June 24, 2026

Biology

Tiny protein pairs may hold the secret to life’s origin– www.sciencedaily.com

pgnewser September 22, 2025 0

Tiny protein pairs may hold the secret to life’s origin– www.sciencedaily.com
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Genes are the building blocks of life, and the genetic code provides the instructions for the complex processes that make organisms function. But how and why did it come to be the way it is? A recent study from the University of Illinois Urbana-Champaign sheds new light on the origin and evolution of the genetic code, providing valuable insights for genetic engineering and bioinformatics.

“We find the origin of the genetic code mysteriously linked to the dipeptide composition of a proteome, the collective of proteins in an organism,” said corresponding author Gustavo Caetano-Anollés, professor in the Department of Crop Sciences, the Carl R. Woese Institute for Genomic Biology, and Biomedical and Translation Sciences of Carle Illinois College of Medicine at U. of I.

Caetano-Anollés’ work focuses on phylogenomics, which is the study of evolutionary relationships between the genomes of organisms. His research team previously built phylogenetic trees mapping the evolutionary timelines of protein domains (structural units in proteins) and transfer RNA (tRNA), an RNA molecule that delivers amino acids to the ribosome during protein synthesis. In this study, they explored the evolution of dipeptide sequences (basic modules of two amino acids linked by a peptide bond), finding the histories of domains, tRNA, and dipeptides all match.

Life on Earth began 3.8 billion years ago, but genes and the genetic code did not emerge until 800,000 million years later, and there are competing theories about how it happened.

Some scientists believe RNA-based enzymatic activity came first, while others suggest proteins first started working together. The research of Caetano-Anollés and his colleagues over the past decades supports the latter view, showing that ribosomal proteins and tRNA interactions appeared later in the evolutionary timeline.

Spiders Will Hunt in Groups and Share Meals if They Have Enlarged Brain Structures– www.discovermagazine.com

pgnewser September 19, 2025 0

Spiders Will Hunt in Groups and Share Meals if They Have Enlarged Brain Structures– www.discovermagazine.com
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Most spiders are known for being loners that keep to themselves. But in rare instances, some close-knit spider communities rely on strength in numbers. From a young age, the spiders in these groups show selfless behaviors such as joining forces on hunts or sharing meals with one another.

A new study published in Integrative Zoology suggests that these spiders get along so well partly because of what’s inside of their brains. Researchers found that certain brain regions of social huntsman spiders and social crab spiders — both of which live in groups — display slight variations compared to spiders that live alone. The distinct structure of these regions may be the reason why some spiders develop strong social skills while others have a preference for privacy.

If you ever find yourself peeling back the bark of a eucalyptus tree or a dead acacia tree in Australia, you could be in for a surprise that’ll make you jump out of your shoes. Chances are, you’ll come across a hidden conclave of social huntsman spiders, which live in groups containing potentially hundreds of individuals.

Not all spiders have grand get-togethers like this. In fact, the behavior is extremely rare among spider species — only 0.1 percent of the world’s 53,000 spider species live in groups.

Most spiders are territorial and become aggressive toward others of their kind, even resorting to cannibalism at times. Social spiders, on the other hand, usually get along well with their kin.

Scientists stunned by discovery of three never-before-seen snailfish in the Pacific Ocean |– timesofindia.indiatimes.com

pgnewser September 10, 2025 0

Scientists stunned by discovery of three never-before-seen snailfish in the Pacific Ocean |– timesofindia.indiatimes.com
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Source: Ichthyology and Herpetology

In a groundbreaking advancement for marine science, researchers have discovered a new species of deep-sea snailfish, named the bumpy snailfish (Careproctus colliculi). This discovery emphasises the critical need to study deep-ocean biodiversity, particularly as global climate change and human activity continue to impact marine ecosystems.The bumpy snailfish represents more than just a new addition to marine taxonomy. Using MBARI’s cutting-edge underwater technology, scientists from the Monterey Bay Aquarium Research Institute (MBARI) and the State University of New York at Geneseo (SUNY Geneseo) were able to capture detailed observations of this unique species. Their research, published in the journal Ichthyology and Herpetology sheds light on the adaptations and survival strategies of deep-sea organisms and highlights the extraordinary biodiversity hidden within the largely unexplored depths of the ocean.