1. What aldehyde is formed when valine is treated with ninhydrin? A mixture of s
ID: 884631 • Letter: 1
Question
1. What aldehyde is formed when valine is treated with ninhydrin?
A mixture of seven amino acids (glycine, glutamate, leucine, lysine, alanine, isoleucine, and aspartate) is separated by chromatography. Explain why only six spots show up when the chromatographic plate is coated with ninhydrin and heated. Glutamate and aspartate both have two COOH groups and, therefore, have the same polarity. Consequently, the spots for both amino acids appear at the same place on the chromatographic plate. Therefore, the chromatographic plate has one less spot than the number of amino acids. Glycine and alanine both have short side chains (H and CH3) and, therefore, have the same polarity. Consequently, the spots for both amino acids appear at the same place on the chromatographic plate. Therefore, the chromatographic plate has one less spot than the number of amino acids Leucine and isoleucine both have C4Hg side chains and, therefore, have the same polarity. Consequently, the spots for both amino acids appear at the same place on the chromatographic plate. Therefore, the chromatographic plate has one less spot than the number of amino acids Lysine and isoleucine both have long side chains and, therefore, have the same polarity. Consequently, the spots for both amino acids appear at the same place on the chromatographic plate. Therefore, the chromatographic plate has one less spot than the number of amino acids.Explanation / Answer
2.lucine and isolucine contains C4H9 side chain
3. secondary and tertiary
4.disulfide bonds and hydrogen bonding
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