biodiversity

Pattern recognition: biogeochemical structure and function

Microbes Effect on the Brain Excerpt: Recent research shows dramatic effects of microbe products from the gut on mental function—depression, stress, autism, and degenerative illness. In humans, many studies show microbes affect anxiety, mood, depression and social behavior. Direct effects are through secreted products, stimulation of the enteric nervous system and travel of microbes into the brain, while indirect factors are microbes’ influence on immune function affecting behavior. Microbes produce molecules that transform into hormones and neurotransmitters or they produce…

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Viruses and the human-like microbiome

Ocean’s microbiome has incredible diversity – and human likeness Excerpt: The microbiome of the world’s biggest ecosystem and one of the smallest appear to function in surprisingly similar ways. The New Scientist article  reports on: Structure and function of the global ocean microbiome Journal article abstract conclusion: …vertical stratification with epipelagic community composition mostly driven by temperature rather than other environmental factors or geography. We identify ocean microbial core functionality and reveal that >73% of its abundance is shared with…

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Informing the biologically uninformed

Please help those who are not biologically uninformed link the latest information from Science Magazine to RNA-mediated cell type differentiation in all genera. For example, see:  Eukaryotic plankton diversity in the sunlit ocean Introduction: The sunlit surface layer of the world’s oceans functions as a giant biogeochemical membrane between the atmosphere and the ocean interior (1). My comment: That fact links the anti-entropic epigenetic effects of the sun’s biological energy from the de novo creation of amino acids to RNA-mediated…

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Gene expression, immortality, and cancer

Collaborative research team solves cancer-cell mutation mystery Excerpt: TERT stabilizes chromosomes by elongating the protective element at the end of each chromosome in a cell. …cells harboring these mutations aberrantly increase TERT expression, effectively making them immortal. My comment: To an evolutionary theorist, this might suggest that protein folding instability is beneficial. For example, see: “Mutation-Driven Evolution” Excerpt:  …genomic conservation and constraint-breaking mutation is the ultimate source of all biological innovations and the enormous amount of biodiversity in this world.…

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Scientists lose. A sci-fi author gains credibility

Phage spread antibiotic resistance Excerpt 1) nearly half of the 50 chicken meat samples purchased from supermarkets, street markets, and butchers in Austria contained viruses that are capable of transferring antibiotic resistance genes from one bacterium to another—or from one species to another. Excerpt 2) Until recently, transduction of antibiotic resistance via phage was assumed to be a very minor source of the spread of resistance, said Hilbert. My comment: Bacteriophages were linked to cell type differentiation in species from…

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Virus-driven cancer treatment and prevention

Blocking a metabolic pathway may shrink aggressive form of common kidney cancer Excerpt: ..the cancer cells appear to rely primarily on the metabolism of an amino acid called glutamine for their energy. My comment:  This links differences in hydrogen atom energies and the anti-entropic epigenetic effect of nutrient energy to virus-driven differences in the metabolism of glutamine and DNA repair. Those differences link viral microRNAs to entropic elasticity. The differences also link nutrient-dependent microRNAs to the stability of organized genomes…

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A special issue on nutritional epigenetics

See also: Retinoic acid + one receptor regulate the genome Two decades of scientific progress link what we detailed about RNA-mediated cell type differentiation in our 1996 review: From Fertilization to Adult Sexual Behavior.  Others have begun to learn more about the biological basis of ecological adaptations that link nutrient uptake to the pheromone-controlled physiology of reproduction in all vertebrates by the conserved molecular mechanisms of biophysically constrained RNA-mediated amino acid substitutions and the chemistry of protein folding. For example,…

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Retinoic acid + one receptor regulate the genome

See also: Epigenetics: microRNAs effect an integrative pathway for my additional comments on Master orchestrator of the genome is discovered, stem cell scientists report) Retinoic acid is a metabolite of vitamin A (retinol) that mediates the functions of vitamin A required for growth and development. The fibroblast growth factor receptor 1 “…gene provides instructions for making a protein called fibroblast growth factor receptor 1. This protein is one of four fibroblast growth factor receptors, which are related proteins that are…

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Epigenetics: microRNAs effect an integrative pathway

Global Developmental Gene Programing Involves a Nuclear Form of Fibroblast Growth Factor Receptor-1 (FGFR1) Excerpt 1) The accumulation of hypoglycosylated nuclear FGFR1 (nFGFR1) is stimulated by a variety of developmental signals, including various growth factors, hormones, and neurotransmitters as well as a reduction in cell contact. This is the reason that this pathway is referred to as integrative [1, 15]. Reported as: Master orchestrator of the genome is discovered, stem cell scientists report Summary: New research shows how a single…

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Tissue type variation and expression of genes

Exploring the Impacts of Genetic Variation on Tissue-Specific Expression Preliminary results from the Genotype-Tissue Expression project reveal that gene expression varies more across tissues than across individuals. By Jenny Rood | May 7, 2015 Excerpt: “You’ve got the genetic variation, you’ve got the gene expression levels, you’ve got the different tissues…” My comment: What you don’t have is a model of RNA-directed DNA methylation and RNA-mediated amino acid substitutions that links the epigenetic landscape to the physical landscape of DNA…

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