The most basic amino acid among the following is:a)Tyrosineb)Methionin...
Basic Amino Acid: Arginine
Amino acids are the building blocks of proteins. There are 20 different types of amino acids commonly found in proteins. Out of these, some amino acids are basic, some are acidic, and some are neutral.
Basic amino acids are those that have a basic or alkaline side chain in their chemical structure. These amino acids have a positive charge at neutral pH (pH 7) due to the presence of an amino group (-NH2) in their structure.
Among the given options, the most basic amino acid is Arginine.
Explanation:
Arginine has a guanidine group (-NH-C(NH2)-NH2) in its side chain, which makes it a basic amino acid. This group has a pKa value of 12.5, which means that at neutral pH, the guanidine group will be mostly protonated (+NH3) and have a positive charge.
Methionine has a sulfur-containing side chain, but it is not basic in nature. Tyrosine has a hydroxyl group (-OH) in its side chain, which is not basic either. Glutamine has a neutral side chain and is not basic.
Hence, among the given options, Arginine is the most basic amino acid.
The most basic amino acid among the following is:a)Tyrosineb)Methionin...
Arginine is more basic amino acid because its positive charge is stabilized by resonance.