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protein    音標拼音: [pr'ot,in]
n. 蛋白質
a. 蛋白質的

蛋白質蛋白質的

protein
n 1: 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"

Protein \Pro"te*in\, n. (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.
[Webster 1913 Suppl.]


Proteid \Pro"te*id\, n. [Gr. prw^tos first.] (Physiol. Chem.)
An older, imprecise term replaced by {{protein}}.

Note: Proteid was defined in the 1913 Webster as "One of a
class of amorphous nitrogenous principles, containing,
as a rule, a small amount of sulphur; an albuminoid, as
blood fibrin, casein of milk, etc. Proteids are present
in nearly all animal fluids and make up the greater
part of animal tissues and organs. They are also
important constituents of vegetable tissues. See 2d
Note under {Food}." -- {Pro"te*id}, a.

Syn: protein.
[1913 Webster PJC]

{Defensive proteid} (Physiol. Chem.), one of a class of
proteid substances, present in some animal tissues and
fluids, that make the body immune to certain infectious
diseases by destroying or rendering inactive the toxic
products of bacterial growth; -- this is an older term
replaced by more precise modern immunological concepts
such as {antibody} and {immunoglobulin}. [archaic]
[Webster 1913 Suppl. PJC]


Protein \Pro"te*in\, n. [Gr. prw^tos first: cf. prwtei^on the
first place.] (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.

Note: 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."
[1913 Webster PJC]

{Protein crystal}. (Bot.) See {Crystalloid}, n., 2.
[1913 Webster]


macromolecule \mac`ro*mol"e*cule\, n. (Chem., Biochem.)
A very large molecule, especially a polymer having from
hundreds to many thousands of atoms, such as {DNA}, {RNA},
{protein}, {polysaccharide}, {polyethylene}, {polycarbonate},
etc.
[PJC]

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  • Protein shakes: Good for weight loss? - Mayo Clinic
    But protein shakes aren't a magic way to lose weight Some studies find that consuming a higher than usual amount of protein in your diet may offer benefits For example, eating or drinking products that are high in protein may help you lower body fat, keep lean muscle, feel full and lose weight But evidence is limited
  • C-reactive protein test - Mayo Clinic
    C-reactive protein, also called CRP, is a protein made by the liver The level of CRP increases when there's inflammation in the body A simple blood test can check your C-reactive protein level A high-sensitivity C-reactive protein test, also called hs-CRP test, is more sensitive than a standard C-reactive protein test
  • High blood protein When to see a doctor - Mayo Clinic
    If a healthcare professional discovers high blood protein during a test, more tests can help find if there is a condition that is causing it A total protein test may be done Other, more-specific tests, including serum protein electrophoresis (SPEP), can help find the exact source, such as the liver or bone marrow
  • Different types of COVID-19 vaccines: How they work
    Once the protein pieces are made, your cells break down the instructions and get rid of them The mRNA in the vaccine doesn't enter the nucleus of the cell, where DNA is kept Both the Pfizer-BioNTech and the Moderna COVID-19 vaccines use mRNA
  • Renal diet for vegetarians: What about protein? - Mayo Clinic
    Protein High-quality protein sources for vegetarians include lentils, seeds, tofu and whole grains Follow your dietitian's or healthcare professional's recommendations on protein choices and amounts Phosphorus If your body's phosphorus level is high, it may help to take in fewer foods and drinks that have phosphorus added to them
  • Protein in urine (proteinuria) When to see a doctor - Mayo Clinic
    Because protein in urine can be temporary, you may need to repeat a urine test first thing in the morning or a few days later You also may need to do a 24-hour urine collection for lab testing If you have diabetes, your doctor may check for small amounts of protein in urine — also known as microalbuminuria (my-kroh-al-BYOO-mih-NU-ree-uh
  • Nutrition for kids: Guidelines for a healthy diet - Mayo Clinic
    Protein Choose seafood, lean meat and poultry, eggs, beans, peas, soy products, and unsalted nuts and seeds Fruits Encourage your child to eat a variety of fresh, canned, frozen or dried fruits Look for canned fruit that says it's light or packed in its own juice This means it's low in added sugar
  • Pregnancy diet: Focus on these essential nutrients - Mayo Clinic
    Protein is crucial for the growth of your unborn baby, also called a fetus How much you need: 71 grams (g) a day Good sources: Lean meat, poultry, seafood and eggs are great sources of protein Other options include beans and peas, nuts, seeds, and soy products





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