Αποτελέσματα Αναζήτησης
Sickle cell disease (SCD) is a monogenetic disorder due to a single base-pair point mutation in the β-globin gene resulting in the substitution of the amino acid valine for glutamic acid in the β-globin chain.
Abnormal hemoglobin in sickle cell hemoglobinopathies: The sickle hemoglobin (HbS) occurs as a single nucleotide mutation (GAG/GTG) in the sixth codon of the β-globin gene. This missense mutation results in the substitution of valine for the glutamic acid at the sixth residue of the β-globin chain.
4 Σεπ 2023 · The sickle cell mutation occurs when negatively charged glutamate is replaced by a neutral valine at the sixth position of the beta-globin chain. The mutation is transmitted via Mendelian genetics and is inherited in an autosomal codominant fashion. A homozygous mutation leads to the severest form of SCD, ie, SCA- also called HBSS disease.
25 Φεβ 2024 · Sickle cell trait is a genetic condition that results when an individual inherits a gene for normal hemoglobin (A) and a gene for sickle hemoglobin (S) that results in the genotype (AS). Conversely, sickle cell disease occurs when an individual inherits 2 abnormal sickle genes (SS).
15 Σεπ 2003 · Diagnosis/testing. SCD encompasses a group of disorders characterized by the presence of at least one hemoglobin S allele (HbS; p.Glu6Val in HBB) and a second HBB pathogenic variant resulting in abnormal hemoglobin polymerization. Hb S/S (homozygous p.Glu6Val in HBB) accounts for the majority of SCD.
25 Ιουν 2024 · Sickle hemoglobin (Hb S, alpha2:beta S 2) is a result of a specific point mutation in the gene HBB, which encodes hemoglobin beta chains. It substitutes valine for the normal glutamic acid at the seventh amino acid (HBB p.glu7val). (See 'Sickle hemoglobin' below.)
7 Μαΐ 2019 · Sickle cell disease (SCD) is a monogenetic disorder due to a single base-pair point mutation in the β-globin gene resulting in the substitution of the amino acid valine for glutamic acid...
