No. But hydrogen bond can be formed between two carboxyl groups.
Only one ionic bond: in the carboxyl group ( COOH), between H+ and -OOC-C6H5
Amino acids are held together by peptide bonds, which are covalent bonds formed through dehydration synthesis or condensation reactions. It forms between the amino terminus of one amino acid's backbone and the carboxyl terminus of another amino acid's backbone.
The covalent bonds between amino acids are called peptide bonds. It is a bond between the carboxyl group of one amino acid and the amino group of another amino acid. Amino acids are bonded through condensation reactions, which produces a water molecule.
A peptide bond is a covalent chemical bond formed between a molecule from a carboxyl group of one molecule or more molecule reacts with the amino group of the other molecule. This is called a dehydration synthesis reaction.
Why does group 4A elements tend to form covalent bonds rather than ionic bonds? 
Dehydration synthesis is the process that produces peptide bonds. A peptide bond is a covalent chemical bond formed between a carboxyl group and an amino group.
Only one ionic bond: in the carboxyl group ( COOH), between H+ and -OOC-C6H5
The nucleotides are linked by peptide bonds - covalent bonds between the carbon in the carboxyl group and the nitrogen in the amino group. The double helix is formed by hydrogen bonds between the hydrogens and oxygens of two strands of nucleotides.
Amino acids are held together by peptide bonds, which are covalent bonds formed through dehydration synthesis or condensation reactions. It forms between the amino terminus of one amino acid's backbone and the carboxyl terminus of another amino acid's backbone.
The covalent bonds between amino acids are called peptide bonds. It is a bond between the carboxyl group of one amino acid and the amino group of another amino acid. Amino acids are bonded through condensation reactions, which produces a water molecule.
A peptide bond is a covalent chemical bond formed between a molecule from a carboxyl group of one molecule or more molecule reacts with the amino group of the other molecule. This is called a dehydration synthesis reaction.
Covalent Bonds.
Why does group 4A elements tend to form covalent bonds rather than ionic bonds? 
The covalent bonds between amino acids are called peptide bonds. It is a bond between the carboxyl group of one amino acid and the amino group of another amino acid. Amino acids are bonded through condensation reactions, which produces a water molecule.
Two functional groups are found in all amino acids. These functional groups are the amino group (-NH2) and the carboxyl group (-COOH). The hydrogen atom of the carboxyl group can be broken off quite easily; this gives amino acids their acidic properties.
The links in a protein (amino acid) chain are called peptide bonds. These are any combination of amino acids in which the amino group of one acid is united with the carboxyl group of another.
An amino acid always has an amino group and a carboxyl group. The amine group of one amino acid is capable of forming a peptide bond with the carboxyl group of another amino acid.