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  2. Hemoglobin - Wikipedia

    en.wikipedia.org/wiki/Hemoglobin

    Even though carbon dioxide is carried by hemoglobin, it does not compete with oxygen for the iron-binding positions but is bound to the amine groups of the protein chains attached to the heme groups. The iron ion may be either in the ferrous Fe 2+ or in the ferric Fe 3+ state, but ferrihemoglobin (methemoglobin) (Fe 3+) cannot bind oxygen. [50]

  3. Haldane effect - Wikipedia

    en.wikipedia.org/wiki/Haldane_effect

    Thus, the Haldane effect describes the ability of hemoglobin to carry increased amounts of carbon dioxide (CO 2) in the deoxygenated state as opposed to the oxygenated state. Vice versa, it is true that a high concentration of CO 2 facilitates dissociation of oxyhemoglobin, though this is the result of two distinct processes (Bohr effect and ...

  4. Carbaminohemoglobin - Wikipedia

    en.wikipedia.org/wiki/Carbaminohemoglobin

    On the other hand, in the lungs, there is a lower amount of partial pressure of carbon dioxide, which promotes the separation of carbon dioxide from hemoglobin. pH: The Bohr effect outlines how the binding and release of oxygen and carbon dioxide by hemoglobin are influenced by fluctuations of pH in the blood.

  5. Oxygen–hemoglobin dissociation curve - Wikipedia

    en.wikipedia.org/wiki/Oxygenhemoglobin...

    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 binding of the first oxygen molecule induces change in the shape of the ...

  6. Respiratory pigment - Wikipedia

    en.wikipedia.org/wiki/Respiratory_pigment

    Vertebrates use a tetrameric hemoglobin, carried in red blood cells, to breathe. There are multiple types of hemoglobin that have been found in the human body alone. Hemoglobin A is the “normal” hemoglobin, the variant of hemoglobin that is most common after birth. Hemoglobin A2 is a minor component of hemoglobin found in red blood cells.

  7. Bohr effect - Wikipedia

    en.wikipedia.org/wiki/Bohr_effect

    Hemoglobin's oxygen binding affinity (see oxygen–haemoglobin dissociation curve) is inversely related both to acidity and to the concentration of carbon dioxide. [1] That is, the Bohr effect refers to the shift in the oxygen dissociation curve caused by changes in the concentration of carbon dioxide or the pH of the environment.

  8. Blood cell - Wikipedia

    en.wikipedia.org/wiki/Blood_cell

    Red blood cells or erythrocytes pors carry oxygen and collect carbon dioxide through the use of hemoglobin. [2] Hemoglobin is an iron-containing protein that gives red blood cells their color and facilitates transportation of oxygen from the lungs to tissues and carbon dioxide from tissues to the lungs to be exhaled. [3]

  9. Blood - Wikipedia

    en.wikipedia.org/wiki/Blood

    The decreased binding to carbon dioxide in the blood due to increased oxygen levels is known as the Haldane effect, and is important in the transport of carbon dioxide from the tissues to the lungs. A rise in the partial pressure of CO 2 or a lower pH will cause offloading of oxygen from hemoglobin, which is known as the Bohr effect.