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Answer for the clue "Consist of long chains of polypeptides ", 7 letters:
protein

Alternative clues for the word protein

Word definitions for protein in dictionaries

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1844, from French protéine , coined 1838 by Dutch chemist Gerhard Johan Mulder (1802-1880), perhaps on suggestion of Berzelius, from Greek proteios "the first quality," from protos "first" (see proto- ) + -ine (2).\n \nOriginally a theoretical substance ...

Wikipedia Word definitions in Wikipedia
Proteins are essential nutrients for the human body . They are one of the building blocks of body tissue, and can also serve as a fuel source. As a fuel, proteins provide as much energy density as carbohydrates : 4 kcal (17 kJ ) per gram; in contrast, lipids ...

WordNet Word definitions in WordNet
n. 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 ...

Usage examples of protein.

But he is not ready to tell Botkin or Koss the wildest of his suspicions: the double helix somehow codes not only for its own messenger, but also for the elusive adaptor, the ribosome assembly line, and all the enzymes needed to recognize the adaptor, affix the amino acids, promote the growing chain, and trim the finished proteins.

More properly known as gelatin hydrolysate, it is also used in shampoos and conditioners, lipsticks, protein drinks, arthritis relief formulas and many other products that Joe will never touch the rest of his life.

In short, I created a protein macromolecule that can be set on a definite course of development, as an alarm clock can be set.

One of the aims of the maltster is, therefore, to break down the protein substances present in barley to such a degree that the wort has a maximum nutritive value for the yeast.

Another bonus: Fish oil and fish protein have been shown to regenerate the membrane of the meniscus, which is important if you suffer a painful tear, or have chronic meniscus discomfort.

Now called metarhodopsin II, the protein sticks to another protein, called transducin.

No metabolic activity was detected in the Ceraunius forms, but electron microscopy reveals what appear to be cell walls, and RNA protein fragments within the forms.

A special cocktail of granulocytes, monocytes, lymphocytes and soluble proteins.

We must imagine the morphogenesis of deep structures, built into our minds, for coding out, like proteins, the parts of speech.

The protein roll bounced away and fetched up against the Parametric Laser housing.

Isoflavone-rich soy protein isolate attenuates bone loss in the lumbar spine of perimenopausal women.

In the normal individual, the amino acid phenylalanine, an essential constituent of proteins, is routinely converted in part to the related amino acid tyrosine, also an essential constituent of proteins.

There are a number of membrane proteins which can be phosphorylated in this way, some postsynaptic, some presynaptic, and the enzymes responsible for catalysing the phosphorylation are known collectively as protein kinases.

Ali, S M, Bullock, S, and Rose, S P R Phosphorylation of synaptic proteins in chick forebrain: changes with development and passive avoidance training.

The individual particles were extremely small, subject to damage from cosmic rays, photochemical decay, dehydration of their protein chains, and other environmental factors.