prone scFv-based Albubody proteins. After 7 days at 37 °C the CLEAR-E9 versions kept about 100% and 95% of their soluble protein, against 87% and 40% without the tag. The paper is a protein-engineering and storage-stability study.

BiomacromoleculesResearch

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Pep2Net pairs a 52-resource peptide knowledge base with a multi-task prediction model

Rack of computing servers with blue indicator displays and network cables

Photo: Derrick Coetzee from Berkeley, CA, USA / Wikimedia Commons (CC0) / own upload

Researchers at Hunan University and partner institutions in China reported in Genome Biology on 14 October Pep2Net, which unifies 52 peptide resources into one knowledge base and fuses protein language model embeddings with physicochemical descriptors through cross-attention. The authors report state-of-the-art benchmark results on several peptide property labels and offer a web interface. It is a computational methods study whose outputs are predictions.

Genome BiologyResearch

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One gold-binding peptide caps three bimetallic nanocatalysts to isolate metal composition effects

Scanning electron microscope and control desk in an analytical laboratory

Photo: kallerna / Wikimedia Commons (Public domain) / own upload

Researchers at the University of Miami and the Air Force Research Laboratory reported in ACS Applied Nano Materials on 14 October palladium-gold, gold-silver and palladium-silver nanoparticles under 5 nm, all capped with the same AuBP1 peptide. In 4-nitrophenol reduction, PdAu at 3:2 and AuAg at 4:1 showed enhanced reactivity. The work is a materials-chemistry and catalysis study with no biological testing.

ACS Applied Nano MaterialsResearch

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Perspective proposes reactive-site accounting for thiol-maleimide peptide coupling on liposomes

Ribbon render of a heptameric membrane pore protein (PDB 7AHL)

Photo: Image: BioLabs Research, rendered from PDB 7AHL (RCSB PDB, CC0) / own upload

Researchers at Sabanci University and Mersin University published a Perspective in Frontiers in Drug Delivery on 13 October arguing that effective maleimide availability is an underreported variable when peptides are coupled to PEGylated liposomes. Using seven published liver-targeting formulations as a case set, they propose reporting six separate quantities, from nominal maleimide input to final and receptor-accessible ligand density. It is a formulation-reporting framework, not a clinical report.

Frontiers in Drug DeliveryResearch

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Microsecond simulations show slow peptide-plane flips in a protein loop

Ribbon render of ubiquitin inside a translucent molecular surface (PDB 1UBQ)

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

Researchers at Case Western Reserve University and Bar-Ilan University reported in The Journal of Physical Chemistry B on 13 October a symmetry-based framework for peptide-plane dynamics in protein loops, built on 1-microsecond molecular dynamics simulations of the plexin-B1 Rho GTPase-binding domain. The longer runs revealed a second, inversion-related component of the local potential that rarely interconverts with the first, pointing to slow microsecond motion such as beta-turn crankshaft flips. The paper is computational biophysics with a companion article in the same issue.

The Journal of Physical Chemistry BResearch

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