protein

Definitions

  • WordNet 3.6
    • n protein any of a large group of nitrogenous organic compounds that are essential constituents of living cells; consist of polymers of amino acids; essential in the diet of animals for growth and for repair of tissues; can be obtained from meat and eggs and milk and legumes "a diet high in protein"
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Webster's Revised Unabridged Dictionary
  • Interesting fact: Snake venom is ninety percent protein
    • n Protein (Physiol. Chem) any polymer of an amino acid joined by peptide (amide) bonds. Most natural proteins have alpha-amino acids as the monomeric constituents. All classical enzymes are composed of protein, and control most of the biochemical transformations carrie dout in living cells. They may be soluble, as casein, albumins, and other globular proteins, or insoluble (e. g. "structural proteins"), as collagen or keratin. "albumin", an older term for protein, is now used primarily to refer to certain specific soluble globular proteins found in eggs or blood serum, e.g. bovine serum albumin, the main soluble protein in teh serum of cattle, used as an enzymatically inert protein in biochemical research.In the 1913 dictionary, protein was defined as: “A body now known as alkali albumin, but originally considered to be the basis of all albuminous substances, whence its name.”
    • n Protein (Physiol. Chem) In chemical analysis, the total nitrogenous material in vegetable or animal substances, obtained by multiplying the total nitrogen found by a factor, usually 6.25, assuming most proteids to contain approximately 16 per cent of nitrogen.
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Century Dictionary and Cyclopedia
  • Interesting fact: The reason why milk is white is because it contains a protein called Casein, which is white. Milk also contains fat, which is also white
    • n protein A hypothetical substance formerly believed to be the essential nitrogenous constituent of food, and to exist in animal and vegetable albumin, fibrin, casein, and other bodies. This view has been abandoned, and at present the word is chiefly used as the first element in compounds.
    • n protein Collectively, the nitrogenous components of food, sometimes excluding and sometimes including certain gelatinoid and amidic substances which are without nutritive value or possess it in an inferior degree.
    • n protein A trade-name for a dried preparation which consists essentially of the casein of milk: sold as a food material.
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Chambers's Twentieth Century Dictionary
  • Interesting fact: Female rabbits on the other hand, reabsorb their embryo for the proteins
    • n Protein prō′tē-in the first element in any compound: formerly the supposed common radical of the group of bodies which form the most essential articles of food, albumen, fibrine, &c
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Quotations

  • Sir Peter Medawar
    Sir Peter Medawar
    “The human mind treats a new idea the way the body treats a strange protein; it rejects it.”

Etymology

Webster's Revised Unabridged Dictionary
Gr. prw^tos first: cf. prwtei^on the first place
Chambers's Twentieth Century Dictionary
Gr. prōtos, first, suffix -in.

Usage

In literature:

Clover hay is specially useful as a fodder for milk-producing animals, owing to the high protein content which it contains.
"Clovers and How to Grow Them" by Thomas Shaw
Since most proteins are rather translucent, at least when wet, they would appear much as these beings do.
"The Black Star Passes" by John W Campbell
At this stage the leaves are still green and the plants are rich in protein.
"Agriculture for Beginners" by Charles William Burkett
Avoid eating much meat and other highly protein foods.
"The Mother and Her Child" by William S. Sadler
Most nuts consist almost exclusively of proteins and fat.
"Northern Nut Growers Association Report of the Proceedings at the Twenty-Fifth Annual Meeting" by Northern Nut Growers Association
Almost any kind of food, it turned out, so long as it contained a sufficient quantity of protein.
"Legacy" by James H Schmitz
After deliberation, he decided on a high protein vegetable plate for himself, though ordinarily he liked meat.
"Mezzerow Loves Company" by Floyd L. Wallace
She'd wrapped herself around a couple pounds of high-quality protein before we had come to the casino.
"Vigorish" by Gordon Randall Garrett
We have found the mineral matter and water in milk, but not the protein.
"Ontario Teachers' Manuals: Household Management" by Ministry of Education
N: Protein (N x 6.25).
"A Study Of American Beers and Ales" by L.M. Tolman
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In poetry:

Unsmudged, thank God, my Moon still queens the Heavens
as She ebbs and fulls, a Presence to glop at,
Her Old Man, made of grit not protein,
still visits my Austrian several
"Moon Landing" by W H Auden

In news:

Castor 's main toxic protein, ricin, is so potent that a single milligram is sufficient to kill an adult.
Gluten is a protein found in foods containing wheat, barley or rye.
Nearly 30 booths set up throughout the day for people to sample and buy dairy free and peanut free food, as well as try gluten free products, which help people with Celiac 's disease because their bodies can't digest the protein in gluten.
515, with 26 grams of fat, 27 grams of protein and 597 mgs of salt.
2 cups textured soy protein.
Cevec Raises $8.5M to Commercialize Human Cell-Expression Platform for Proteins and Vaccines.
Computational Tools for Mapping Proteins to Analyze the Human Cell.
CACM Reports: Computational Tools for Mapping Proteins to Analyze the Human Cell.
Individual protein complex generates electric current.
Use small amounts of high-quality protein to make burgers, burritos, quesadillas, and stews tasty and satisfying.
Silica-Based Protein A Media Designed to Reduce Bottlenecks in Antibody-Capture Process.
Federal regulators are ordering several companies to stop selling an unproven weight loss remedy that uses protein from the human placenta.
Vehniäinen, and P. Improving broad specificity hapten recognition with protein engineering.
New method prompts reaction to protein in sperm ducts.
Protein required for stem cell-ness.
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In science:

The study of simplified random heteropolymer models may provide a useful first step toward understanding the physics of proteins.
Random Heteropolymer Dynamics
Scheraga, Monte Carlo simulation of a first - order transition for protein folding, J.
An Introduction to Monte Carlo Simulation of Statistical physics Problem
The intermediary proteins and cofactors are not depicted. (A) An mRNA chain loaded with ribosomes (green), in various stages of protein (black) production.
Ribosome recycling, diffusion, and mRNA loop formation in translational regulation
The average folding time of proteins, that is the time needed to 1The uniqueness holds at the length scale of the overall structure of the protein.
Simple models of protein folding and of non--conventional drug design
For many small proteins, it has been found [23, 24] that this state, for each protein, is characterized by a small number of well–defined contacts.
Simple models of protein folding and of non--conventional drug design
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