GC: nf

CT: Hydrogenases are enzymes that catalyse the reversible oxidation of H2 to protons at close to the thermodynamic potential. The reaction takes place at a bimetallic active site consisting of Fe atoms (‘(FeFe)-hydrogenases’) or one Ni and one Fe atom (‘(NiFe)-hydrogenases’), coordinated by biologically unusual CO and CN&ndash ligands.

S: http://armstrong.chem.ox.ac.uk/hydrogenase.html (last access: 20 December 2014)

N: 1. From hydrogen (1791, from French hydrogène, coined 1787 by G. de Morveau, Lavoisier, Berthollet, and Fourcroy from Greek hydr-, stem of hydor “water” + French -gène “producing”) and -ase (word-forming element used in naming enzymes, from ending of diastase).
2. An enzyme of various microorganisms that promotes the formation and utilization of gaseous hydrogen.
First known use of “hydrogenase”: 1900.

S: 1. OED http://www.etymonline.com/index.php?allowed_in_frame=0&search=hydrogen&searchmode=none (last access: 20 December 2014). 2. MW – http://www.merriam-webster.com/dictionary/hydrogenase (last access: 20 December 2014). 3.


CR: hydrogen