词汇 | globin |
释义 | BETA Examples of globinglobin isn’t in the Cambridge Dictionary yet. You can help! Mutations in -globin can also affect disease severity. Haemoglobinopathies are exemplified by disorders resulting from mutations in the genes encoding the globin chains that make up haemoglobin. This is associated with late fetal death after the embryonic -globin to fetal -globin switch occurs. Similarly, an individual with duplication of -genes, or one with a dominant -thalassaemia mutation, may present with a -thalassaemia intermedia phenotype but have only one mutant -globin allele. Nuclear scaffold attachment sites in the human globin gene complexes. The name of the thalassaemia re-ects the globin chain whose synthesis is either diminished or non-existent. How different amino acid sequences determine similar protein structures : the structure and evolutionary dynamics of the globins. In each syndrome, the severity of symptoms correlates with the deficiency of globin chains relative to the -globin chain. In the absence of the complementary globin chains, the excess unbound - or -globin protein aggregates and precipitates, damaging cell membranes and leading to premature destruction. From various lines of evidence, most workers have assumed that globin degradation products are the most important source of amino acids for the parasite. More important is the deleterious effect of the globin chain imbalance - a relative excess of unbound - or -globin protein in the erythroid cells. They represent the most common single-gene disorders, with 4.83% of the world population carrying globin gene variants. |
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