Alicia
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thecoffeeslayer.bsky.social
Alicia
@thecoffeeslayer.bsky.social
110 followers 160 following 370 posts
🗑🔥🐈‍⬛️ vs 🐈 vs 🤦🏻‍♀️
🖖🏼🦇🎃🌎🎶🇵🇷🌈☕️
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Reposted by Alicia
sailorrooscout.bsky.social
Chemists discovered a powerful hidden antibiotic that’s 100 times stronger than existing ones and effective against deadly superbugs.

The study has been published in the Journal of the American Chemical Society. YES, it is PEER-REVIEWED.
• pubs.acs.org/doi/10.1021/...

🧪🧵⬇️
Summary A team of scientists discovered a hidden antibiotic 100 times stronger than existing drugs against deadly superbugs like MRSA. The molecule had been overlooked for decades in a familiar bacterium. It shows no signs of resistance so far, offering hope in the fight against drug-resistant infections and paving the way for new approaches to antibiotic discovery. Abstract The methylenomycins are highly functionalized cyclopentanone antibiotics produced by Streptomyces coelicolor A3(2). A biosynthetic pathway to the methylenomycins has been proposed based on sequence analysis of the proteins encoded by the methylenomycin biosynthetic gene cluster and the incorporation of labeled precursors. However, the roles played by putative biosynthetic enzymes remain experimentally uninvestigated. Here, the biosynthetic functions of enzymes encoded by mmyD, mmyO, mmyF, and mmyE were investigated by creating in-frame deletions in each gene and investigating the effect on methylenomycin production. No methylenomycin-related metabolites were produced by the mmyD mutant, consistent with the proposed role of MmyD in an early biosynthetic step. The production of methylenomycin A, but not methylenomycin C, was abolished in the mmyF and mmy mutants, consistent with the corresponding enzymes catalyzing the epoxidation of methylenomycin C, as previously proposed. Expression of mmyF and mmyo in a S. coelicolor M145 derivative engineered to express mmr, which confers methylenomycin resistance, enabled the resulting strain to convert methylenomycin C to methylenomycin A, confirming this hypothesis. A novel metabolite (premethylenomycin C), which readily cyclizes to form the corresponding butanolide (premethylenomycin C lactone), accumulated in the mmyE mutant, indicating the corresponding enzyme is involved in introducing the exomethylene group into methylenomycin C. Remarkably, both premethylenomycin C and its lactone precursor were one to two orders of magnitude more active against various Gram-positive bacteria, including antibiotic-resistant Staphylococcus aureus and Enterococcus faecium isolates, than methylenomycins A and C, providing a promising starting point for the development of novel antibiotics to combat antimicrobial resistance. Graphical Abstract
November 16, 2025 at 7:32 PM
Reposted by Alicia
altnps.bsky.social
Links:

www.ktvu.com/news/snap-be...

www.fox6now.com/news/wiscons...

www.easternecho.com/article/2025...
Trump ordered to fully fund SNAP, Bay Area woman wakes up to full EBT card
Lisa Trujillo of Richmond has been checking her EBT card, checking to see how much money she has on it. On Friday morning, she woke up early to a pleasant surprise. Her Electronic Benefit Transfer car...
www.ktvu.com
November 7, 2025 at 4:49 PM
thecoffeeslayer.bsky.social
What is this "slumber"?
November 7, 2025 at 5:04 PM
thecoffeeslayer.bsky.social
cute No Touch bebes!
November 7, 2025 at 4:42 AM
thecoffeeslayer.bsky.social
It was so nice. I'm so rarely in truly sapphic spaces, much less with those near my age group. It was like being a kid again. But, being the kid I couldn't be. Because, ya know, c@tholic upbringing.
November 3, 2025 at 4:10 AM