Question

why alpha amino acid are known as substituted methanes

Answer 1

Alpha amino acid are known as substituted methanes because,Amino acids are substituted methanes because they contain four substituent groups, hydrogen; carboxyl group, amino group and a variable group ®; these substituents are present on the a-carbon and hence, are called a-amino acids.


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Answer 2

Alpha amino acid are known as substituted methane

Explanation:

• Amino acids have an amino group and on the alpha carbon while the carboxyl group are present on the terminal end.
• It has side chain R which is substituted by methane. Some amino acids in which hydrogen atom is replaced by methane such amino acids are known as substituted methane.
• For example, Lysine amino acid. Lysine is basically alanine with a propylamine substituent on theβcarbon. The ε-amino group has a significantly higher pKa (about 10.5 in polypeptides) than does the α-amino group.

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