4.2.2.19: chondroitin B lyase
This is an abbreviated version!
For detailed information about chondroitin B lyase, go to the full flat file.
Word Map on EC 4.2.2.19
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4.2.2.19
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dermatan
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glycosaminoglycans
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proteoglycans
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disaccharide
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heparan
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heparinum
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flavobacterium
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heparitinase
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hyaluronidase
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decorin
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oversulfated
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4-sulphate
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nonsulfated
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l-iduronic
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keratanase
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4.2.2.5
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idoa
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hexasaccharide
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galactosaminoglycans
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analysis
- 4.2.2.19
- dermatan
- glycosaminoglycans
- proteoglycans
- disaccharide
- heparan
- heparinum
-
flavobacterium
- heparitinase
- hyaluronidase
- decorin
-
oversulfated
-
4-sulphate
-
nonsulfated
-
l-iduronic
- keratanase
-
4.2.2.5
-
idoa
- hexasaccharide
- galactosaminoglycans
- analysis
Reaction
= + 4-deoxy-beta-D-gluc-4-enuronosyl-1,3-GalNAc
Synonyms
ChnB, ChonB, chondroitin B lyase, chondroitinase B, CslB, lyase, chondroitin B
ECTree
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Reaction
Reaction on EC 4.2.2.19 - chondroitin B lyase
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acts on dermatan sulfate as sole substrate, active site structure involving Lys250, Arg271, His272, and Glu333, substrate binding mechanism involving Arg363 and Arg364
[dermatan sulfate]n = [dermatan sulfate]n-1 + 4-deoxy-beta-D-gluc-4-enuronosyl-1,3-GalNAc
acts on dermatan sulfate as sole substrate, catalytic mechanism, Glu333 is involved, substrate binding mechanism involving Arg318 and Arg364 interacting with the sulfate group
[dermatan sulfate]n = [dermatan sulfate]n-1 + 4-deoxy-beta-D-gluc-4-enuronosyl-1,3-GalNAc
acts on dermatan sulfate as sole substrate, enzyme cleaves the beta(1,4)-linkage of dermatan sulfate in a random manner, yielding 4,5-unsaturated dermatan sulfate disaccharides, calcium-dependent catalytic mechanism, active site structure