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Melibiose

About: Melibiose is a research topic. Over the lifetime, 1002 publications have been published within this topic receiving 27300 citations. The topic is also known as: Melibiose.


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Journal ArticleDOI
TL;DR: The lectin moderately inhibited cell proliferation in the P388 cell line dose dependently and Interestingly, lectin-treated cells did not show a fragmented DNA ladder as is caused by apoptosis, suggesting that the cell proliferation inhibition was caused by another unknown mechanism.
Abstract: A lectin was purified from Japanese sea hare Aplysia kurodai by lactosyl-agarose affinity chromatography. The molecular mass of the lectin was determined to be 56 and 32 kDa by SDS-PAGE under non-reducing and reducing conditions, respectively. It was found to agglutinate trypsinized and glutaraldehyde-fixed rabbit and human erythrocytes in the absence of divalent cations. The lectin exhibited stable thermo-tolerance as it retained hemagglutinating activity for 1 h even at 80°C and showed stability at pH 10. By contrast, it was very sensitive at pH less than 5 and in the presence of the sulfhydryl-group preserving reagent, β-mercaptoethanol. The hemagglutinating activity by the lectin was specifically inhibited by D-galactose, galacturonic acid, methyl-α- and methyl-β-D-galactopyranoside, lactose, melibiose, and asialofetuin. The association rate constant (k ass) and dissociation rate constant (k diss) were determined for the lectin to be 4.3·105 M−1·sec−1 and 2.2·10−3 sec−1, respectively, using a surface plasmon resonance biosensor. The lectin moderately inhibited cell proliferation in the P388 cell line dose dependently. Interestingly, lectin-treated cells did not show a fragmented DNA ladder as is caused by apoptosis, suggesting that the cell proliferation inhibition was caused by another unknown mechanism.

22 citations

Journal ArticleDOI
TL;DR: The results are inconsistent with the notion that an ionizable histidine residue at position 322 is obligatorily required for H+ transport or the active accumulation of galactosides against a concentration gradient.

22 citations

Journal ArticleDOI
TL;DR: It is proposed that the synthesis of stachyose in mature leaves of C. pepo proceeds via this galactosyltransferase and not via α-galactosidase, and was optimally active at pH 6.9 and stable for at least a month at 4° in the presence of 20 mM 2-mercaptoethanol.

22 citations

Journal ArticleDOI
TL;DR: It is demonstrated that the alpha-galactosidase of L. raffinolactis is thermolabile and inoperative at 42 degrees C, the optimal growth temperature of S. thermophilus.

22 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20236
202212
202112
202017
201913
201816