Polypeptide: Difference between revisions
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Polypeptides, are chains of [[Amino acids|amino acids]] joined by peptide bonds. Polypeptides can be of any size ranging from just a few amino acids in length to the amounts of [[Protein|proteins]] and [[Enzyme|enzyme]] which can contain hundreds and even thousands of amino acids. The sequence of amino acids is encoded by our [[DNA|DNA]], each three base pair sequence, called a [[Codon|codon]], codes for a specific amino acid. | Polypeptides, are chains of [[Amino acids|amino acids]] joined by peptide bonds. Polypeptides can be of any size ranging from just a few [[Amino acids|amino acids]] in length to the amounts of [[Protein|proteins]] and [[Enzyme|enzyme]] which can contain hundreds and even thousands of [[Amino acids|amino acids]]. The sequence of [[Amino acids|amino acids]] is encoded by our [[DNA|DNA]], each three base pair sequence, called a [[Codon|codon]], codes for a specific [[Amino acids|amino acid]]. [[Peptide bond|Peptide bonds]] are formed by a condensation reaction between the [[Amino group|amino group]] (NH<sub>2</sub><sub></sub>) of one [[Amino acids|amino acid]] and the [[Carboxyl group|carboxyl group]] (COOH) of another [[Amino acids|amino acid]] <ref>http://cmgm.stanford.edu/biochem/biochem201/Slides/Protein%20Structure/</ref>. | ||
[[Image: | [[Image:Peptide Bond Formation.jpg]]<ref>http://cmgm.stanford.edu/biochem/biochem201/Slides/Protein%20Structure/Forming%20Peptide%20Bond.JPG</ref><br> | ||
< | A polypeptide is a [[Peptide|peptide]] which on [[Hydrolysis|hydrolysis]] yields more than two [[Amino acids|amino acids]] called tripeptides, tetrapeptides, etc, according to the number of amino acids contained <ref>Biology Online, 2006</ref>. | ||
<references /> | === References: === | ||
<references /> | |||
Latest revision as of 19:37, 20 November 2011
Polypeptides, are chains of amino acids joined by peptide bonds. Polypeptides can be of any size ranging from just a few amino acids in length to the amounts of proteins and enzyme which can contain hundreds and even thousands of amino acids. The sequence of amino acids is encoded by our DNA, each three base pair sequence, called a codon, codes for a specific amino acid. Peptide bonds are formed by a condensation reaction between the amino group (NH2) of one amino acid and the carboxyl group (COOH) of another amino acid [1].
A polypeptide is a peptide which on hydrolysis yields more than two amino acids called tripeptides, tetrapeptides, etc, according to the number of amino acids contained [3].
