Hemoglobin Bethesda (β145 histidine) is one of the two mutants known to affect the penultimate hemoglobin tyrosines. The result of this substitution is extreme disorganization of the oxygenation function of the molecule. Red cells containing 45% Hb Bethesda and 55% Hb A have increased oxygen affinity but, paradoxically, a normal Bohr effect. As is usually seen with other hemoglobins with increased oxygen affinity, Hb Bethesda clinically is manifest in heterozygotes by erythrocytosis. Red cell production in affected individuals is erythropoietin dependent. The reciprocal interdependence of oxygen delivery and effective erythropoiesis was documented by alterations in erythropoietin excretion, quantitative iron kinetics, and reticulocyte production in response to phlebotomy-induced reduction in the oxygen-carrying capacity.
John W. Adamson, Akira Hayashi, George Stamatoyannopoulos, Wilbur F. Burger
Title and authors | Publication | Year |
---|---|---|
Systematic Assessment of Protein C-Termini Mutated in Human Disorders.
FitzHugh ZT, Schiller MR |
Biomolecules | 2023 |
A Japanese Family with Congenital Erythrocytosis Caused by Haemoglobin Bethesda
S Tamura, T Tamura, H Gima, A Nishikawa, Y Okamoto, N Kanazawa, L Relvas, E Cunha, MF McMullin, C Bento |
Internal Medicine | 2015 |
High Altitude and Man
JB West, S Lahiri |
1984 | |
Congenital Erythrocytosis: a New Form Associated with an Erythropoietin-dependent Mechanism
WH Whitcomb, C Peschle, M Moore, R Nitschke, JW Adamson |
British Journal of Haematology | 1980 |
Automatic Oxygen Equilibrium Determination and its Clinical Application — Recent Topics
K Imai, A Hayashi, T Suzuki |
Hemoglobin | 1980 |
Oxygen Transport to Tissue — III
IA Silver, M Erecińska, HI Bicher |
1978 | |
POLYCYTHAEMIA AND HIGH AFFINITY HAEMOGLOBINS
AD Stephens |
British Journal of Haematology | 1977 |
Hemoglobin fort gordon or α2β2145 Tyr → Asp, a new high-oxygen-affinity hemoglobin variant
HB Kleckner, JB Wilson, JG Lindeman, PD Stevens, G Niazi, E Hunter, CJ Chen, TH Huisman |
Biochimica et Biophysica Acta (BBA) - Protein Structure | 1975 |
Structural and functional study of Hb Nancy β 145 (HC 2) Tyr → Asp a high oxygen affinity hemoglobin
G Gacon, H Wajcman, D Labie, C Vigneron |
FEBS Letters | 1975 |
Interaction of Human Hemoglobin with Haptoglobin or Antihemoglobin Antibody
T Sasazuki, H Tsunoo, H Nakajima, K Imai |
The Journal of biological chemistry | 1974 |
Hemoglobin Brigham (α2Aβ2100 Pro→Leu). HEMOGLOBIN VARIANT ASSOCIATED WITH FAMILIAL ERYTHROCYTOSIS
JJ Lokich, WC Moloney, HF Bunn, SM Bruckheimer, HM Ranney |
Journal of Clinical Investigation | 1973 |