# Pentamer

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> Source: https://en.wikipedia.org/wiki/Pentamer
> Source revision: 1277400522
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{{Short description|Molecule made of five monomers}}
A '''pentamer''' is an entity composed of five [subunit](/source/subunit_(disambiguation))s.

In chemistry, it applies to molecules made of five [monomer](/source/monomer)s.

In biochemistry, it applies to macromolecules, particularly [pentameric protein](/source/pentameric_protein)s, made of five protein sub-units.

In microbiology, a pentamer is one of the proteins that compose the polyhedral protein shell that encloses the bacterial micro-compartments known as [carboxysome](/source/carboxysome)s.

In immunology, an [MHC pentamer](/source/MHC_multimer) is a reagent used to detect antigen-specific CD8+ [T cell](/source/T_cell)s.

==See also==
{{commons category|Pentamers}}

* [penta](/source/Number_prefix) prefix
* [-mer](/source/-mer) suffix
* [Pentamerism](/source/Symmetry_in_biology)
* ''[Pentamerous Metamorphosis](/source/Pentamerous_Metamorphosis)'', an album by Global Communication
* [Pentamery (botany)](/source/Merosity), having five parts in a distinct whorl of a plant structure
* Pentamerous can also refer to animals, such as [crinoids](/source/crinoids)

Category:Oligomers

{{polymer-stub}}

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Adapted from the Wikipedia article [Pentamer](https://en.wikipedia.org/wiki/Pentamer) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Pentamer?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.