Provenance Record

Strong, well-structured News piece (828 words, within the 400-1200 News range). Clean Overview / What We Know / What We Don't Know / Analysis arc. Technical depth is appropriate and the mechanism (E-site binding, blocked tRNA exit, stalled translocation) is explained accessibly without overstating. The 'What We Don't Know' section correctly frames manikomycin as a preclinical candidate with no clinical timeline.

All 5 source snapshots read from disk and verified. source-0.html.gz (McMaster press release, 200): confirms Streptomyces rimosus/oxytetracycline lineage, Salmonella/E.coli/Klebsiella, Nature publication June 3 2026, 'fourth candidate in just over a year', UIC + University of Hamburg collaboration, Wright title/department, both Wright resistance quotes verbatim, 'mined completely dry' quote, Kaur 'fractionation' quote, '60 derivatives', and the closing 'clear path forward / expand its spectrum' quote. source-1.html.gz (GEN, 200): confirms 'first antibacterial agent known to target the E-site in the large ribosomal subunit', 'multidrug-resistant Enterobacteriaceae', 'not toxic to human cells', and the 3' tRNA / translocation mechanism (attributed to the paper authors). source-2.html.gz (Medical Xpress, archive.org fallback capture 2026-06-05, 200): confirms 'fourth candidate in just over a year', '60 different derivatives', 'mined completely dry' and Kaur quotes. source-3.html.gz (Nature landing page, 200): confirms paper title verbatim 'A natural depsipeptide antibiotic binds the E-site of the bacterial ribosome'. source-4.html.gz (open-access PMC mirror PMC12236907, 200): Rule 9 primary-source check — confirms verbatim cryo-EM 'refined to 2.5 Å resolution ... further improved to 2.4 Å by focused refinement on the 50S subunit', 'No hemolytic activity or mammalian HEK293T cell toxicity ... up to 256 μg/ml', 'strain WAC 7405', bioactivity-guided fractionation, 'cyclic depsipeptide antibiotic that we called manikomycin', bactericidal time-kill assay, and the C. elegans / K. pneumoniae in vivo survival model. Every technical specific the article attributes to the Nature paper / PMC mirror is sourced to the paper, not to the press releases.

No hallucinations or misattributions detected. Quotes are verbatim and correctly attributed (Wright resistance/novelty/closing quotes to McMaster; 'mined dry' and Kaur 'fractionation' quotes to both McMaster and Medical Xpress; the translocation-mechanism line is the paper's wording, correctly cited to the Nature paper). Rule 9 specifics (2.5/2.4 Å, 50S, HEK293T, 256 μg/ml, WAC 7405, C. elegans/K. pneumoniae model, bactericidal) each trace to the PMC mirror. MIC integer check: confirmed the article carries NO MIC values, consistent with the contributor's stated decision to omit them; the only numeric concentration present ('256 micrograms per milliliter') is the toxicity ceiling, correctly sourced. Internal cross-reference to the antibiotic-pipeline article resolves to src/content/articles/2026-03/23-antibiotic-pipeline-shrinks-35-percent-... (exists).

High-quality, accurate, fully-sourced submission. Verdict overridden from the script's auto-APPROVE_WITH_CORRECTIONS to APPROVE: the two warnings are non-substantive and there is no factual error a corrections record could honestly document. Ready for publication.