Dictionary > Pentapeptide

Pentapeptide

Definition
noun, plural: pentapeptides
A peptide containing five amino acids
Supplement
Peptides are biomolecules that are comprised of amino acids linked together by peptide bonds. The bond is formed between the carboxyl group of one amino acid and the amine group of another. A pentapeptide is a peptide comprised of five amino acids.
For example, the translation from an 18-base mRNA: 5′ – AUG UUC CCC AAG GGU UGA – 3′ results in the formation of a peptide with five amino acids: met – phe – pro – lys – gly *. In particular, the AUG is the codon for methionine (met) or start codon. UUC is for phenylalanine (phe). CCC is for proline (pro). AAG is for lysine (lys). GGU is for glycine (gly). UGA is a stop codon.
Example of a pentapeptide used commercially is the palmitoyl pentapeptide-4 (trademarked under the name Matrixyl). It is one of the ingredients used for making anti-wrinkle cosmetics. This compound consists of five amino acids (i.e. lysine, threonine, threonine, lysine, and serine) linked to palmitoyl. It is theorized to act as a messenger peptide that regulates cell activities, such as activating the target cell to synthesize extracellular collagen and hyaluronic acid.
Word origin: penta– (five) + peptide
See also:


You will also like...

Sigmund Freud and Carl Gustav Jung
Sigmund Freud and Carl Gustav Jung

In this tutorial, the works of Carl Gustav Jung and Sigmund Freud are described. Both of them actively pursued the way h..

Human Reproduction
Human Reproduction

Humans are capable of only one mode of reproduction, i.e. sexual reproduction. Haploid sex cells (gametes) are produced ..

river
Running Water Freshwater Communities

This tutorial introduces flowing water communities, which bring new and dithering factors into the equation for possible..

Early Mammals on Earth
Early Mammals on Earth

The Earth's ecosphere was rapidly changing and throwing up a wide range of ecological niches that new adaptive organisms..

Geological Periods
Geological Periods

Geological periods is a study guide that cites the different geological periods on Earth's timeline. Each has a brief ov..

Types and Causes of Brain Damage
Types and Causes of Brain Damage

This tutorial describes the different types and causes of brain damage. Find out how genetics, physical injury, lack of ..

Related Articles...

No related articles found

See all Related Topics