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Membrane Bohr effect

Protons that could logically be involved in a membrane Bohr effect are those present on imidazole rings coordinated to Fe or Cu in redox proteins. Removal of an electron from the metal ion could be accompanied by displacement of electrons within the imidazole, within a peptide group that is hydrogen-bonded to an imidazole, or within some other acidic group. A hypothetical example is illustrated in Eq. 18-12 in which a carboxyl group loses a proton when "handed" a second. If the transiently enolized peptide linkage formed in... [Pg.1040]

Phosphate ions are constituent parts of two universally found biopolymers, DNA and RNA. Phosphate ion is found in membrane lipids (phospholipids) and associated with the metabolism of many small molecules. The binding of dioxygen by hemoglobin is regulated by local concentrations of H+ (known as the Bohr effect), CO2 concentration, and organic phosphates such as diphos-phoglycerate (DPG), whose structure is shown in Figure 5.1. ... [Pg.192]

The carotid chemosensory discharge pattern resembled 02-Hb equilibrium eurves mimieking the receptor discharge with a Bohr effect (Fig. 1). We assumed that the reeeptor is located in the cell membrane and named it a ehromophore beeause it appeared to contain a heme group (1). [Pg.290]


See other pages where Membrane Bohr effect is mentioned: [Pg.1040]    [Pg.148]    [Pg.148]    [Pg.127]    [Pg.106]    [Pg.247]    [Pg.1040]    [Pg.148]    [Pg.148]    [Pg.127]    [Pg.106]    [Pg.247]    [Pg.549]    [Pg.1041]    [Pg.114]    [Pg.549]    [Pg.189]    [Pg.424]    [Pg.128]    [Pg.107]    [Pg.165]    [Pg.248]    [Pg.190]   
See also in sourсe #XX -- [ Pg.1040 ]

See also in sourсe #XX -- [ Pg.1040 ]

See also in sourсe #XX -- [ Pg.1040 ]




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