Abstract:
:Rat erythrocytes, in contrast to red blood cells from other mammals, have been shown to contain only one hexokinase isozymic form identified as type I by chromatographic and kinetic properties. Rat reticulocytes contain 3.6-times the hexokinase activity found in mature erythrocytes but exactly the same isozyme. By a combination of ion-exchange chromatography, dye-ligand chromatography and high-pressure liquid chromatography the rat erythrocyte hexokinase was purified more than 84 000-fold to a specific activity of 143 units/mg protein and shown to be homogeneous by sodium dodecyl sulfate-gel electrophoresis. The native protein showed a molecular weight of 100 000 by gel-filtration and an apparent molecular weight of 98 000 under denaturating conditions in sodium dodecyl sulfate-gel electrophoresis. The isoelectric point was shown to be 6.3 pH units. This data provides evidence of only one form of hexokinase in the erythrocytes of a mammal.
journal_name
Mol Cell Biochemjournal_title
Molecular and cellular biochemistryauthors
Serafini G,Magnani M,Stocchi V,Dachà M,Forniani Gdoi
10.1007/BF00224765subject
Has Abstractpub_date
1986-02-01 00:00:00pages
179-85issue
2eissn
0300-8177issn
1573-4919journal_volume
69pub_type
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