Galactogen
Chemical compound / From Wikipedia, the free encyclopedia
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Galactogen is a polysaccharide of galactose that functions as energy storage in pulmonate snails and some Caenogastropoda.[1] This polysaccharide is exclusive of the reproduction and is only found in the albumen gland from the female snail reproductive system and in the perivitelline fluid of eggs.
Quick Facts Names, Identifiers ...
General structure of the polysaccharide galactogen | |
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IUPAC name
beta-D-galacto-hexopyranosyl-(1->3)-[beta-D-galacto-hexopyranosyl-(1->6)]-beta-D-galacto-hexopyranose | |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Galactogen serves as an energy reserve for developing embryos and hatchlings, which is later replaced by glycogen in juveniles and adults.[2] The advantage of accumulating galactogen instead of glycogen in eggs remains unclear,[3] although some hypotheses have been proposed (see below).