THE PROSTHETIC GROUP OF SULFHEMOGLOBIN
نویسندگان
چکیده
منابع مشابه
The Prosthetic Group of Sulfhemoglobin by Felix Iiaurowitz*
Treatment of hemoglobin with H&S and 02 gives rise to the formation of a green pigment, sulfhemoglobin. In contradistinction to the transformation of hemoglobin into HbOz, HbCO, Meth-Hb, and other hemoglobin derivatives the transformation into sulfhemoglobin is not reversible. The nature of this reaction is as yet unknown (1). An attempt.was made therefore to isolate the prosthetic group of sul...
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In general, when hemoproteins are treated with acidified acetone, the protein is precipitated, while the heme remains in solution. Exceptions are cytochrome c, lactoperoxidase, and myeloperoxidase; the linkages between heme and protein in these instances being covalent. While the nature of the linkages in cytochrome c and lactoperoxidase have been characterized, that present in myeloperoxidase ...
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This investigation was carried out at the Indian Institute of Science, Bangalore, where spectroscope facilities were available. The author is indebted to Sir J. C. Ghosh, Director, Indian Institute of Science, Bangalowe, for laboratory accommodation and to Mr M. Srinivasaya, Head of the Fermentation Technology Section at the Institute, for much helpful advice and discussion. Thanks are also due...
متن کاملThe Constitution of the Prosthetic Group of Catalase*
The constitution of the enzyme catalase is similar to that of hemoglobin. The prosthetic group is a hematin (1) and combines with a specific protein to form the enzyme molecule. Spectroscopic evidence suggests a close relationship between the porphyrin-iron complex contained in the enzyme and protohematin, the prosthetic group of hemoglobin (1). In the enzyme, however, the iron is held in the t...
متن کاملThe preparation and some physical properties of sulfhemoglobin.
Sulfhemoglobins were prepared from hemoglobin A and carboxypeptidase A-treated hemoglobin. The synthesis was achieved by oxidation of the ferric hemoglobins with H,O, followed by reaction with excess hydrosulfide. ERR spectra of these ferric sulfhemoglobins at high pH were well resolved from the resonances of contaminating ferric hemoglobins. Thus, quantitative ERR measurements provided a conve...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1941
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(19)56183-x