THE NUTRITIONAL REQUIREMENTS OF HEMOPHILUS PARAINFLUENZAE 7901
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چکیده
منابع مشابه
Hematin enzymes of Hemophilus parainfluenzae.
A paste of washed Hemophilus parainfluenzae grown to the stationary phase with vigorous aeration appears tan to brown in color. Frozen cells are deep reddish brown and show absorption bands typical of cytochrome pigments when examined with a spectroscope. Studies with these bacteria show that the cytochromes are the major hematin enzymes present and that the respiratory metabolism has the prope...
متن کاملThe Oxidation of I(-)-aspartic and Z(+)-glutamic Acids by Hemophilus Parainfluenzae
The organism, Hemophilus parain$uenzae, requires factor V as an essential nutrient (1). It has been shown that diand triphosphopyridine nucleotides can serve as factor V (2). When the bacteria have utilized the available factor V, growth and the ability to perform those functions requiring pyridine nucleotide cease. If pyridine nucleotide is added to the bacteria, their ability to grow and carr...
متن کاملFactors Affecting the Affinity for Oxygen of Cytochrome Oxidases in Hemophilus Parainfluenzae.
The rate of oxygen utilization by the electron transport system at low oxygen concentrations has been difficult to explain mechanistically (l-3). As in most enzymatic reactions the rate of oxygen utiliiation is independent of oxygen concentration when the oxygen concentration is high, but becomes dependent upon the oxygen concentration at some critical value of the oxygen tension. Chance (4) ha...
متن کاملRapid reactions of cytochromes of Hemophilus parainfluenzae on addition of substrates or oxygen.
Addition of oxidizable substrates to aerobic suspensions of Hemophitus parainfluenzae containing no endogenous substrate results in rapid reduction of h and c type cytochromes to the aerobic steady state. The extent of reduction depends upon the relative activities of the dehydrogenases and oxidases involved. Addition of oxygen to anaerobic cells containing substrate rapidly oxidizes the cytoch...
متن کاملDifferential Synthesis of Five Primary Electron Transport Dehydrogenases in Hemophilus Parainfluenzae.
Growth of Hemophilus parainjluenzae requires the formation of an electron transport system consisting of six cytochrome components (1). As a compensatory mechanism for changing environment, this bacterium can modify the cytochrome oxidase composition and the proportions of the cytochromes during conditions where there is no cell division (2). The intact bacterium has remarkable permeability to ...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1949
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.58.3.379-386.1949