rlfswdn · @rlfswdn
16 followers · 605 posts · Server mstdn.science
Mikko Tuomi · @mustapipa
2018 followers · 529 posts · Server scicomm.xyz

All biological amino acids on Earth appear exclusively in their left-handed form, but the reason for this is elusive.

Recently, scientists uncovered new clues about the cosmic origin of this asymmetry.

That the precursors to the biological amino acids may have determined the amino acid chirality during the early phase of galactic evolution.


phys.org/news/2023-03-insights

Paper by Shoji et al. (2023):
pubs.acs.org/doi/10.1021/acs.j

#AminoAcids #astrobiology

Last updated 2 years ago

Vaclav Hanzl · @vaclavh
19 followers · 33 posts · Server sigmoid.social

by just for fun 'cause I can :)

Hard to believe that complete set of life's stock parts fits on screen: 22 + 4 blocks. Anything else can be made of these, or by tools made of these, or by tools made by tools made by... Including you and your computer. I am staring at it in transcendental .

makes fun. And now feels easy after if glasses need a tweak :)

#folding #proteins #neuralnetwork #AminoAcids #RNA #amazement #3d #biochemistry #freecad #pymol #anaglyph

Last updated 2 years ago

rlfswdn · @rlfswdn
15 followers · 523 posts · Server mstdn.science

Tracing the origin of life

A new discovery provides insights into the origin of life

Summary:A team of scientists has discovered a new abiotic pathway for the formation of peptide chains from amino acids -- a key chemical step in the origin of life. The current study provides strong evidence that this crucial step for the emergence of life can indeed occur even in the very inhospitable conditions of space.

sciencedaily.com/releases/2023

#lifeorigin #evolution #AminoAcids #peptides

Last updated 2 years ago

Steve 😷 · @Thompson
34 followers · 637 posts · Server newsie.social

Article/study fails to mention lysine here and that the herpes virus feeds off of arginine, also, so...

"Cancer cells are starving without this protein - study"

jpost.com/science/article-7306

#AminoAcids #lysine #arginine

Last updated 2 years ago

rlfswdn · @rlfswdn
15 followers · 523 posts · Server mstdn.science

Scientists study life origins by simulating a cosmic evolution

Amino acids make up millions of proteins that drive the chemical gears of life, including essential bodily functions in animals.... After all, amino acids may have helped spawn life on Earth after being delivered here about 4 billion years ago by pieces of asteroids or comets.

sciencedaily.com/releases/2023

#lifeorigin #evolution #AminoAcids #asteroids #comets

Last updated 2 years ago

KaiserScience · @KaiserScience
184 followers · 188 posts · Server techhub.social

What are amino acids and proteins? This is where biology meets chemistry. It is critical to know the basics of this to understand health, nutrition, and medicine. I put together this graphics-rich resource to make these ideas easier to teach and learn.

kaiserscience.wordpress.com/20


@edutooters

#proteins #AminoAcids #teaching #biology #chemistry #Health #nutrition #stem #ngss

Last updated 2 years ago

Sarah Melamed · @Curiousphage
67 followers · 34 posts · Server fediscience.org

Interesting!

How synonymous mutations alter enzyme structure and function over long timescales

nature.com/articles/s41557-022

#enzymes #mutations #AminoAcids #protein

Last updated 2 years ago

KaiserScience · @KaiserScience
4 followers · 15 posts · Server techhub.social
Scientific European · @ScientificEuropean
202 followers · 235 posts · Server toot.community

’s Wide Array of Potential Therapeutic Effects. | Selegiline is an irreversible monoamine oxidase (MAO) B inhibitor. Monoamine such as and are derivatives of The enzyme...

scientificeuropean.co.uk/medic

#selegiline #neurotransmitters #serotonin #dopamine #norepinephrine #AminoAcids

Last updated 2 years ago

Scientific European · @ScientificEuropean
169 followers · 202 posts · Server toot.community

Origin of What Formed First – or or a Combination Thereof? | ‘Several questions about have been answered, but much remains to be studied’’ said Stanley Miller and Harold Urey way back in 1959 after reporting laboratory synthesis of in primitive earth conditions...

scientificeuropean.co.uk/scien

#molecular #life #protein #dna #RNA #originoflife #AminoAcids

Last updated 2 years ago

Scientific European · @ScientificEuropean
121 followers · 151 posts · Server toot.community

Excessive Intake of for May Impact and | Study in mice shows that excessive long-term intake of dietary protein containing high amounts of branched-chain (BCAAs) can result in imbalance in...

scientificeuropean.co.uk/healt

#protein #bodybuilding #health #lifespan #AminoAcids

Last updated 2 years ago

Pierre Lindenbaum · @yokofakun
396 followers · 185 posts · Server genomic.social

via @clairemcwhite@twitter.com : We present vcMSA, a totally new algorithm for multiple () that's based on clustering protein language representations of . No gaps penalties, substitution matrices, or guide trees required. biorxiv.org/content/10.1101/20

#AminoAcids #MSA #alignment #sequence

Last updated 2 years ago

Joanna Masel · @JoannaMasel
684 followers · 88 posts · Server ecoevo.social

We wanted to know what caused the extraordinarily we previously saw: in and in the degree to which hydrophobic are clustered, as a function of the time elapsed since a Pfam domain originated. elifesciences.org/articles/573 2/11

#LongTermTrends #IntrinsicStructuralDisorder #AminoAcids

Last updated 2 years ago