Squalene-hopene cyclase

Revision as of 16:23, 12 September 2019 by Alexander Berchansky (talk | contribs)


Function

Squalene-hopene cyclase (SHC) catalyzes the conversion of acyclic squalene into the pentacyclic hopene and hopanol in prokaryotes. The reaction which SHC cactalyzes involves the breaking or forming of 13 covalent bonds, the formation of 9 chiral centers and the formation of 5 rings in a single step[1].

Relevance

The hopenoids condense lipid membranes and reduce their permeability.

Structural highlights

The [2]. Water molecules are shown as red spheres.

Structure of squalene-hopene cyclase complex with 2-azasqualene and detergent (PDB code 1ump).

Drag the structure with the mouse to rotate

3D structures of squalene-hopene cyclase3D structures of squalene-hopene cyclase

Updated on 12-September-2019

ReferencesReferences

  1. Hammer SC, Marjanovic A, Dominicus JM, Nestl BM, Hauer B. Squalene hopene cyclases are protonases for stereoselective Bronsted acid catalysis. Nat Chem Biol. 2015 Feb;11(2):121-6. doi: 10.1038/nchembio.1719. Epub 2014 Dec, 15. PMID:25503928 doi:http://dx.doi.org/10.1038/nchembio.1719
  2. Reinert DJ, Balliano G, Schulz GE. Conversion of squalene to the pentacarbocyclic hopene. Chem Biol. 2004 Jan;11(1):121-6. PMID:15113001 doi:http://dx.doi.org/10.1016/j.chembiol.2003.12.013

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

Michal Harel, Alexander Berchansky