Figure 4.
Figure 4. The OXA-10 homodimer. a, Stereo view of a ribbon
representation43 of the observed OXA-10 homodimer. One monomer
is in green and gold, the other in blue and red. The two cobalt
atoms that lie at the dimer interface are shown in dark blue.
The active site residues Ser 67 and Lys 70 are shown in ball and
stick representation. It should be noted that the active site of
each monomer lies on the same face of the dimer and are 40
Å apart. b, Stereo view of the coordination of the cobalt atoms
(blue) by the coordinating ligands Glu 227 and His 203 within
one monomer and Glu 190 within the second monomer. Two ordered
waters (small spheres) complete the approximate octahedral
coordination of each cobalt. The refined temperature factor of
each cobalt atom is 19.5 Å2.
The above figure is reprinted
by permission from Macmillan Publishers Ltd:
Nat Struct Biol
(2000,
7,
918-925)
copyright 2000.
40
Å apart. b, Stereo view of the coordination of the cobalt atoms
(blue) by the coordinating ligands Glu 227 and His 203 within
one monomer and Glu 190 within the second monomer. Two ordered
waters (small spheres) complete the approximate octahedral
coordination of each cobalt. The refined temperature factor of
each cobalt atom is 19.5 Å2.