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Everything posted by BabcockHall

  1. My working hypothesis is that each protein might be expressed in slightly different amounts. Each ribosome binding site might be different, for example. However, I have only done a little reading on this subject.
  2. BabcockHall

    Chemical reactions

    Your structure of ethylenediamine is incorrect. Remember the Lewis octet rule.
  3. BabcockHall

    Amide Reaction

    What do you mean by placement of the N, and why do you think it might be important?
  4. BabcockHall

    Diphenyl ether formation

    @OP, The Williamson ether synthesis is usually given as an example of SN2 chemistry in introductory organic chemistry. Aryl bromides or aryl iodides are unreactive in SN2 reactions. Why do you suppose that is the case?
  5. BabcockHall

    Diphenyl ether formation

    My understanding of the Ullmann reaction is limited, but it appears to be a way to make biaryl compounds. Relative to what you want, the product is missing the oxygen. Can you explain why you think that the Williamson synthesis might not work in this instance?
  6. BabcockHall


    What do you think? Suppose you compare it to acetaminophen. What is different?
  7. BabcockHall

    TLC and polarity

    I would also consider the interaction between the solvent and the silica (the stationary phase).
  8. BabcockHall

    The synthesis of aspartame

    It is often helpful to think in terms of nucleophiles and leaving groups.
  9. Can you think of something that might precipate under these conditions?
  10. BabcockHall

    Lauric Acid Buffer Help!!!

    it is very unusual to make buffers up in anything but aqueous media. I don't know what the solubility of lauric acid is in ethanol, but whatever its pKa in water is, it will have a different pKa i ethanol.
  11. BabcockHall

    Questions about hylauronic acid

    What is BDDE?
  12. BabcockHall

    Interpretive spectroscopy

    Chemical shifts can be estimated on the basis of which phosphorus-containing functional group is present. The term "predict" may also imply that one provide the multiplicity. Can you show us your work so far?
  13. Do you know which amino acid residues absorb UV light? That would be how I would start my research into this topic.
  14. BabcockHall

    Is our Alkaline Phosphatase's Km value is high or low?

    It is higher than I have measured under similar conditions.
  15. Some filtration units are optimized for speed, as opposed to recovery. Microdialysis might be possible.
  16. BabcockHall

    Chemical bond during touching

    DNA can be transferred, and this can be forensically useful.
  17. DNA will also melt, meaning become single stranded, at sufficiently high temperature.
  18. BabcockHall

    Bio simple question

    What sources have you consulted and what have you learned about this topic, so far?
  19. BabcockHall

    PI-PLC inhibitor

    Try PubMed if you haven't done so already.
  20. BabcockHall

    Ketone bodies

    As far as I am aware, what you have written is true. The liver has a central role in both carbohydrate and lipid metabolism. The mitochondrial enzyme HMG-CoA synthase is a key player.
  21. BabcockHall

    sticky mass

    I hesitate to jump in without knowing more. On occasion a sticky mass can be made more tractable through trituration. Perhaps a different purification technique would be more suitable.
  22. BabcockHall

    Mg from C10H6MgN4O8

    Magnesium ions would need two electrons each to become magnesium metal. Wouldn't it be easier just to buy magnesium metal?
  23. BabcockHall

    Mg from C10H6MgN4O8

    There is a difference between a magnesium ion, which is what is present in a magnesium salt, and metallic magnesium. Do you know what it is?
  24. BabcockHall

    Muscle glycogen phoshporylase

    Nelson and Cox, Figure 15-38 also talk about liver glycogen phosphorylase as a sensor of glucose. I suspect that it is only in liver, but I am not certain. Any luck with a PubMed search?
  25. BabcockHall

    Ring structure for ketopentoses

    That should read hemiketal, not hemiacetal.