Sulfite Oxidase - model molybdenum-containing oxo-transfer enzyme

PDB entry 1SOX - Sulfite Oxidase From Chicken Liver - Caroline Kisker, Hermann Schindelin, Andrew Pacheco, William A. Wehbi, Robert M. Garrett, K.V. Rajagopalan, John H. Enemark, and D.C. Rees - 1997.
(page prepared by TC from Chem 351, Spring 2004)
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Cruiser Index

The PDB code is 1SOX, it has two Fe binding sites and two Mo binding sites (1 Fe and 1 Mo per chain). The Mo sites are my focus and they are structurally identical. Each Mo binds to five atoms in a geometry that appears to be square pyramidal.
MO 7296
(5100) Cysteine 185 Chain B - 2.5 Angstrom
(7373) Water, oxygen Atom - 2.290 Angstrom
(7285) Molybdenum Cofactor S1 - 2.396 Angstrom
(7287) Molybdenum Cofactor S2 - 2.363 Angstrom
(7297) Oxygen Atom - 1.710 Angstrom

MO3639
(1435) Cysteine 185 Chain A - 2.474 Angstrom
(7372) Water, Oxygen Atom - 2.248 Angstrom
(3628) Molybdenum Cofactor S1 - 2.382 Angstrom
(3639) Molybdenum Cofactor S2 - 2.369 Angstrom
(3640) Oxygen Atom - 1.736 Angstrom
Article:
Kisker, Caroline; Schindelin, Hermann; Pacheco, Andrew; Wehbi, William A.; Garrett, Robert M.; Rajagopalan, K. V.; Enemark, John H.; Rees, D. C. Molecular basis of sulfite oxidase deficiency from the structure of sulfite oxidase. Cell (Cambridge, Massachusetts) (1997), 91(7), 973-983. CODEN: CELLB5 ISSN:0092-8674. CAN 128:164302 AN 1998:30611 CAPLUS