mucoitinn.
/mjuːˈkɔɪtɪn/, U.S. /mjuˈkɔɪdɪn/ Biochemistry. Now rare.
A supposed glycosaminoglycan, now generally considered to be a mixture, occurring chiefly in gastric mucus and the cornea, usually in a sulphated form.Recorded earliest in mucoitin sulphuric acid n. at Compounds.
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mucoitin1916
1916 P. A. Levene & J. López-Suárez in Jrnl. Biol. Chem. 25 513 Further work on mucoitin sulfuric acid (as we propose to name this substance) is now in progress.
1925 P. A. Levene Hexosamines ii. iii. 85 A considerable part of the sulphuric acid radicle had been removed in the process of preparation, so that it was possible to determine the properties of mucoitin and of mucoitin sulphuric acid in the same sample.
1925 P. A. Levene Hexosamines ii. i. 76 The presence of glucuronic acid in the chondroitin and mucoitin sulphuric acids was demonstrated.
1964 J. S. Brimacombe & J. M. Webber Mucopolysaccharides vi. 142 It seems likely that the material originally designated as mucoitin sulphate contained hyaluronic acid admixed with sulphated mucopolysaccharides containing 2-amino-2-deoxy- d-glucose residues.
1978 Arch. d'Anat. Microsc. et de Morphol. Expér. 67 186/1 In this class [sc. Holothuroidea], besides chondroitin sulphate and fucan sulphate, the presence of mucoitin sulphate has been claimed by Maki and Hiyama.
Compounds
mucoitin sulphuric acid n. sulphated mucoitin.
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1916Mucoitin sulfuric acid [see main sense].
1967 Chem. Abstr. 66 9649/1 The chondroitinsulfuric acid and mucoitinsulfuric acid contents were higher in the umbilical cord and myxoid chondroma.
This entry has been updated (OED Third Edition, March 2003; most recently modified version published online March 2022).
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