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In the brain, focal ischemia results in a local region of cell death and disruption of both local and remote functional neuronal networks. Tissue reorganization following stroke can be limited by factors such as extracellular matrix (ECM) molecules that prevent neuronal growth and synaptic plasticity. The brain's ECM plays a crucial role in network formation, development, and regeneration of the c
Vi kryllar av bakterier. De bor framför allt i vår tjocktarm där de lever på de delar av vår mat som vi inte kan ta hand om själva. I utbyte omvandlar bakterierna en del av maten de äter till vitaminer och fettsyror som är viktiga för oss. Det bor flera olika arter av bakterier i vår tarm som äter lite olika saker, eftersom det är ont om mat för så många har de flesta specialiserat sig för att minHuman gut bacteria utilise different types of polysaccharides present in our diet. One of these polysaccharides is galactomannan. Many organisms in the phylum Bacteroidetes have gene clusters encoding for all proteins required for hydrolysis, binding and transport of one type of polysaccharide, called polysaccharide utilisation loci (PULs). A PUL from the human gut bacterium Bacteroides ovatus was
Human DNA polymerase λ is an intermediate fidelity member of the X family, which plays a role in DNA repair. Recent X-ray diffraction structures of a ternary complex of a loop-deletion mutant of polymerase λ, a deoxyguanosine triphosphate analogue, and a gapped DNA show that guanine and thymine form a mutagenic mispair with an unexpected Watson-Crick-like geometry rather than a wobble geometry. He
