| EC |
1.1.99.18 |
| Accepted name: |
cellobiose dehydrogenase (acceptor) |
| Reaction: |
cellobiose + acceptor = cellobiono-1,5-lactone + reduced acceptor |
| Other name(s): |
cellobiose dehydrogenase; cellobiose oxidoreductase; Phanerochaete chrysosporium cellobiose oxidoreductase; CBOR; cellobiose oxidase; cellobiose:oxygen 1-oxidoreductase; CDH; cellobiose:(acceptor) 1-oxidoreductase |
| Systematic name: |
cellobiose:acceptor 1-oxidoreductase |
| Comments: |
Also acts, more slowly, on cello-oligosaccharides, lactose and D-glucosyl-1,4-β-D-mannose. The enzyme from the white rot fungus Phanerochaete chrysosporium is unusual in having two redoxin domains, one containing a flavin and the other a protoheme group. It transfers reducing equivalents from cellobiose to two types of redox acceptor: two-electron oxidants, including redox dyes, benzoquinones, and molecular oxygen, and one-electron oxidants, including semiquinone species, iron(II) complexes, and the model acceptor cytochrome c [9]. 2,6-Dichloroindophenol can act as acceptor in vitro. |
| Links to other databases: |
BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 54576-85-1 |
| References: |
| 1. |
Coudray, M.-R., Canebascini, G. and Meier, H. Characterization of a cellobiose dehydrogenase in the cellulolytic fungus porotrichum (Chrysosporium) thermophile. Biochem. J. 203 (1982) 277–284. [PMID: 7103940] |
| 2. |
Dekker, R.F.H. Induction and characterization of a cellobiose dehydrogenase produced by a species of Monilia. J. Gen. Microbiol. 120 (1980) 309–316. |
| 3. |
Dekker, R.F.H. Cellobiose dehydrogenase produced by Monilia sp. Methods Enzymol. 160 (1988) 454–463. |
| 4. |
Habu, N., Samejima, M., Dean, J.F. and Eriksson, K.E. Release of the FAD domain from cellobiose oxidase by proteases from cellulolytic cultures of Phanerochaete chrysosporium. FEBS Lett. 327 (1993) 161–164. [DOI] [PMID: 8392950] |
| 5. |
Baminger, U., Subramaniam, S.S., Renganathan, V. and Haltrich, D. Purification and characterization of cellobiose dehydrogenase from the plant pathogen Sclerotium (Athelia) rolfsii. Appl. Environ. Microbiol. 67 (2001) 1766–1774. [DOI] [PMID: 11282631] |
| 6. |
Hallberg, B.M., Henriksson, G., Pettersson, G. and Divne, C. Crystal structure of the flavoprotein domain of the extracellular flavocytochrome cellobiose dehydrogenase. J. Mol. Biol. 315 (2002) 421–434. [DOI] [PMID: 11786022] |
| 7. |
Ayers, A.R., Ayers, S.B. and Eriksson, K.-E. Cellobiose oxidase, purification and partial characterization of a hemoprotein from Sporotrichum pulverulentum. Eur. J. Biochem. 90 (1978) 171–181. [DOI] [PMID: 710416] |
| 8. |
Ayers, A.R. and Eriksson, K.-E. Cellobiose oxidase from Sporotrichum pulverulentum. Methods Enzymol. 89 (1982) 129–135. [PMID: 7144569] |
| 9. |
Mason, M.G., Nicholls, P., Divne, C., Hallberg, B.M., Henriksson, G. and Wilson, M.T. The heme domain of cellobiose oxidoreductase: a one-electron reducing system. Biochim. Biophys. Acta 1604 (2003) 47–54. [DOI] [PMID: 12686420] |
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| [EC 1.1.99.18 created 1983, modified 2002 (EC 1.1.5.1 created 1983, incorporated 2002, EC 1.1.3.25 created 1986, incorporated 2005)] |
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