Sugar Transport
نویسندگان
چکیده
منابع مشابه
Sugar Transport in Neurospora
A number of independent systems for sugar transport in Neurospora have been postulated. An approach to identification of specific components of the sorbose transport system in ungerminated conidia pretreated with sorbose is described here. The fact that sorbose stimulates sorbose-uptake without causing germination was exploited in differential labeling experiments. Sorbose treated and untreated...
متن کاملQuantitative Radioautography of Sugar Transport
A B S T R A C T Both galactose accumulation and phlorizin binding by columnar epithelial cells have been investigated in vitro with a recently developed technique for high-resolution, plastic-section radioautography which is particularly suited to small quantities of biopsy tissue. Grain density analysis of the radioautographs provides definitive support for the view that the cellular mechanism...
متن کامل'Active' sugar transport in eukaryotes.
Sugar transporters in prokaryotes and eukaryotes belong to a large family of membrane proteins containing 12 transmembrane alpha-helices. They are divided into two classes: one facilitative (uniporters) and the other concentrative (cotransporters or symporters). The concentrative transporters are energised by either H+ or Na+ gradients, which are generated and maintained by ion pumps. The facil...
متن کاملSugar Transport in Neurospora crassa*
The transport of several sugars by cells of Neurospora crassa grown in shake culture has been investigated. 3-OMethyl-n-glucose is a substrate for the glucose transport system in glucose-grown cells but cannot be phosphorylated by the ATP-dependent hexokinase which readily catalyzes the phosphorylation of D-glucose. Since this nonmetabolizable glucose analogue cannot be accumulated against a co...
متن کاملSugar transport in conducting elements of sugar beet leaves.
Autoradiography was used to determine the distribution of labeled sugar in conducting elements of the blade and petiole of sugar beet leaves at intervals ranging from 5 sec to 24 hr. The processes of assimilation by the green cells, collection of sugar in the minor veins and export in phloem elements were demonstrated visually. It appears that in minor veins sugar is translocated in companion c...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1971
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(19)76987-7