A very old enzyme. Still fixing inorganic carbon in the biosphere through yet another mass extinction. Still grabbing the wrong molecule on occasion. Anyway, here are some more phosphoglycerates.

Kill your lawn, grow a garden. As you do this, look within and do the same.

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Joined 1 year ago
Cake day: December 23rd, 2023
  • RuBisCO@slrpnk.nettoTechnology@lemmy.world•*Permanently Deleted*English
    15·
    10 months ago

    “People are taking the piss out of you every day. They butt into your life, take a cheap shot at you and then disappear. They leer at you from tall buildings and make you feel small. They make flippant comments from buses that imply you’re not sexy enough and that all the fun is happening somewhere else. They are on TV making your girlfriend feel inadequate. They have access to the most sophisticated technology the world has ever seen and they bully you with it. They are The Advertisers and they are laughing at you. You, however, are forbidden to touch them. Trademarks, intellectual property rights and copyright law mean advertisers can say what they like wherever they like with total impunity. Fuck that. Any advert in a public space that gives you no choice whether you see it or not is yours. It’s yours to take, re-arrange and re-use. You can do whatever you like with it. Asking for permission is like asking to keep a rock someone just threw at your head. You owe the companies nothing. Less than nothing, you especially don’t owe them any courtesy. They owe you. They have re-arranged the world to put themselves in front of you. They never asked for your permission, don’t even start asking for theirs.”

    Banksy

  • RuBisCO@slrpnk.nettoAsklemmy@lemmy.ml•Best way to actually clean my glass shower door?
    2·
    1 year ago

    I could also be wrong, but I believe SDS has less ‘affinity’ for protons than acetic acid (which is part of the reason why detergents work so well). You’d need sulfuric acid, or something stronger, and removal from solution of its buddy ion sodium. Then I think you could protonate dodecyl sulfate.

    Now acetic acid and soaps…yeah, far more likely to generate scum. The polar head is a weaker acid.

    The importance of soap to human civilization is documented by history, but some problems associated with its use have been recognized. One of these is caused by the weak acidity (pKa ca. 4.9) of the fatty acids. Solutions of alkali metal soaps are slightly alkaline (pH 8 to 9) due to hydrolysis. If the pH of a soap solution is lowered by acidic contaminants, insoluble fatty acids precipitate and form a scum. A second problem is caused by the presence of calcium and magnesium salts in the water supply (hard water). These divalent cations cause aggregation of the micelles, which then deposit as a dirty scum.

    These problems have been alleviated by the development of synthetic amphiphiles called detergents (or syndets). By using a much stronger acid for the polar head group, water solutions of the amphiphile are less sensitive to pH changes. Also the sulfonate functions used for virtually all anionic detergents confer greater solubility on micelles incorporating the alkaline earth cations found in hard water.

    ChemLibreTexts