amino acids

posted by .

For the amino acid Lysine, the nitrogen with the H attached to it is not basic (since you can draw out the resonance for it). But the other nitrogen that has a double bond is not basic. Why is this?? I can draw out the resonance for the double bonded nitrogen as well.. so shouldnt it be considered nonbasic as well. can someone please explain this to me? Thanks

  • amino acids -

    I don't have an explanation for you. The site below shows the structure of lysine and I don't see any doubly bonded N atoms. Both amino groups appear to be primary to me.
    http://en.wikipedia.org/wiki/Lysine

  • amino acids -

    sorry i was referring to hisidine

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    i need help on this i don't get it MDJ OB 018: Alice looked in the looking glass and saw her image there. She invited her image to some out but the visit was short since her image found that she was starving to death and that all the …
  2. college

    How do you draw a tetrapeptide from the one letter codes(Amino acids) and also give the pI, if given the pKa values?
  3. bio

    How do you draw a tetrapeptide from the one letter codes(Amino acids) and also give the pI, if given the pKa values?
  4. Lysine Basic/Nonbasic Hydrogens

    For the amino acid Lysine, the nitrogen with the H attached to it is not basic (since you can draw out the resonance for it). But the other nitrogen that has a double bond is not basic. Why is this?
  5. histidine basic/nonbasic nitrogens

    For the amino acid histidine, the nitrogen with the H attached to it is not basic (since you can draw out the resonance for it). But the other nitrogen that has a double bond is not basic. Why is this?
  6. chemistry

    Are amino acids other than the usual 20 amino acids found in proteins?
  7. biology

    In this problem, 6 amino acids have been randomly selected from the 129 amino acids in lysozyme; they are shown as solid spheres. The remainder of the protein is shown as a cloud of tiny dots. Your task is to find out which of the …
  8. chemistry

    The skeletal structures of the two amino acids, glycine and lysine, are given below along with the values of the relevant acid dissociation constants (pKa). (b) Calculate the pI (isoelectric point) of the dipeptide, Lys-Gly, assuming …
  9. chemistry

    Lysine, an essential amino acid in the human body, contains C,H,O and N only. In an experiment, the complete combustion of 2.175 g lysine gave 3.94 g of CO2 and 1.89 g of H2O. In another reaction, the nitrogen content of 1.873 g of …
  10. science chemistry

    A basic amino acid,arginine,has a molar mass of 174g.mol^-1.it has the following percentage composition:41,38% carbon, 18,39% of oxygen,32,18% of nitrogen and 8,O5% of Hydrogen.determine the molecular formular of arginine

More Similar Questions