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protein definition

pro·tein (prō′tēn′, prō′tē in)

noun

any of a large class of complex polymers consisting of long chains of polypeptides often bonded with nucleic acids, lipids, etc.: proteins are found in all cells, are essential to the diet of animals, are the basic components of cartilage, hair, skin, etc., and often function as enzymes, hormones, or antibodies

Etymology: Ger < Fr protéine < Gr prōteios, prime, chief < prōtos, first (see proto-): from being a chief constituent of plant and animal bodies

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

Alternate definitions:

medical protein definition - medical

protein Synonyms

protein

n.

proteid, amino acid, nitrogenous matter.


Webster's New World Roget's A-Z Thesaurus Copyright © 1999 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

protein Usage Examples

Converse of object

  • encode: The gene that underlies this disorder encodes a muscle protein called dystrophin.

Preposition: in

  • urine: There are sticks which doctors use to find out whether there is any protein in urine.

Adjective modifier

  • fluorescent: Specific gene activity can be monitored using markers related to green fluorescent protein ( GFP ).

Modifies a noun

  • kinase: These and other protein kinases are important in signal transduction pathways.

Noun used with modifier

  • prion: Research on human tissues has confirmed that people of all genetic types can have the rogue prion protein responsible for the disease.
protein usage examples (more)

The word usage examples above have been gathered from various sources to reflect current and historical usage. They do not represent the opinions of YourDictionary.com.

protein quotes

The protein of our cultural imagination.

-Hughes, Robert Studley Forrest

protein quotes (more)

Webster's New World Dictionary of Quotations Copyright © 2005 by Chambers Harrap Publishers Ltd. All rights reserved. Published by Wiley, Hoboken, NJ. Used by arrangement with John Wiley & Sons, Inc.

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MLA Style

"protein." Webster's New World College Dictionary. 2009

  • Your Dictionary. 5 July 2009
  • <www.yourdictionary.com/protein>

APA Style

protein. (2009). In Webster's New World College Dictionary

  • Retrieved July 5th, 2009, from www.yourdictionary.com/protein

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