EC - Pectate disaccharide-lyase

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IntEnz Enzyme Nomenclature


Accepted name:
pectate disaccharide-lyase
Other names:
exopectate lyase
exopectic acid transeliminase
exopolygalacturonic acid-trans-eliminase
pectate exo-lyase
exopolygalacturonate lyase
pelW (gene name)
pelX (gene name)
Systematic name:
(1→4)-α-D-galacturonan reducing-end-disaccharide-lyase



The enzyme catalyses the eliminative cleavage of an unsaturated disaccharide from the reducing end of homogalacturonan (the backbone of smooth regions of pectate, also known as de-esterified pectin).

Links to other databases

Enzymes and pathways: NC-IUBMB , BRENDA , DIAGRAM , ExplorEnz , ENZYME@ExPASy , KEGG , MetaCyc , UniPathway
Structural data: CSA , EC2PDB
Gene Ontology: GO:0047489
CAS Registry Number: 37290-87-2


  1. Macmillan, J.D. and Vaughn, R.H.
    Purification and properties of a polygalacturonic acid-trans-eliminase produced by Clostridium multifermentans.
    Biochemistry 3: 564-572 (1964). [PMID: 14188174]
  2. Shevchik, V. E., Kester, H. C., Benen, J. A., Visser, J., Robert-Baudouy, J., Hugouvieux-Cotte-Pattat, N.
    Characterization of the exopolygalacturonate lyase PelX of Erwinia chrysanthemi 3937.
    J. Bacteriol. 181: 1652-1663 (1999). [PMID: 10049400]
  3. Shevchik, V. E., Condemine, G., Robert-Baudouy, J., Hugouvieux-Cotte-Pattat, N.
    The exopolygalacturonate lyase PelW and the oligogalacturonate lyase Ogl, two cytoplasmic enzymes of pectin catabolism in Erwinia chrysanthemi 3937.
    J. Bacteriol. 181: 3912-3919 (1999). [PMID: 10383957]

[EC created 1972, modified 2002]