| Autor: |
R. B. Fisher, I. A. Nimmo |
| Rok vydání: |
1973 |
| Předmět: |
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| Zdroj: |
Quarterly Journal of Experimental Physiology and Cognate Medical Sciences. 58:153-161 |
| ISSN: |
0033-5541 |
| DOI: |
10.1113/expphysiol.1973.sp002200 |
| Popis: |
Time-courses have been determined between 2·0°C and 25·5°C for the uptake of D(+) glucose, D(+) xylose and L(+) arabinose by human erythrocytes. They can be explained by assuming uptake is governed by a mobile carrier of the Widdas type. Since at any temperature the three aldoses have the same maximum rate of permeation but different half-saturation concentrations for the carrier, it is argued that they have a common carrier, and that the rate-limiting step in permeation is the translocation across the membrane of the carrier or carrier-aldose complex. Data are also given which suggest that α- and β-glucose have different half-saturation concentrations for the carrier. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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