Biology:Squalene—-hopanol cyclase

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Squalene—hopanol cyclase
Identifiers
EC number4.2.1.129
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum

Squalene—hopanol cyclase (EC 4.2.1.129, squalene—hopene cyclase) is an enzyme with systematic name hopan-22-ol hydro-lyase.[1][2] This enzyme catalyses the following chemical reaction

hopan-22-ol [math]\displaystyle{ \rightleftharpoons }[/math] squalene + H2O

The enzyme produces the cyclization products hopene and hopanol.

References

  1. "Squalene-hopene cyclase: final deprotonation reaction, conformational analysis for the cyclization of (3R,S)-2,3-oxidosqualene and further evidence for the requirement of an isopropylidene moiety both for initiation of the polycyclization cascade and for the formation of the 5-membered E-ring". Organic & Biomolecular Chemistry 2 (10): 1456–70. May 2004. doi:10.1039/b401172d. PMID 15136801. 
  2. "Site-directed mutagenesis experiments on the putative deprotonation site of squalene-hopene cyclase from Alicyclobacillus acidocaldarius". Bioscience, Biotechnology, and Biochemistry 68 (3): 728–38. March 2004. doi:10.1271/bbb.68.728. PMID 15056909. 

External links