Tag

Amino Acids

All articles tagged with #amino acids

space9 days ago•165 min saved

Space harbors life’s ingredients: nucleobases and amino acids found, but DNA and RNA remain undetected

Space has yielded nucleobases—the building blocks of DNA and RNA—and amino acids on the asteroid samples Bennu and Ryugu, along with more than a dozen prebiotic molecules detected in molecular clouds; of about 350 detected space molecules, roughly 180 are complex organic molecules. DNA and RNA themselves have not been found in space, but detections of sugars like erythrulose and other organics suggest the basic ingredients of life can form in space, potentially even before stars and planets, with future missions aiming to uncover larger molecules like ribose or RNA.

via Live Science|

#amino-acids #bennu #nucleobases

science9 days ago•5 min saved

New Jersey Meteorite Sparks Fresh Clues on Life’s Origins

A roughly 1-kilogram meteorite fragment crashed through a New Jersey home's roof after a daytime fireball, later identified as a CM-type carbonaceous chondrite rich in extraterrestrial amino acids and brine minerals. The pristine sample preserves subsurface material and supports the idea that meteorites delivered organic compounds and water-related chemistry to early Earth, potentially aiding the origin of life.

via ITVX|

#amino-acids #astrobiology #brine

science11 days ago•13 min saved

Hillsborough meteorite uncovers hundreds of amino acids, most not from Earth

A Hillsborough, New Jersey meteorite—a primitive CM carbonaceous chondrite that fell in 2024—contains hundreds of amino acids, the majority not known to occur naturally on Earth, preserved in salty brines within the asteroid’s minerals. The finding highlights complex abiotic organic chemistry in a water-altered asteroid and underscores the value of rapid recovery to study pristine extraterrestrial material.

via Space Daily|

#amino-acids #brine-chemistry #cm-carbonaceous-chondrite

health15 days ago•7 min saved

Amino-acid sweet spot may unlock healthier aging, USC study suggests

USC researchers report that a low-protein, methionine-supplemented longevity diet (LDMM) improved healthspan and reduced frailty in aged mice, while preserving lean mass and shedding fat; human data from over 200,000 adults show higher animal-protein intake (and thus higher methionine) links to more obesity and diabetes, suggesting that the specific amino-acid balance, not just total protein, may drive healthy aging. While promising, results do not imply dietary prescriptions for people yet; a controlled human trial of LDMM is planned to test its relevance to aging in people.

via SciTechDaily|

#aging #amino-acids #diet

science17 days ago•5 min saved

Could Eating Less Protein Help You Live Longer? A New Review Suggests Yes

A comprehensive review of more than 350 studies suggests that reducing overall protein intake or limiting certain amino acids may improve metabolic health, reduce inflammation, and slow aging processes in animals, with early human trials showing weight loss and improved insulin sensitivity. The evidence points to a potential need for personalized protein guidelines, since older adults, pregnant individuals, and those recovering from illness may require more protein, while many sedentary adults could benefit from lower intake, especially when paired with appropriate exercise.

via SciTechDaily|

#aging #amino-acids #longevity

health-and-wellness18 days ago•12 min saved

Protein Power: Finding Your Personal Sweet Spot for Gains

Nutrition experts say there’s a sweet spot for protein intake—roughly 1.2–1.6 grams per kilogram of body weight per day (about 0.6–0.8 g per pound) to support muscle, metabolism, and aging. Prioritize high‑quality proteins rich in essential amino acids (eggs, chicken, fish, soy) and balance intake with carbs and regular resistance training; more protein alone won’t boost gains. If you’re consistently short, a “protein nudge” (adding roughly two extra grams of protein per 100 calories) can help reach the target. There’s still much we don’t know about the optimal amount, and context—diet quality and lifestyle—matters to overall health.

via businessinsider.com|

#aging #amino-acids #health-and-wellness

health19 days ago•3 min saved

Could Cutting Protein Help Us Live Longer? New Review Points to Amino Acid Clues

A comprehensive review of over 350 lab and animal studies suggests moderate protein restriction, including limiting amino acids like methionine, isoleucine, and valine, may support healthier aging by improving metabolism, reducing inflammation, and boosting autophagy; early human trials show some benefits for blood sugar and fat loss but no clear evidence that lifespan is extended in people. Protein needs vary by age, activity, and health, so reducing intake isn’t appropriate for everyone—especially older adults or those with higher protein requirements—highlighting the need for personalized guidance from healthcare professionals.

via Healthline|

#aging #amino-acids #health

science21 days ago•7 min saved

Amino-Acid Restrictions Linked to Longer Healthy Lifespan, Review Finds

A comprehensive review of over 350 studies finds that lowering total dietary protein or restricting specific essential amino acids—especially isoleucine and methionine—may promote longevity and better metabolic health by activating repair pathways (FGF21, autophagy) and dampening growth signals (mTORC1, GCN2). Benefits observed in animals and some human data; however, protein needs vary with age and activity, and excessive restriction could harm older adults by raising sarcopenia risk. The authors stress optimizing amino-acid balance rather than simply eating less protein, and more human research is needed.

via Medical News Today|

#aging #amino-acids #longevity

science22 days ago•8 min saved

Briny Clues from a Primitive Asteroid Found in Hillsborough Meteorite

Scientists analyzing the Hillsborough meteorite that pierced a New Jersey home found salt-rich, near-surface brines in a CM1/2 primitive asteroid fragment, along with diverse organic molecules and amino acids—evidence that brine chemistry in primitive asteroids could have delivered prebiotic material to early Earth and that this CM1/2 fall is exceptionally rare.

via SciTechDaily|

#amino-acids #brines #cm12

health-and-science25 days ago•9 min saved

Protein restriction could improve health and extend lifespan, review finds

A comprehensive review of 350+ studies links lower protein intake to healthier aging and possible lifespan extension by boosting metabolism and the hormone FGF21; amino acids such as methionine, isoleucine, and valine may drive these effects, though protein remains essential for muscle and certain groups, suggesting more personalized protein guidelines rather than a universal high-protein approach.

via News-Medical|

#aging #amino-acids #dietary-guidelines

science1 month ago•7 min saved

Hillsborough Meteorite Uncovers Amino Acids, Hinting at Life's Origins

A Hillsborough, New Jersey meteorite that crashed into a home in 2024 contains amino acids and other organics and has been identified as a rare CM1/2 carbonaceous chondrite; NASA scientists say its complex organic chemistry supports the idea that life’s building blocks were delivered to early Earth by ancient asteroids, with findings published in Science Advances.

via Fox News|

#amino-acids #astrobiology #carbonaceous-chondrite

space1 month ago•103 min saved

Ancient space rock carries life's building blocks to Earth, study finds

Scientists analyzing the Hillsborough meteorite that crashed into a New Jersey home in 2024 found amino acids and other prebiotic molecules in a salt‑rich carbonaceous chondrite, suggesting the building blocks of life were present in a primitive protoplanet and may trace back to the early solar system's asteroid belt, with minerals compared to samples from Ryugu and Bennu to pinpoint its origin.

via Live Science|

#amino-acids #carbonaceous-chondrite #hillsborough-meteorite

science1 month ago•6 min saved

Salty brines in an ancient asteroid unlock clues to life’s ingredients

Analysis of the pristine Hillsborough CM1/2 meteorite, which fell in daylight over New Jersey in 2024, reveals concentrated salty brines in its parent asteroid and signs of aqueous alteration, preserving salts and a suite of organic compounds including amino acids, implying primitive asteroids harbored chemically active environments that could have seeded life's ingredients on early Earth.

via ScienceAlert|

#amino-acids #aqueous-alteration #brines

science1 month ago•7 min saved

New Jersey Meteorite Reveals Extraterrestrial Amino Acids and Ancient Water Clues

A ~1 kilogram Hillsborough, New Jersey meteorite that crashed through a home roof has been identified as a CM-type carbonaceous chondrite containing a diverse suite of amino acids largely extraterrestrial in origin, with salt minerals (brine) suggesting preserved water from the asteroid’s interior; researchers say the pristine sample offers a rare window into early solar-system chemistry and how organic matter may have been delivered to Earth.

via 6abc Philadelphia|

#amino-acids #brine #carbonaceous-chondrite

science1 month ago•2 min saved

New Jersey Meteorite Uncovers Ancient Water Clues Behind Life’s Ingredients

Scientists analyzing the Hillsborough meteorite that crashed into a New Jersey home found evidence it originated from a primitive inner-belt asteroid, likely the Erigone family, containing amino acids and organic compounds and high salt from ancient brines. The findings support the idea that water and the chemical ingredients for life could be delivered to Earth via carbonaceous asteroid fragments.

via Gizmodo|

#amino-acids #astrobiology #early-solar-system