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Xyloglucan endo-transglycosylase

From Wikipedia, the free encyclopedia
Xyloglucan endo-transglycosylase C terminal domain
xyloglucan endotransglycosylase native structure.
Identifiers
SymbolXET_C
PfamPF06955
InterProIPR010713
SCOP21un1 / SCOPe / SUPFAM
Available protein structures:
Pfam  structures / ECOD  
PDBRCSB PDB; PDBe; PDBj
PDBsumstructure summary

In molecular biology, the xyloglucan endo-transglycosylase (XET) is an enzyme that is involved in the metabolism of xyloglucan, which is a component of plant cell walls. This enzyme is part of glycoside hydrolase family 16.

Function

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Xyloglucan endo-transglycosylase (XET) is thought to be highly important during seed germination, fruit ripening, and rapid wall expansion.[1]

Xyloglucan is the predominant hemicellulose in the primary cell walls of most dicotyledons. With cellulose, it forms a network that strengthens the cell wall. XET catalyses the splitting of xyloglucan chains and the linking of the newly generated reducing end to the non-reducing end of another xyloglucan chain, thereby loosening the cell wall.[2]

References

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  1. ^ Baumann MJ, Eklöf JM, Michel G, Kallas AM, Teeri TT, Czjzek M, et al. (2007). "Structural evidence for the evolution of xyloglucanase activity from xyloglucan endo-transglycosylases: biological implications for cell wall metabolism". Plant Cell. 19 (6): 1947–63. doi:10.1105/tpc.107.051391. PMC 1955714. PMID 17557806.
  2. ^ Schröder R, Atkinson RG, Langenkämper G, Redgwell RJ (February 1998). "Biochemical and molecular characterisation of xyloglucan endotransglycosylase from ripe kiwifruit". Planta. 204 (2): 242–51. Bibcode:1998Plant.204..242S. doi:10.1007/s004250050253. PMID 9487728. S2CID 24098211.
This article incorporates text from the public domain Pfam and InterPro: IPR010713