Cellulose 1,4-β-cellobiosidase (reducing end)
Identifiers
EC no.3.2.1.176
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum
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PMCarticles
PubMedarticles
NCBIproteins

Cellulose 1,4-β-cellobiosidase (reducing end) (EC 3.2.1.176, CelS, CelSS, endoglucanase SS, cellulase SS, cellobiohydrolase CelS, Cel48A) is an enzyme with systematic name 4-beta-D-glucan cellobiohydrolase (reducing end).[1][2] This enzyme catalyses the following chemical reaction

Hydrolysis of (1->4)-beta-D-glucosidic linkages in cellulose and similar substrates, releasing cellobiose from the reducing ends of the chains.

The CelS enzyme from Clostridium thermocellum is the most abundant subunit of the cellulosome formed by the organism.

References

  1. Barr BK, Hsieh YL, Ganem B, Wilson DB (January 1996). "Identification of two functionally different classes of exocellulases". Biochemistry. 35 (2): 586–92. doi:10.1021/bi9520388. PMID 8555231.
  2. Saharay M, Guo H, Smith JC (October 2010). "Catalytic mechanism of cellulose degradation by a cellobiohydrolase, CelS". PLOS ONE. 5 (10): e12947. doi:10.1371/journal.pone.0012947. PMC 2953488. PMID 20967294.
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