1.14.14.12: 3-hydroxy-9,10-secoandrosta-1,3,5(10)-triene-9,17-dione monooxygenase
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Reaction
Synonyms
3-hydroxy-9,10-seconandrost-1,3,5(10)-triene-9,17-dione 4-hydroxylase, HsaAB
ECTree
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Crystallization
Crystallization on EC 1.14.14.12 - 3-hydroxy-9,10-secoandrosta-1,3,5(10)-triene-9,17-dione monooxygenase
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hanging drop vapor-diffusion method at 18°C, the crystal structure of HsaA to 2.5 A resolution reveales that the enzyme has the same fold, flavin-binding site, and catalytic residues as p-hydroxyphenyl acetate hydroxylase. HsaA prepared aerobically from the Escherichia coli host exists as a mixture of dimers and octamers in solution while HsaA prepared anaerobically from the rhodococcal host exists as a tetramer