2bix: Difference between revisions

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==Overview==
==Overview==
Enzymes that produce retinal and related apocarotenoids constitute a, sequence- and thus structure-related family, a member of which was, analyzed by x-ray diffraction. This member is an oxygenase and contains an, Fe2+-4-His arrangement at the axis of a seven-bladed beta-propeller chain, fold covered by a dome formed by six large loops. The Fe2+ is accessible, through a long nonpolar tunnel that holds a carotenoid derivative in one, of the crystals. On binding, three consecutive double bonds of this, carotenoid changed from a straight all-trans to a cranked cis-trans-cis, conformation. The remaining trans bond is located at the dioxygen-ligated, Fe2+ and cleaved by oxygen.
Enzymes that produce retinal and related apocarotenoids constitute a sequence- and thus structure-related family, a member of which was analyzed by x-ray diffraction. This member is an oxygenase and contains an Fe2+-4-His arrangement at the axis of a seven-bladed beta-propeller chain fold covered by a dome formed by six large loops. The Fe2+ is accessible through a long nonpolar tunnel that holds a carotenoid derivative in one of the crystals. On binding, three consecutive double bonds of this carotenoid changed from a straight all-trans to a cranked cis-trans-cis conformation. The remaining trans bond is located at the dioxygen-ligated Fe2+ and cleaved by oxygen.


==About this Structure==
==About this Structure==
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[[Category: Al-Babili, S.]]
[[Category: Al-Babili, S.]]
[[Category: Beyer, P.]]
[[Category: Beyer, P.]]
[[Category: Kloer, D.P.]]
[[Category: Kloer, D P.]]
[[Category: Ruch, S.]]
[[Category: Ruch, S.]]
[[Category: Schulz, G.E.]]
[[Category: Schulz, G E.]]
[[Category: C8E]]
[[Category: C8E]]
[[Category: GOL]]
[[Category: GOL]]
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[[Category: retinal formation]]
[[Category: retinal formation]]


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