Oxidase - energy transducer, electron carrier.
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For more information see
Biochemistry Online: Chapter 8B - B: BIOLOGICAL OXIDATION REACTIONS
DEHYDROGENASES, MONO- AND DIOXYGENASES, AND OXIDASES
II. General Structure
If you manually rotate
the structure, return it to the original orientation before the next
selection. The original.
Note the dimeric structure of the enzyme - the large number of colors resulting is from the 26 discrete chains in Cyt. C Oxidase (13 in each dimer).
Protein backbone with spacefilling heme
(CPK), Cu2+ (gold),
and Mg2+, green
Protein backbone with cytochrome C binding sites and heme/metal groups
Asp and Glu
residues in the
cytochrome C binding sites
heme/metal groups cyan
The negatively charged
Asp and Glu residues
which comprise the cytochrome C
concave binding sites
facilitate the binding of cytochrome C, which
with a pI of 10.6 has a large positive charge.
Observe the close proximity of the binding sites to the heme/metal centers.