What is a peptide?
Peptides (proteins) are present in every living cell and possess a variety of biochemical activities.
Some
peptides are synthesized in the ribosomes of a cell by translation of mRNA (messenger RNA) into
hormones and signaling molecules...
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What is a peptide?
Peptides (proteins) are present in every living cell and possess a variety of biochemical activities.
Some
peptides are synthesized in the ribosomes of a cell by translation of mRNA (messenger RNA) into
hormones and signaling molecules for example.
Other peptides are assembled (rather then synthesized)
and become enzymes with a vast variety of functions.
Peptides also make up the structure of receptors
which await binding of hormones & signaling molecules.
A peptide is a molecule created by joining two or more amino acids.
In general if the number of amino
acids is less than fifty, these molecules are called peptides, while larger sequences are referred to as
proteins.
So peptides can be thought of as tiny proteins.
They are merely strings of amino acids.
Raw Constituents of Peptides (Amino Acids)
Amino acids are small molecules made up of atoms.
As part of their structure they posses a grouping of
a Nitrogen (N) atom bonded to two Hydrogen (H) atoms.
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