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Results for “AMINO SUGARS”

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At least 307 records · Page 17Linked to original sources
PubMed1993

New amino sugar analogues are incorporated at different rates into glycoproteins of mouse organs.

Different radiolabelled N-acyl-derivatives of D-glucosamine were synthesized using D-glucosamine and the respective carbonic acid anhydride. Metabolism of these sugar analogues could be shown in vitro as well as in vivo. After the intraperitoneal administration of these radiolabelled N-acyl-D-glucosamines to mice, their rate of incorporation into glycoproteins of different organs was found to increase markedly with the length of the N-acyl side chain. Highest incorporation was measured in the whole intestine using N-pentanoyl-D-glucosamine as label.

Acetylglucosamine↗
PubMed2000

Regulation of sugar, amino acid and peptide plant membrane transporters.

During the past few years, various cDNAs encoding the proton cotransporters which mediate the uptake of sucrose, hexoses, amino acids and peptides across the plant plasma membrane have been cloned. This has made possible some preliminary insight into the regulation of the activity of these transporters at various levels. The paper summarises the present status of knowledge and gaps relative to their transcriptional control (organ, tissue and cell specificity, response to the environment) and post-transcriptional control (targeting and turnover, kinetic and thermodynamic control, lipidic environment, phosphorylation). This outline and the description of a few cases (the sink/source transition of the leaf, the pollen grain, the legume seed) serve as a basis for suggesting some directions for future research.

Amino Acid Transport Systems↗