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Information on EC - endo-(1->4)-fucoidanase

for references in articles please use BRENDA:EC3.2.1.212
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IUBMB Comments
The enzyme specifically hydrolyses (1->4)-alpha-L-fucoside linkages in fucan. Fucans are found mainly in different species of seaweed and are sulfated polysaccharides with a backbone of (1->3)-linked or alternating (1->3)- and (1->4)-linked alpha-L-fucopyranosyl residues. In the literature, the sulfated polysaccharides are often called fucoidans. Fucoidans include polysaccharides with a relatively low proportion of fucose and some polysaccharides that have a backbone composed of other saccharides with fucose in the branching side chains. The sulfation of the alpha-L-fucopyranosyl residues may occur at positions 2 and 3. The enzyme degrades fucan to sulfated alpha-L-fucooligosaccharides but neither L-fucose nor small fucooligosaccharides are produced.
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The enzyme appears in viruses and cellular organisms
endo-1,4-fucoidanase, FFA2, poly[(1->4)-alpha-L-fucoside-2-sulfate] glycanohydrolase, more
endohydrolysis of (1->4)-alpha-L-fucoside linkages in fucan
show the reaction diagram
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