pyranose


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pyranose

(ˈpaɪrəˌnəʊs)
n
(Chemistry) chem a compound whose molecular structure contains a saturated pyran ring
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Sugar oxazolines are bicyclic molecules having a distorted structure where a six-membered pyranose ring and a five-membered oxazoline ring are fused sharing the anomeric and C2 positions.
1] correspond to pyranose ring vibrations in starch [11], The absorption bands at 574 and 524 [cm.
The first step is the binding of the a-D- pyranose form of the substrate with O3 and O4 coordinated with M1 (The residues involved with substrate binding are highlighted (Blue) on Fig.
Alginate is a binary heteropolymer containing varying proportions of 1 4-linked a L guluronic acid (G-blocks) and AYDmannuronic acid (M-blocks) units in a pyranose form arranged in linear blocks.
The enzymatic product and substrate in the GALE assay are isomers possessing very similar structure, with the difference only in the axial vs equatorial orientation of the hydroxy group on position 4 carbon of the pyranose ring.
This clearly indicates the slight distortion of the pyranose ring from regular [sup.
1993), the strength of covalent bonds in the pyranose rings and between glucose units of the cellulose polymer chain (Kalima & Jasni 2004), or the orientation of cellulose microfibrils along the axis of the fiber (Sanchis Gritsch & Murphy 2005).
The stereochemistry of the hydroxyl groups in the pyranose ring structure of the sugar moieties dictates the function of the oligosaccharide chain.