Question

生物化学问题解答，详细解答

For the following question, assume that the pKa of the alpha-amino group = 10. What would be the NH3+:NH2 ratio of the alpha-amino group of tryptophan at pH 7?
What would be the charge of the imidazole side chain of histidine at pH 6? Assume the pKa of the side chain is 6.0.
For the following question, assume that the pKa of the alpha-amino group = 10 and the pKa of the alpha-carboxyl group = 2.0. What would be the net charge of isoleucine at pH 7.0?
For the following question, assume that the pKa of the alpha-amino group =10 and the pKa of the alpha-carboxyl group = 2.0. What would be the net charge of tyrosine at pH 3.0?
A 0.8 M solution of a weak acid solution has a pH of 3. What is the pKa?
Which amino acid will break an alpha-helical secondary structure?

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Answer 1

对于下面的问题，假设的α-氨基基团的pKa = 10。NH3 +：NH2在pH 7的色氨酸的α-氨基集团中的比例是多少？
pH 6的组氨酸的咪唑侧链的电荷是多少？假设侧链的pKa值是6。
对于这样的问题，假设α-氨基基团PKa= 10，α-羧基基团的pKa = 2。pH 7的异亮氨酸的净电荷是多少?
对于下面的问题，假设α-氨基基团PKa= 10，α-羧基基团的pKa = 2。PH 3的酪氨酸的净电荷是什么
一份0.8M弱酸的溶液，PH值为3。PKA是多少？
哪种氨基酸会破坏α-螺旋二级结构？

追问

不是翻译, 是回答

追答

我太马虎了。这个不会