Oct. 21, 1997

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The crystal structure of CYP55A1 has appeared in Nature Structural Biology
volume 4, number 10, October 1997 pp. 827-832.  This enzyme is a nitric oxide
reductase.
The source is fungal (Fusarium oxysporum), though the protein is soluble and
falls in
phylogenetic trees in the 105 family.  This probably represents a lateral gene
transfer from
a bacterial species like Streptomyces.
.