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About BabcockHall

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    bioorganic chemistry
  1. DNA / RNA

    There are many minor bases (for example pseudo-uracil), although I doubt that one wold be expected to know their exact number.
  2. Methylmercury

    That is hydrolysis of a protein into amino acids, and it is a pretty sluggish reaction. Typically it is performed at 110 °C in constant boiling HCl for 24 hours on a protein to effect complete hydrolysis. I would assume that "dilute" hydrochloric means 1 M, but I am not sure.
  3. Methylmercury

    I don't see why the HCl will destroy the amino acids, but I am doubtful about how appetizing the fish would be after this treatment.
  4. When I see the word stimulate, I would not necessarily associate it with either method of regulation that you outline; in other words, I would in general be open to the possibility that either or both might be occurring. In this specific we would need to identify which protein phosphatase this was, in order to answer the question. I believe that protein phosphatase 2A is the enzyme in this case and that xylulose 5-phosphate plays a role in its regulation. I would also like to mention GL protein, which is known to be able to complex to protein phosphatase-1.
  5. Anaerobic glycolysis

    I would define a fermentation as any anaerobic catabolism of a carbohydrate, but my definition may not be universal. A pathway that included glycolysis plus something to regenerate the NAD and bring pyruvate back to the same oxidation level as glucose would qualify as a fermentation in my mind. I can think of two commonly encountered examples.
  6. secondary alcohol substrates

    I might be tempted to quibble a bit with the answer, because even the one substance that is clearly unlike the others is sometimes used as a solvent in one reaction.
  7. A yellow alcohol?

    People more experienced in IR should probably guide you, but (going on memory here) the peaks in the range 1450-1600 are suggestive of an aromatic ring, and it might be possible to tease out some information regarding the substitution pattern. I am not sure about the nitro group.
  8. A yellow alcohol?

    There is more going on in the IR besides the OH stretch. Can you identify any other functional groups?
  9. Standard free energy of glycolysis

    See Table 14-2 in Nelson and Cox's Principles of Biochemistry for the values for the individual reactions.
  10. Standard free energy of glycolysis

    Biochemistry often use a different standard state than other branches of chemistry, one in which the concentration of protons is taken to be 1 x 10-7 M. The standard free energy of glycolysis can be found in many biochemistry textbooks. However, as a learning exercise, I don't see anything wrong with your working it out for yourself.
  11. Number of equivalents

    Where did you read this? Some context might be beneficial.
  12. Standard free energy

    At pH 0 (where protons are 1 M in concentration) ATP, ADP, and Pi will all have very different protonation states than they do at pH 7. I am not sure what the value of deltaG° will be, but I am fairly certain that it will be different.
  13. Kd for a compound.

    Start by defining in words or with an equation what the distribution coefficient is.
  14. Glucose reactions

    Why are you searching for such a list? Enzymes are catalysts; therefore, I don't know what you second paragraph means.
  15. How Fructose and Glucose are Stored "Normal Roles for Dietary Fructose in Carbohydrate Metabolism" "The liver is the major site for fructose metabolism."