Hemoglobin f koelliker (α minus 141 (HC 3) arg γ) a modification of fetal hemoglobin
Hemoglobin, ISSN: 0363-0269, Vol: 1, Issue: 3, Page: 257-266
1977
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Article Description
An electrophoretically HbA-like hemoglobin component is produced In increasing amounts during storage in hemolysate preparations from macerated tissue (liver, kidney, spleen) of fetuses. Within twenty four hours after hemolysate preparation the "fast moving" fraction increases up to 40 per cent of total hemoglobin, while the concentration of HbA remains constant (5-7 % in hemolysates obtained from peripheral blood of the same donor individuals. By structural studies (fingerprint and aminoacid analysis) the HbA-like component was identified as ai. artefact of HbF, characterized by the absence of the C-terminal arginine of the α chains. From experimental data it is concluded, that the break down product results from a digestion of HbF by carboxypeptidase B, the enzyme being released from the macerated tissues. Analogous to a modification of HbA, i.e. Hb Koelliker (α minus 141 Arg β), the structure of the degradaeion product of Hbf is α minus 141 Arg γ2 (HbF Koelliker). These findings should be considered when hemolysate preparations contaminated with tissue cells are used for investigations on developmental hemoglobins especially by electrophoretic or chromatographic methods. © 1977 Informa UK Ltd All rights reserved: reproduction in whole or part not permitted.
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