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Hemoglobin (haemoglobin, [a] Hb or Hgb) is a protein containing iron that facilitates the transportation of oxygen in red blood cells. Almost all vertebrates contain hemoglobin, [ 3 ] with the sole exception of the fish family Channichthyidae . [ 4 ]
A:Normal red blood cells are shown flowing freely in a blood vessel on the top of the diagram. The inset image shows a cross-section of a normal red blood cell with normal hemoglobin. B:Demonstrates abnormal, sickled red blood cells blocking blood flow in a blood vessel (vaso-occlusive crisis). The inset image shows a cross-section of a sickle ...
Ribbon diagram of myoglobin bound to haem (sticks) and oxygen (red spheres) (Ribbon diagrams, also known as Richardson diagrams, are 3D schematic representations of protein structure and are one of the most common methods of protein depiction used today. The ribbon depicts the general course and organisation of the protein backbone in 3D and ...
0.5-1.5% total Hb smokers, 1-2 packs/day 4-5% total Hb smokers, 2 packs/day 8-9% total Hb toxic >20% total Hb lethal >50% total Hb Carcinoembryonic antigen <2.5 × 10 −9: beta-Carotene: Vitamin A dimer 3-25 × 10 −7: Carotenoids: Antioxidant 2.4-23.1 × 10 −7: Cephalin: 3-11.5 × 10 −4: 0-1 × 10 −4: Ceruloplasmin: 1.5-6 × 10 −4 ...
Hemoglobin (Hb) is the primary vehicle for transporting oxygen in the blood. Each hemoglobin molecule has the capacity to carry four oxygen molecules. These molecules of oxygen bind to the globin chain of the heme prosthetic group. [1] When hemoglobin has no bound oxygen, nor bound carbon dioxide, it has the unbound conformation (shape). The ...
Haemoglobin (Hb) Myoglobin (Mb) Neuroglobin: a myoglobin-like haemprotein expressed in vertebrate brain and retina, where it is involved in neuroprotection from damage due to hypoxia or ischemia. [11] Neuroglobin belongs to a branch of the globin family that diverged early in evolution. Cytoglobin: an oxygen sensor expressed in multiple tissues ...
Binding of oxygen to a heme prosthetic group. Heme (American English), or haem (Commonwealth English, both pronounced /hi:m/ HEEM), is a ring-shaped iron-containing molecular component of hemoglobin, which is necessary to bind oxygen in the bloodstream.
Hemoglobinopathy is a kind of genetic defect that results in abnormal structure of one of the globin chains of the hemoglobin molecule. [35] Hemoglobinopathies are inherited single-gene disorders; in most cases, they are inherited as autosomal co-dominant traits. [36] Hemoglobinopathies imply structural abnormalities in the globin proteins ...