Characteristics and properties of amino acids

Principle of Polarity:
The greater the electro negativity difference between atoms in the bond the most polar partial negative charge is the most electronegative atom the other slightly positive

No polar side chains:

side chains of pure hydrocarbon alkyl groups (alkanet branches) or aromatic (benzene rings) is non-polar Examples include valise almandine leonine isoleucine phenylalanine

The number of alkyl group also affects the polarity The alkyl groups more non-polar amino acids This effect is made more non-polar valise for almandine valise leonine is more than the non-polar

Acid - Base Properties of amino acids:

Acid Side Chains

If the side chains containing functional groups are acids amino acids all produce acid solution Usually the solution is nearly neutral amino acid groups and amino groups of the roots to neutralize the basic amino acids from each other in zwitterionic it If the structure contains two groups of amino acid and an amino group there is a net acid producing effects These two amino acids aspartic acid and glutei this

Basic side chains:
If the side chain containing an amine functional group an amino acid to produce the basic solution because the extra amino groups are not neutralized by acid groups amino acids having basic side chains: lysine argentine and histamine

Amino acids with amide side chain does not produce basic solutions i.e. asparagines and glutamine
Neutral Side Chains
Since amino acids are both amine and acid groups which were neutralized in zwitterionic that unless there is a neutral amino acid added acid or base on the side chain If not present then all neutral amino acids

Amino acids with amide side chain does not produce basic solutions i.e. asparagines and glutamine You have to look carefully at the functional groups due to a sound start amide amine but has the carbon double bond oxygen which changes ownership Amide is not critical

Although tryptophan is an amino group as part of a ring of five members the electron attractive effect of the second ring system does not allow nitrogen to act as a basis for attracting hydrogen ions