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by Eran Hodis
Green fluorescent protein (GFP) is a bioluminescent polypeptide isolated from the jellyfish Aequorea victoria. GFP converts the blue chemiluminescence of aequorin into green fluorescent light. In the laboratory, GFP can be incorporated into a variety of biological systems in order to function as a marker protein. Since its discovery in 1962, GFP has become a significant contributor to the research of monitoring gene expression, localization, mobility, traffic, or interactions between various membrane and cytoplasmic proteins.

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by Eric Martz
A historical review on sculptures and physical models of macromolecules.

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G Atilla-Gocumen, L Di Costanzo, E Meggers. J Biol Inorg Chem. 2010 doi: 10.1007/s00775-010-0699-x
A crystal structure of an organometallic half-sandwich ruthenium complex bound to glycogen synthase kinase 3ß (GSK-3ß) reveals that the inhibitor binds to the ATP binding site via an induced fit mechanism utilizing several hydrogen bonds and hydrophobic interactions. Importantly, the metal is not involved in any direct interaction with the protein kinase but fulfills a purely structural role.

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Above is a transmembrane protein that takes up, into your intestinal cells, orally consumed peptide nutrients and drugs. Its lumen-face (shown above) opens and binds peptide or drug, then closes, while its cytoplasmic face (opposite end from the above) opens to release its cargo into the intestinal cell, which passes it on into the blood circulation.

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