Definition, Betydelse & Anagram | Engelska ordet HEME

Definition av HEME

1. (biokemi) hemgrupp, hem, haem

Exempel på hur du använder HEME i en mening

• Cytochromes are redox-active proteins containing a heme, with a central iron (Fe) atom at its core, as a cofactor.
• Bilirubin (BR) (from the Latin for "red bile") is a red-orange compound that occurs in the normal catabolic pathway that breaks down heme in vertebrates.
• Most types of porphyria are inherited from one or both of a person's parents and are due to a mutation in one of the genes that make heme.
• A hemeprotein (or haemprotein; also hemoprotein or haemoprotein), or heme protein, is a protein that contains a heme prosthetic group.
• The names of the blood oxygen transporters hemoglobin, hemocyanin, and hemerythrin do not refer to the heme group (only found in globins).
• For example, iron is used in the active site of glutamyl-tRNA reductase, an enzyme needed for the formation of 5-Aminolevulinic acid which is a precursor of heme and chlorophyll.
• Porphobilinogen, a trisubstituted pyrrole, is the biosynthetic precursor to many natural products such as heme.
• In vertebrates, an essential member of the porphyrin group is heme, which is a component of hemoproteins, whose functions include carrying oxygen in the bloodstream.
• In this ballad, an elf threatens to abduct a young woman to be his lover unless she can perform an impossible task ("For thou must shape a sark to me / Without any cut or heme, quoth he"); she responds with a list of tasks that he must first perform ("I have an aiker of good ley-land / Which lyeth low by yon sea-strand").
• Stercobilin results from breakdown of the heme moiety of hemoglobin found in erythrocytes (red blood cells).
• Hereditary coproporphyria (HCP) is a disorder of heme biosynthesis, classified as an acute hepatic porphyria.
• Within organic heme molecules of red blood cells is the element iron, which oxidizes following exposure to gastric acid.
• Cytochromes P450 (P450s or CYPs) are a superfamily of enzymes containing heme as a cofactor that mostly, but not exclusively, function as monooxygenases.
• Besides siderophores, some pathogenic bacteria produce hemophores (heme binding scavenging proteins) or have receptors that bind directly to iron/heme proteins.
• Enzyme dysfunction prevents the normal production of heme and hemolytic anemia is another common symptom, though a lack of hemolysis in this disease is possible.
• plantarum are unusual in that they can respire oxygen and express cytochromes if heme and menaquinone are present in the growth medium.
• The newer and recommended tests look for globin, DNA, or other blood factors including transferrin, while conventional stool guaiac tests look for heme.
• In unimolecular chemistry, geminate recombination has first been studied in the solution phase using iodine molecules and heme proteins.
• When hemoglobin binds to O2 (oxyhemoglobin), it will attach to the Iron II (Fe2+) of heme and it is this iron ion that can bind and unbind oxygen to transport oxygen throughout the body.
• Yet, when nitrate or nitrite interact with certain components in meat, such as heme iron, amines, and amides, they can form nitroso compounds, which may contribute to the association between consumption of processed meats and higher incidence of colorectal cancer.

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