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15458 Ensembl ENSG00000110169 ENSMUSG00000030895 UniProt P02790 Q91X72 RefSeq (mRNA) NM_000613 NM_017371 RefSeq (protein) NP_000604 NP_059067 Location (UCSC) Chr 11: 6.43 – 6.44 Mb Chr 7: 105.24 – 105.25 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Hemopexin (or haemopexin ; Hpx ; Hx), also known as beta-1B-glycoprotein, is a glycoprotein that in humans is encoded by the HPX ...
Hemoglobin D has the basic structure and composition of normal adult hemoglobin. It is a globular protein containing prosthetic (non-protein) group called heme. There are four individual peptide chains, namely two α- and two β-subunits, each made of 141 and 146 amino acid residues, respectively.
A hemoglobin test measures the amount of hemoglobin in your blood. If a hemoglobin tests shows that a person's levels are below normal, it means they have a low red blood cell count, which is known as anemia. If the test shows higher levels than normal, it means they have hemoglobinemia. [citation needed] The normal range for hemoglobin is:
Unstable hemoglobin variants are mutations that cause the hemoglobin molecule to precipitate, spontaneously or upon oxidative stress, resulting in hemolytic anemia. Precipitated, denatured hemoglobin can attach to the inner layer of the plasma membrane of the red blood cell (RBC) forming Heinz bodies , leading to premature destruction of the ...
These components comprise hemoglobin and others. [3] At this stage, the hemoglobin is called free hemoglobin. [3] Free hemoglobin (also called naked hemoglobin) is the un-bound hemoglobin that is not enclosed in the red blood cell. The naked hemoglobin is devoid of its anti-oxidant sentries that are normally available within the RBC. [5]
Hemoglobin A (HbA), also known as adult hemoglobin, hemoglobin A1 or α 2 β 2, is the most common human hemoglobin tetramer, accounting for over 97% of the total red blood cell hemoglobin. [1] Hemoglobin is an oxygen-binding protein, found in erythrocytes , which transports oxygen from the lungs to the tissues. [ 2 ]
Hemoglobinuria is a condition in which the oxygen transport protein hemoglobin is found in abnormally high concentrations in the urine. [1] The condition is caused by excessive intravascular hemolysis , in which large numbers of red blood cells (RBCs) are destroyed, thereby releasing free hemoglobin into the plasma . [ 2 ]
As a result, an electron from the hemoglobin is transferred to an oxygen molecule, which creates a reactive oxygen species (ROS) that can cause severe cell damage leading to premature cell lysis. [7] Damaged cells are cleared by macrophages in the spleen , where the precipitate and damaged membrane are removed, leading to characteristic " bite ...